SFI SYSTEM(w/ Canister Pump Module) EVAP System

DTC Code	DTC Name
	EVAP System

RELATED DTCS


DTC No.	Monitoring Item	Link
P043E	Reference orifice clogged (built into canister pump module)	Click here
P043F	Reference orifice high-flow (built into canister pump module)	Click here
P0441	Purge VSV (Vacuum Switching Valve) stuck closed Purge VSV stuck open Purge flow	Click here
P0451	Canister pressure sensor (built into canister pump module) signal noise Canister pressure sensor (built into canister pump module) signal becomes fixed/flat	Click here
P0452	Canister pressure sensor (built into canister pump module) voltage low
P0453	Canister pressure sensor (built into canister pump module) voltage high
P0455	EVAP gross leak	Click here
P0456	EVAP small leak	Click here
P2401	Leak detection pump stuck off (built into canister pump module)	Click here
P2402	Leak detection pump stuck on (built into canister pump module)
P2419	Vent valve stuck closed (built into canister pump module)
P2420	Vent valve stuck open (vent) (built into canister pump module)	Click here
P2610	Soak timer (built into ECM)	Click here

If any EVAP system DTCs are output, the malfunctioning area can be determined using the table below.

Note:

If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P0441, P0455, P0456, P2401, P2420) will all be stored.

DESCRIPTION

*1	Purge VSV	*2	Fuel Vapor Feed Hose (EVAP Hose) (to Intake Manifold)
*3	Fuel Vapor Feed Hose (EVAP Hose) (from Canister)	*4	Canister Pump Module - Canister Pressure Sensor - Leak Detection Pump - Vent Valve
*5	Charcoal Canister Assembly	*6	Canister Filter
*7	Air Inlet Port	*8	Fuel Tank Cap
*9	Fuel Tank	-	-
*a	Location of EVAP (Evaporative Emission) System	*b	Purge Line

Tip:

The canister pressure sensor, the leak detection pump and the vent valve are built into the canister pump module.

*1	Canister Pump Module	*2	Intake Manifold
*3	Purge VSV	*4	Throttle Valve
*5	Charcoal Canister Assembly	*6	Cut-off Valve
*7	Fuel Tank	*8	Air Cleaner
*9	ECM	*10	Canister Filter
*11	Soak Timer	*12	Roll-Over Valve
*13	Fuel Tank Cap	-	-
*a	EVAP System Circuit	-	-

Note:

In the EVAP system of this vehicle, turning on the vent valve does not seal off the EVAP system. To check for leaks in the EVAP system, disconnect the air inlet vent hose and apply pressure from the atmospheric side of the canister.

While the engine is running, if a predetermined condition (closed-loop, etc.) is met, the purge VSV is opened by the ECM and fuel vapors stored in the canister are purged to the intake manifold. The ECM changes the duty cycle ratio of the purge VSV to control purge flow volume.

The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is allowed into the canister through the vent valve to ensure that the purge flow is maintained when negative pressure (vacuum) is applied to the canister.

The following two monitors run to confirm appropriate EVAP system operation.

Key-off monitor
This monitor checks for EVAP (evaporative emission) system leaks and canister pump module malfunctions. The monitor starts 5 hours* after the engine switch is turned off. At least 5 hours are required for the fuel to cool down to stabilize the EVAP pressure, thus making the EVAP system monitor more accurate.
The leak detection pump creates negative pressure (vacuum) in the EVAP system and the pressure is measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the canister pump module and purge VSV based on the EVAP pressure.

Tip:
*: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the engine switch is turned off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the engine switch is turned off, the monitor check starts 2.5 hours later.
Purge flow monitor
The purge flow monitor consists of the 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary.
- The 1st monitor
  While the engine is running and the purge VSV (Vacuum Switching Valve) is on (open), the ECM monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not created, the ECM begins the 2nd monitor.
- The 2nd monitor
  The vent valve is turned on (closed) and the EVAP pressure is then measured. If the variation in the pressure is less than 0.4 kPa(gauge) [3 mmHg(gauge)], the ECM interprets this as the purge VSV being stuck closed, illuminates the MIL and stores DTC P0441 (2 trip detection logic).

