SFI SYSTEM(w/ EGR System), Diagnostic DTC:P0107 and P0108

DTC Code	DTC Name
P0107	Manifold Absolute Pressure / Barometric Pressure Circuit Low Input
P0108	Manifold Absolute Pressure / Barometric Pressure Circuit High Input

DESCRIPTION

The manifold absolute pressure sensor detects the intake manifold pressure as a voltage using a built-in sensor unit.


DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
P0107	Manifold Absolute Pressure / Barometric Pressure Circuit Low Input	The manifold absolute pressure sensor voltage is below 0.5 V for 0.5 seconds (1 trip detection logic).	Open or short in manifold absolute pressure sensor circuit Manifold absolute pressure sensor ECM	Comes on	DTC stored
P0108	Manifold Absolute Pressure / Barometric Pressure Circuit High Input	The manifold absolute pressure sensor voltage is higher than 4.5 V for 0.5 seconds (1 trip detection logic).	Open or short in manifold absolute pressure sensor circuit Manifold absolute pressure sensor ECM	Comes on	DTC stored

Tip:

When either of these DTCs is output, check the manifold absolute pressure using the intelligent tester. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.


MAP	Malfunction
Approximately 0 kPa	Short in PIM circuit to ground Short in PIM circuit to E2 circuit
130 kPa or higher	Open in VC circuit or short in VC circuit to PIM circuit Open in PIM circuit Open in E2 circuit

MONITOR DESCRIPTION

The ECM monitors the sensor voltage and uses this value to calculate the manifold absolute pressure. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the manifold pressure sensor and stores a DTC.

Example:

When the sensor output voltage remains below 0.5 V, or higher than 4.5 V for more than 0.5 seconds, the ECM stores a DTC.

If the malfunction is not repaired successfully, a DTC is stored 0.5 seconds after the engine is next started.

MONITOR STRATEGY


Frequency of Operation	Continuous

CONFIRMATION DRIVING PATTERN

Turn the engine switch on (IG) and wait for 5 seconds or more.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Tip:

If other DTCs related to different systems that have terminal E2 as the ground terminal are stored simultaneously, there may be an open circuit between terminal E2 and body ground.
Read freeze frame data using the intelligent tester. 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.

PROCEDURE

READ VALUE USING INTELLIGENT TESTER (MAP)

Connect the intelligent tester to the DLC3.
Start the engine.
Turn the tester on.

Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.

Powertrain > Engine and ECT > Data List


Tester Display
MAP

Read the MAP value.

OK

Same value as the actual atmospheric pressure.

Tip:

Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather (high atmospheric pressure, low atmospheric pressure).
Also, check "Atmosphere Pressure" in the Data List.

Result


Result
OK
NG

OK

CHECK FOR INTERMITTENT PROBLEMS

Click here

NG

CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR (TERMINAL VOLTAGE)

*1	Front view of wire harness connector (to Manifold Absolute Pressure Sensor)

Disconnect the manifold absolute pressure sensor connector.

Turn the engine switch on (IG).

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

Standard Voltage


Tester Connection	Switch Condition	Specified Condition
C44-3 (VC) - C44-2 (E2)	Engine switch on (IG)	4.5 to 5.5 V
C44-1 (PIM) - C44-2 (E2)	Engine switch on (IG)	4.0 to 5.0 V

Result


Result
OK
NG

NG

CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)Click here

OK

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

Replace the manifold absolute pressure sensor.

Click here

Result


Result
NEXT

Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG) and turn the tester on.
Clear the DTCs.
Click here

Powertrain > Engine and ECT > Clear DTCs
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and wait for 5 seconds.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / DTC.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes

Result


Result	Proceed to
Display (DTC output)	A
DTC P0107 and/or P0108 output	B

A

END

B

REPLACE ECM

Click here

CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

Disconnect the manifold absolute pressure sensor connector.
Disconnect the ECM connector.

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

Standard Resistance (Check for open)


Tester Connection	Condition	Specified Condition
C44-1 (PIM) - C29-8 (PIM)	Always	Below 1 Ω
C44-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
C44-2 (E2) - C29-7 (E2)	Always	Below 1 Ω

Standard Resistance (Check for short)


Tester Connection	Condition	Specified Condition
C44-1 (PIM) or C29-8 (PIM) - Body ground	Always	10 kΩ or higher
C44-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

Result


Result
OK
NG

OK

REPLACE ECM

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR