ECD SYSTEM(w/ Gear Shift Indicator) DATA LIST / ACTIVE TEST

Load calculated by ECM/

Min.: 0%, Max.: 100%

• Idling: 7 to 26%

• Running without load (2500 rpm): 10 to 20%

Diagnostic Note:

Calculated load = (Final injection volume / max. injection volume at current engine speed) x 100.

Air flow rate from mass air flow meter/

Min.: 0 gm/s, Max.: 655.35 gm/s

• Idling: 3 to 12 gm/s

• Running without load (2000 rpm): 17 to 130 gm/s

• Mass air flow meter

• Mass air flow meter circuit

• Intake related clog or leak

• Exhaust related clog

• Turbocharger sub-assembly

• Leak or clog in passages for turbocharger

• Malfunction in which EGR valve does not close

Symptoms when out of range:

Rough idling

Diagnostic Note:

• Based on the MAF, the ECM controls the fuel injection volume, injection timing, EGR, etc.

• If the value is always approximately 0 gm/s:




• Mass air flow meter power source circuit is open.

• VG circuit is open or shorted.

• EVG circuit is open.

Engine speed/

Min.: 0 rpm, Max.: 16383 rpm

• 50 to 400 rpm: Cranking

• 720 to 820 rpm: Idling with warm engine

• Crankshaft position sensor

• Crankshaft position sensor circuit

Diagnostic Note:

When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 or varies greatly from the actual engine speed.

Target Idling Engine Speed/

Min.: 0 rpm, Max.: 10000 rpm

Absolute pressure inside intake manifold/

Min.: 0 kPa, Max.: 255 kPa

• Idling: 90 to 103 kPa (depends on barometric pressure and amount of EGR)

• Engine running at 3000 rpm: 100 to 150 kPa

• Manifold absolute pressure sensor

• Intake related clog or leak

• Exhaust related clog

• Turbocharger sub-assembly

• Leak or clog in passages for turbocharger

• EGR valve stuck open

• Exhaust leak

• Throttle valve stuck closed

Symptoms when out of range:

Lack of power

Diagnostic Note:

• When the ignition switch is ON or the vehicle is idling, the intake manifold absolute pressure and atmospheric pressure are approximately the same (standard atmospheric pressure = 101 kPa).

  Above approximately 1500 rpm, the turbo becomes effective and the pressure becomes higher than atmospheric pressure.

• Inspect while comparing with "Target Booster Pressure".

• With the accelerator fully open, if the actual manifold absolute pressure (MAP) is low compared to the target booster pressure by at least 20 kPa for 5 seconds or more, a feeling of insufficient power will occur.

Vehicle speed/

Min.: 0 km/h, Max.: 255 km/h

• Speed sensor

• Speed sensor circuit

Engine coolant temperature/

Min.: -40°C, Max.: 140°C

• Engine coolant temperature sensor

• Thermostat

Symptoms when out of range:

Difficulty starting when engine is cold, rough idle, black smoke, lack of power

Diagnostic Note:

• If the value is -40°C (-40°F) or 140°C (284°F), the sensor circuit is open or shorted.

• After a long soak, the coolant temperature, intake air temperature and ambient temperature are approximately equal.

Intake air temperature/

Min.: -40°C, Max.: 140°C

Diagnostic Note:

• After a long soak, the engine coolant temperature, intake air temperature and ambient temperature are approximately equal.

• If the value is -40°C (-40°F) or 140°C (284°F), the sensor circuit is open or shorted.

Initial engine coolant temperature/

Min.: -40°C, Max.: 120°C

Diagnostic Note:

For freeze frame data, this tells whether the malfunction happened at a cold start or with a warm engine.

Initial intake air temperature/

Min.: -40°C, Max.: 120°C

Intake air temperature after intercooler/

Min.: -40°C, Max.: 190°C

Diagnostic Note:

• This is the intake air temperature at the intake manifold (after the intercooler).

• During fail-safe operation, the value is set to 165°C (329°F). As the value is set to a high temperature, the turbo pressure may be suppressed and there may be a lack of power.

Pre-glow operation/

ON or OFF

Diagnostic Note:

This is the ECM command.