Atmospheric pressure check:
- In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before and after of the purge flow monitor, is measured by the ECM.

*1	Charcoal Canister Assembly	*2	to Intake Manifold
*3	ECM	*4	Soak Timer
*5	Purge VSV (On)	*6	Fuel Tank Cap
*7	Canister Filter	*8	Fuel Tank
*9	Leak Detection Pump (Off)	*10	Canister Pressure Sensor
*11	Reference Orifice (0.02 inches)	*12	Vent Valve (Off)
*13	Canister Pump Module	-	-
*a	EVAP Purge Flow	-	-


Component	Operation
Charcoal Canister Assembly	Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank.
Cut-off valve	Located in fuel tank. Valve floats and closes when fuel tank is 100% full.
Purge VSV (Vacuum Switching Valve)	Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge VSV. EVAP discharge volume to intake manifold controlled by purge VSV duty cycle (current-carrying time). (Open: on, Close: off)
Roll-over valve	Located in fuel tank. Valve closes by its own weight when vehicle overturns to prevent fuel from spilling out.
Soak timer	Built into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/-15 min) after engine switch is turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates (refer to fig. 3).
Canister pump module	Consists of (a) to (d) below. Canister pump module cannot be disassembled.
(a) Vent valve	Vents and closes EVAP system. When ECM turns valve on, EVAP system is closed. When ECM turns valve off, EVAP system is vented. Negative pressure (vacuum) is created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closing it) and operating leak detection pump (refer to fig. 1).
(b) Canister pressure sensor	Indicates pressure as voltages. ECM supplies regulated 5 V to pressure sensor, and uses feedback from sensor to monitor EVAP system pressure (refer to fig. 2).
(c) Leak detection pump	Creates negative pressure (vacuum) in EVAP system for leak check.
(d) Reference orifice	Has opening with 0.02 inch diameter. Vacuum is produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure is used when checking for small EVAP leaks.

*1	Canister	*2	Reference Orifice (0.02 Inch)
*3	Canister Pressure Sensor	-	-
*a	Canister Pump Module (fig. 1)	*b	Airflow
*c	Condition: Purge Flow	*d	Condition: Leak Check
*e	Vent Valve: Off (vent)	*f	to Canister Filter (Atmosphere)
*g	Leak Detection Pump: Off	*h	Vent Valve: On (closed)
*i	Leak Detection Pump: On	-	-

WIRING DIAGRAM

Refer to DTC P0451.

Click here

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.
The GTS is required to conduct the following diagnostic troubleshooting procedure.

Tip:

Using the GTS monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

CONFIRMATION DRIVING PATTERN

Tip:

After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor Confirmation described below.

KEY-OFF MONITOR CONFIRMATION
1. Preconditions
  The monitor will not run unless:
  - The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).
  - The fuel tank is less than 90% full.
  - The altitude is less than 2400 m (7875 ft.).
  - The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
  - The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
  - The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]).
2. Monitor Conditions
  1. Allow the engine to idle for at least 5 minutes.
  2. Turn the engine switch off and wait for 6 hours (8 or 10.5 hours).
    
    Tip:
    Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated.
3. Monitor Status
  1. Connect the GTS to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the GTS on.
  4. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor.
  5. Check the Monitor Status displayed on the GTS.
    
    Tip:
    If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.
PURGE FLOW MONITOR CONFIRMATION (P0441)

Tip:
Perform this monitor confirmation after the Key-Off Monitor Confirmation shows Complete.
1. Preconditions
  The monitor will not run unless:
  - The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).
  - The engine coolant temperature is 4.4°C (40°F) or higher.
  - The intake air temperature is 4.4°C (40°F) or higher.
2. Monitor Conditions
  1. Release the pressure from the fuel tank by removing and reinstalling the fuel tank cap.
  2. Warm the engine up until the engine coolant temperature reaches higher than 75°C (167°F).
  3. Increase the engine speed to 3000 rpm once.
  4. Allow the engine to idle and turn the A/C switch on for 1 minute.
3. Monitor Status
  1. Turn the engine switch off (if on (IG) or if the engine is running).
  2. Connect the GTS to the DLC3.
  3. Turn the engine switch on (IG).
  4. Turn the GTS on.
  5. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor.
  6. Check the Monitor Status displayed on the GTS.
    
    Tip:
    If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

PROCEDURE

CONFIRM DTC

Turn the engine switch off and wait for 10 seconds.
Turn the engine switch on (IG).
Turn the engine switch off and wait for 10 seconds.
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Confirm DTCs and freeze frame data. If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below.

Powertrain > Engine and ECT > Trouble Codes

Note:
If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

NOTICE:
The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
Do not run the engine during this operation.
When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs

Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

Powertrain > Engine and ECT > Utility


Tester Display
Evaporative System Check

After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

Tip:
If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.

Powertrain > Engine and ECT > Trouble Codes

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (MANUAL MODE)

NOTICE:
In the Evaporative System Check (Manual Mode), the series of 6 Evaporative System Check steps are performed manually using the GTS.
Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
Do not run the engine during this operation.
When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Click here
Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (STEP 1/6)

Check the EVAP pressure in step 1/6.

Result


DTC*1	Result	Suspected Trouble Area	Proceed to
-	Virtually no variation in EVAP pressure	Not yet determined	A
P0451	EVAP pressure fluctuates by +/-0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher	Canister pressure sensor signal noise	B
(P0452 or P0453)*2	EVAP pressure is below 42.11 kPa(abs) [315.867 mmHg(abs)], or higher than 123.761 kPa(abs) [928.331 mmHg(abs)] EVAP pressure deviates +/-10 kPa(gauge) [+/-75 mmHg(gauge)] from actual atmosphere pressure *3	Canister pressure sensor or its circuit has malfunction	C

*1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
*2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the engine switch is turned on (IG).

Tip:

*3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [525 to 825 mmHg(abs)]. This varies by weather.

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT)Click here

PERFORM EVAP SYSTEM CHECK (STEP 1/6 TO 2/6)

Check the EVAP pressure in steps 1/6 and 2/6.

Result


DTC*	Result	Suspected Trouble Area	Proceed to
-	Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure	Not yet determined	A
P2402	Small difference between EVAP pressures during steps 1/6 and 2/6	Leak detection pump stuck ON	B

*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

Tip:

The first reference pressure is the value determined in step 2/6.

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)Click here

PERFORM EVAP SYSTEM CHECK (STEP 2/6)

Tip:

Make a note of the pressures checked in inspection items (A) and (B) below.

Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A).
*1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts.
Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B).

Result


DTC*2	Result	Suspected Trouble Area	Proceed to
-	EVAP pressure in inspection item (B) is between -4.85 kPa(gauge) and -1.057 kPa(gauge) [-36.38 mmHg(gauge) and -7.929 mmHg(gauge)]	Not yet determined	A
P043F and P2401	EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.929 mmHg(gauge)] or higher	Reference orifice high-flow Leak detection pump stuck OFF	B
P043E	EVAP pressure in inspection item (B) is below -4.85 kPa(gauge) [-36.38 mmHg(gauge)]	Reference orifice clogged	C
P2419	EVAP pressure in inspection item (A) is higher than -0.25 kPa(gauge) [-1.875 mmHg(gauge)]	Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit)	D

*2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

PERFORM EVAP SYSTEM CHECK (STEP 3/6)Click here

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)Click here

PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6)

Check the EVAP pressure in step 3/6.