After-glow operation/

ON or OFF

Diagnostic Note:

This is the ECM command.

Alternator generation duty ratio/

Min.: 0%, Max.: 100%

• No electrical load at idling:

  0 to 60%

• High electrical load at idling:

  100%

• Battery deterioration

• Alternator malfunction

• Electric load, lights, etc.

Diagnostic Note:

• This is outputs the alternator generation duty and is used to determine the electrical load.

• Can be used to determine whether a higher-than-normal injection volume at idle, etc. is due to electrical loading or from some other source. For example, when the duty is not high but the idling injection volume is high, there is injector volume degradation or high engine friction.

• Can be used for judging whether or not a malfunctioning component in the electrical system is generating continual generation requests (e.g., battery deterioration is causing an unending full recharge request, etc.). Regardless of whether or not an auxiliary device like the A/C or heater is active, if the alternator duty is always at the maximum value, there is an electrical system abnormality, like battery deterioration.

Starter signal/

ON or OFF

• OFF malfunction (ignition switch (STA) is ON but the signal is OFF and the starter is operating): Wire harness is open or shorted to ground

• ON malfunction (ignition switch (STA) is off but the signal is ON and the starter is not operating): Wire harness is shorted to +B

• Operation malfunction: ignition switch malfunction, starter relay malfunction, starter malfunction, battery or battery cable is defective, or wire harness is open or shorted

Symptoms when out of range:

• Ignition switch is ON but the starter does not operate: Starting is not possible

• Ignition switch is off but the starter continues to operate: STA signal malfunction (P0617) is stored

Diagnostic Note:

Ignition switch (STA) output:

• ON: Starter is operating

• OFF: Starter is not operating

A/C (Air Conditioner) signal/

ON or OFF

A/C operation signal output from A/C amplifier

• ON: Operating

• OFF: Not operating

• A/C switch

• A/C amplifier

• A/C system malfunction, wire harness between A/C amplifier and ECU open or shorted

Symptoms when out of range:

OFF malfunction (OFF even when A/C switch is turned on):

• Engine speed decreases temporarily when the A/C is operating.

Stop light switch/

ON or OFF

• ON: Brake pedal depressed

• OFF: Brake pedal released

• OFF malfunction: Wire harness (stop light switch to ECM, stop light switch to +B) open or shorted to ground

• ON malfunction: Wire harness (stop light switch to ECM) shorted to +B

• Stop light switch

Symptoms when out of range:

Stop light switch malfunction DTC P0504 is stored

Diagnostic Note:

Stop light switch (STP) operation condition:

• ON: Light is on (Brake pedal is depressed)

• OFF: Light is off (Brake pedal is released)

Status of the Shift Indication Enable/

ON or OFF

Immobiliser communication/

ON or OFF

• ON: Normal

• OFF: Engine cannot be started due to immobiliser communication malfunction

• Use of a non-registered key

• Key battery is fully depleted

Neutral position switch status/

ON or OFF

Clutch switch/

ON or OFF

Symptoms when out of range:

The cruise control, pilot quantity learning, etc. may not function properly or may not function at all.

Diagnostic Note:

When this item displays "OFF" with the clutch pedal depressed, the shock when accelerating and decelerating the vehicle becomes larger and pilot quality learning cannot be performed.

Battery voltage/

Min.: 0 V, Max.: 65.15 V

Symptoms when out of range:

If 5 V or less, starting becomes difficult

Diagnostic Note:

If 11 V or less, characteristics of some electrical components change.

Atmospheric pressure value/

Min.: 0 kPa, Max.: 255 kPa

Diagnostic Note:

• With the ignition switch ON, when the difference between the atmospheric pressure sensor and intake manifold absolute pressure is 10 kPa or more, there is a malfunction in one of the sensors.

• With the ignition switch ON, when the atmospheric pressure is 0 kPa or 140 kPa, there is a malfunction in the sensor circuit.

• Standard atmospheric pressure: 101 kPa.

• For every 100 m increase in elevation, pressure drops by 1 kPa.

  This varies by weather (high atmospheric pressure, low atmospheric pressure).