Result


DTC*	Result	Suspected Trouble Area	Proceed to
-	EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher within 10 seconds of proceeding from step 2/6 to step 3/6	Not yet determined	A
P2420	No variation in EVAP pressure even after proceeding from step 2/6 to step 3/6	Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged	B
P0451	No variation in EVAP pressure during steps 1/6 through 3/6	Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit)	C

*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)Click here

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)Click here

PERFORM EVAP SYSTEM CHECK (STEP 3/6)

Wait until the EVAP pressure change is less than 0.12 kPa(gauge) [0.9 mmHg(gauge)] for 40 seconds.
Measure the EVAP pressure and record it.

Tip:
A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (STEP 4/6)

Check the EVAP pressure in step 4/6.

Result


DTC*1	Result	Suspected Trouble Area	Proceed to
-	EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher within 10 seconds of proceeding from step 3/6 to step 4/6	Not yet determined	A
P0441*2	EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher more within 10 seconds of proceeding from step 3/6 to step 4/6	Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM	B
P0441	Variation in EVAP pressure is less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] for 10 seconds, after proceeding from step 3/6 to step 4/6	Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM	C

*1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
*2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values.

INSPECT EVAP HOSE (PURGE VSV - CANISTER)Click here

PERFORM ACTIVE TEST USING GTS (PURGE VSV)Click here

PERFORM EVAP SYSTEM CHECK (STEP 5/6)

Check the EVAP pressure in step 5/6.
Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6).

Result


DTC*	Result	Suspected Trouble Area	Proceed to
-	EVAP pressure from step 3/6 lower than second reference pressure (step 5/6)	Not yet determined (no leakage from EVAP system)	A
P0441 and P0455	EVAP pressure from step 3/6 higher than [second reference pressure (step 5/6) x 0.2]	Purge VSV stuck open EVAP gross leak	B
P0456	EVAP pressure from step 3/6 higher than second reference pressure (step 5/6)	EVAP small leak	B

*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

PERFORM ACTIVE TEST USING GTS (PURGE VSV)Click here

REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS

Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

PERFORM ACTIVE TEST USING GTS (PURGE VSV)

Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.

Powertrain > Engine and ECT > Active Test


Tester Display
Activate the VSV for Evap Control

*1	Purge VSV
*2	Fuel Vapor Feed Hose (to Canister)

Disconnect the fuel vapor feed hose (connected to the canister) from the purge VSV.

Start the engine.
Using the GTS, turn off the purge VSV (Activate the VSV for Evap Control: OFF).
Use your finger to confirm that the purge VSV has no suction.
Using the GTS, turn on the purge VSV (Activate the VSV for Evap Control: ON).
Use your finger to confirm that the purge VSV has suction.

Result


Test Result	Suspected Trouble Area	Proceed to
No suction when purge VSV turned off, and suction applied when turned on	Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM	A
	Leakage is considered (based on result of step 10): Fuel tank cap Leakage from EVAP line, fuel tank, or canister	B
Suction applied when purge VSV turned off	Purge VSV stuck open	C
No suction when purge VSV turned on	Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold	D

CHECK FUEL TANK CAP ASSEMBLYClick here

INSPECT PURGE VSVClick here

CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)Click here

INSPECT EVAP HOSE (PURGE VSV - CANISTER)

Check for blockages in the EVAP purge line between the purge VSV and canister.

OK

No blockages in the EVAP purge line between the purge VSV and canister.

Result


Proceed to
OK
NG

REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER)Click here

INSPECT CHARCOAL CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CANISTER)

Check for filter blockage in the canister.
Click here

OK

No blockages in the canister.

Result


Proceed to
OK
NG

REPLACE ECMClick here

REPLACE CHARCOAL CANISTER ASSEMBLY

Replace the charcoal canister assembly.

Click here

Note:

When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose.
Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.

*1	Fuel Tank Vent Hose	*2	Vent Hose
*3	Air Inlet Port	*4	Fuel Tank
*5	Canister Pump Module	*6	Canister Assembly
*7	Fuel Tank Inlet Pipe Sub-assembly (Canister Filter)	*8	Fuel Tank Cap Assembly
*a	Inspection Area (check for disconnection and/or cracks)	-	-

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER)

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

CHECK FUEL TANK CAP ASSEMBLY

Check that the fuel tank cap is correctly installed and confirm that the fuel tank cap meets OEM specifications.
Tighten the fuel tank cap firmly (only one click sound could be heard).

Tip:
If an EVAP tester is available, check the fuel tank cap using the tester.
1. Remove the fuel tank cap and install it onto a fuel tank cap adapter.
2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump.
3. Seal the adapter and wait for 2 minutes.
4. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or higher, the fuel tank cap is normal.

Result


Test Result	Suspected Trouble Area	Proceed to
Fuel tank cap correctly installed	-	A
Fuel tank cap loose	Fuel tank cap improperly installed Defective fuel tank cap Fuel tank cap does not meet OEM specifications	B
Defective fuel tank cap	-	B
No fuel tank cap	-	C

CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLYClick here

REPLACE FUEL TANK CAP ASSEMBLYClick here

LOCATE EVAP LEAK PART

Disconnect the vent hose.

*1	Fuel Tank Vent Hose	*2	Vent Hose
*3	Air Inlet Port	*4	Fuel Tank
*5	Canister Pump Module	*6	Canister Assembly
*7	Fuel Tank Inlet Pipe Sub-assembly (Canister Filter)	*8	Fuel Tank Cap Assembly
*a	Inspection Area (check for disconnection and/or cracks)	-	-

Connect the EVAP pressure tester tool to the canister pump module with the adapter.

Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)].
Apply soapy water to the piping and connecting parts of the EVAP system.
Look for areas where bubbles appear. This indicates the leak point.
Repair or replace the leak point.

Tip:
Disconnect the hose between the canister and fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY

Tip:

When reinstalling the fuel tank cap, tighten it firmly (only one click sound could be heard).
When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and install it firmly.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

REPLACE FUEL TANK CAP ASSEMBLY

Tip:

When installing the fuel tank cap, tighten it firmly (only one click sound could be heard).

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

INSPECT PURGE VSV

Turn the engine switch off.

Disconnect the purge VSV connector.

Disconnect the fuel vapor feed hose (connected to the canister) from the purge VSV.
Start the engine.
Use your finger to confirm that the purge VSV has no suction.

Result


Test Result	Suspected Trouble Area	Proceed to
No suction	Wire harness or connector between purge VSV and ECM ECM	A
Suction applied	Purge VSV	B

CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)Click here

REPLACE PURGE VSVClick here

INSPECT EVAP HOSE (PURGE VSV - CANISTER)

Check for blockages in the EVAP purge line between the purge VSV and canister.

OK

No blockages in the EVAP purge line between the purge VSV and canister.

Result


Proceed to
OK
NG

REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER)Click here

CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)

Disconnect the fuel vapor feed hose (connected to the intake manifold) from the purge VSV.

Start the engine.
Use your finger to confirm that the fuel vapor feed hose has suction.

Result


Test Result	Suspected Trouble Area	Proceed to
Suction applied	EVAP hose between purge VSV and intake manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM	A
No suction	Intake manifold port EVAP hose between purge VSV and intake manifold	B

INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)Click here

INSPECT PURGE VSV

Remove the purge VSV.

Apply battery voltage to the terminals of the purge VSV.

Confirm that air flows from port E to port F.

Result


Test Result	Condition	Suspected Trouble Area	Proceed to
Air flows	Battery voltage is applied to purge VSV terminals	Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM	A
No air flow	Battery voltage is applied to purge VSV terminals	Purge VSV	B

REPLACE PURGE VSVClick here

CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV)

Disconnect the purge VSV connector.

Turn the engine switch on (IG).

Measure the voltage according to the value(s) in the table below.

Result


Tester Connection	Switch Condition	Specified Condition	Suspected Trouble Area	Proceed to
B2-1 - Body ground	Engine switch on (IG)	11 to 14 V	Purge VSV power source normal Wire harness or connector between purge VSV and ECM	A
B2-1 - Body ground	Engine switch on (IG)	Other than result above	Wire harness or connectors between purge VSV and battery	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

Disconnect the ECM connector.
Disconnect the purge VSV connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance


Tester Connection	Condition	Specified Condition
B2-2 - B77-68 (PRG)	Always	Below 1 Ω
B2-2 or B77-68 (PRG) - Body ground	Always	10 kΩ or higher

Result


Proceed to
OK
NG

REPLACE ECMClick here

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

REPLACE PURGE VSV

Replace the purge VSV.
Click here

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)

Stop the engine.
Disconnect the EVAP hose from the intake manifold.
Start the engine.
Use your finger to confirm that the port of the intake manifold has suction.

Result


Tester Connection	Suspected Trouble Area	Proceed to
Suction applied	EVAP hose between intake manifold and purge VSV	A
No suction	Intake manifold (upper intake manifold)	B

INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)Click here

REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV)

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)

Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.
Click here

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)

Turn the engine switch off.

Disconnect the canister pump module connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.

Result


Tester Connection	Switch Condition	Specified Condition	Suspected Trouble Area	Proceed to
V3-5 (VLVB) - Body ground	Engine switch on (IG)	11 to 14 V	Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM	A
V3-5 (VLVB) - Body ground	Engine switch on (IG)	Below 3 V	Power source wire harness of vent valve	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

Turn the engine switch off.

Disconnect the canister pump module connector.

Apply the battery voltage to terminals VLVB and VGND of the pump module.
Touch the canister pump module to confirm the vent valve operation.

Result


Condition	Tester Result	Suspected Trouble Area	Proceed to
Apply battery voltage to terminals VLVB and VGND	Operating	Wire harness or connector between vent valve and ECM Canister (charcoal filter inside canister) clogged ECM	A
Apply battery voltage to terminals VLVB and VGND	Not operating	Vent valve	B

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)

Turn the engine switch off.
Disconnect the ECM connector.
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.

Result


Tester Connection	Condition	Test Result	Suspected Trouble Area	Proceed to
A62-7 (VPMP) - V3-1 (VGND)	Always	Below 1 Ω	Canister (charcoal filter inside canister) clogged ECM	A
A62-7 (VPMP) - V3-1 (VGND)	Always	10 kΩ or higher	Wire harness or connector between ECM and canister pump module	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

INSPECT CHARCOAL CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CANISTER)

Check for filter blockage in the canister.
Click here

OK

No blockages in the canister.

Result


Proceed to
OK
NG

REPLACE ECMClick here

REPLACE CHARCOAL CANISTER ASSEMBLYClick here

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)

Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.

Result


Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
V3-4 (MGND) - Body ground	Always	Below 1 Ω	Canister pump module Wire harness or connector between canister pump module and ECM ECM	A
V3-4 (MGND) - Body ground	Always	10 kΩ or higher	Wire harness or connector between canister pump module and body ground	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

Disconnect the canister pump module connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.

Result


Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
A62-19 (MPMP) - V3-3 (MTRB)	Always	Below 1 Ω	Canister pump module ECM	A
A62-19 (MPMP) - V3-3 (MTRB)	Always	10 kΩ or higher	Wire harness or connector between ECM and canister pump module	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)

Replace the canister pump module.

Click here

Note:

When replacing the canister pump module, check the canister pump module interior, canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. If liquids are present in the canister interior, replace canister and canister pump module together.
Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace the canister and canister pump module together.
Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

Note:

The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
Do not run the engine in this step.
When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Click here

Powertrain > Engine and ECT > Clear DTCs

Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

Powertrain > Engine and ECT > Utility


Tester Display
Evaporative System Check

After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

Result


Result	Proceed to
EVAP system DTCs are output	A
No DTCs output (No pending DTCs output)	B

REPLACE ECMClick here

END

PERFORM EVAP SYSTEM CHECK (STEP 3/6)

Check the EVAP pressure in step 3/6.

Result


DTC*	Result	Suspected Trouble Area	Proceed to
P043F	EVAP pressure less than [reference pressure] measured in step 2/6	Reference orifice high-flow	A
P2401	EVAP pressure almost same as [reference pressure] measured in step 2/6	Leak detection pump stuck off	B

*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

Tip:

The first reference pressure is the value determined in step 2/6.

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)Click here

INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

Turn the engine switch off.

Disconnect the canister pump module connector.

Apply the battery voltage to terminals VLVB and VGND of the pump module.
Touch the canister pump module to confirm the vent valve operation.

Result


Condition	Test Result	Suspected Trouble Area	Proceed to
Apply battery voltage to terminals VLVB and VGND	Operating	Wire harness or connector between vent valve and ECM Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM	A
Apply battery voltage to terminals VLVB and VGND	Not operating	Vent valve	B

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)

Turn the engine switch off.
Disconnect the ECM connector.
Disconnect the canister pump module connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance


Tester Connection	Condition	Specified Condition
A62-7 (VPMP) - V3-1 (VGND)	Always	Below 1 Ω
A62-7 (VPMP) or V3-1 (VGND) - Body ground	Always	10 kΩ or higher

Result


Result	Suspected Trouble Area	Proceed to
OK	Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM	A
NG	Wire harness or connector between ECM and canister pump module	B

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)Click here

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)

Turn the engine switch off.

Disconnect the canister pump module connector.

Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.

Result


Tester Connection	Condition	Test Result	Suspected Trouble Area	Proceed to
V3-3 (MTRB) - Body ground	Engine switch on (IG)	9 to 14 V	Wire harness or connector between leak detection pump and body ground Leak detection pump	A
V3-3 (MTRB) - Body ground	Engine switch on (IG)	Below 3 V	Wire harness or connector between leak detection pump and ECM ECM	B

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)Click here

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)

Turn the engine switch off.
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.

Result


Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
V3-4 (MGND) - Body ground	Always	Below 1 Ω	Leak detection pump	A
V3-4 (MGND) - Body ground	Always	10 kΩ or higher	Wire harness or connector between canister pump module and body ground	B

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

Turn the engine switch off.
Disconnect the canister pump module connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance


Tester Connection	Condition	Specified Condition
A62-19 (MPMP) - V3-3 (MTRB)	Always	Below 1 Ω
A62-19 (MPMP) or V3-3 (MTRB) - Body ground	Always	10 kΩ or higher

Result


Result	Suspected Trouble Area	Proceed to
OK	ECM	A
NG	Wire harness or connector between ECM and canister pump module	B

REPAIR OR REPLACE HARNESS OR CONNECTORClick here

REPLACE ECM

Replace the ECM.
Click here

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

REPLACE CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY (CANISTER PUMP MODULE)

Replace the canister pump module.

Click here

Note:

When replacing the canister pump module, check the canister pump module interior, canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. If liquids are present in the canister interior, replace canister and canister pump module together.
Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace the canister and canister pump module together.
Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)

Note:

The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
Do not run the engine in this step.
When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Click here

Powertrain > Engine and ECT > Clear DTCs

Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.

Powertrain > Engine and ECT > Utility


Tester Display
Evaporative System Check

After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

Tip:
If no pending DTCs are found, the repair has been successfully completed.

Result


Proceed to
NEXT

END

INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT)

Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit procedure.
Click here

Result


Proceed to
NEXT

PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE)Click here

*1	Canister Pump Module	*2	EVAP Pressure Tester Tool
*3	Adapter	-	-