TC and TE1 connection status for Active Test/

ON or OFF

Diagnostic Note:

When the "Connect the TC and TE1" Active Test is performed, the system behaves as if TC and CG were connected.

Number of codes/

Min.: 0, Max.: 255

Diagnostic Note:

Number of DTCs appearing at least once during the last 40 times the vehicle was warmed up.

Check mode/

ON or OFF

Diagnostic Note:

Check Mode: The mode in which certain DTCs can be detected more easily and with higher sensitivity.

Check mode result for vehicle speed sensor/

Compl or Incompl

Diagnostic Note:

SPD Test: Check mode result for vehicle speed sensor.

MIL status/

ON or OFF

Distance traveled with MIL on/

Min.: 0 km, Max.: 65535 km

Diagnostic Note:

• Distance traveled after a DTC is stored.

• Cleared when the cable is disconnected from the negative (-) battery terminal, or when the DTC is cleared using the intelligent tester.

Running time after MIL turns on/

Min.: 0 min., Max.: 65535 min.

Diagnostic Note:

• Engine run time since the MIL illumination.

• Cleared when the cable is disconnected from the negative (-) battery terminal, or when the DTC is cleared using the intelligent tester.

Engine run time/

Min.: 0 sec., Max.: 65535 sec.

Diagnostic Note:

Time passed since the ignition switch was turned to ON.

Time after DTC cleared/

Min.: 0 min., Max.: 65535 min.

Diagnostic Note:

Time elapsed since the DTCs were cleared (or shipment from the factory).

Distance driven after DTC cleared/

Min.: 0 km, Max.: 65535 km

Diagnostic Note:

• Distance driven since the DTCs were cleared.

• (Data List "Distance from DTC clear") - (Freeze frame data "Distance from DTC cleared") = Distance driven since the abnormality occurred.

Warmup cycles after DTC cleared/

Min.: 0, Max.: 255

Diagnostic Note:

• Number of engine warmup since DTCs were cleared.

• (Data List "Warmup Cycle Cleared DTC") - (Freeze frame data "Warmup Cycle Cleared DTC") = Warmup cycles since the abnormality occurred.

Diagnostic Note:

Euro-OBD

Complete parts monitor/

Not Avl or Avail

Engine start time/

Min.: 0 ms, Max.: 267000 ms

Diagnostic Note:

Time necessary for the engine to start.

Accelerator position status/

Min.: 0%, Max.: 99.6%

• Accelerator pedal released:

  0%

• Accelerator pedal fully depressed:

  100%

• Accelerator pedal position sensor opening position

• ECT requested opening position

• Cruise requested opening position

• VSC requested opening position

Diagnostic Note:

• "Accel Position" is the accelerator opening amount (%) for engine control use.

• When the accelerator pedal position sensor output itself (Accelerator Position 1, Accelerator Position 2) is in the normal voltage range, another actuator malfunction has caused the fail-safe function to restrict the accelerator.

• Without cruise or VSC requests, and without accelerator restriction by the fail-safe function, this is adjusted in proportion to the amount the accelerator pedal is depressed by the driver.

• Accelerator pedal released: 0%

• Accelerator pedal fully depressed: 99.6%

Accelerator position No. 1/

Min.: 0%, Max.: 100%

• Accelerator pedal released:

  10 to 22%

• Accelerator pedal fully depressed:

  52 to 90%

Diagnostic Note:

Read value with ignition switch ON (do not start engine).

Accelerator position No. 2/

Min.: 0%, Max.: 100%

• Accelerator pedal released:

  24 to 40%

• Accelerator pedal fully depressed:

  68 to 95%

Diagnostic Note:

Read value with ignition switch ON (do not start engine).

Electric fan motor/

ON or OFF

Diagnostic Note:

-

Engine speed for No. 1 cylinder/

Min.: 0 rpm, Max.: 51199 rpm

Symptoms when out of range:

When the engine speeds of all cylinders are not equal, idling will be rough.

Diagnostic Note:

• Output only when the "Check the Cylinder Compression" Active Test is performed.

• Indicates the speed of each cylinder when cranking.

  Example - Normal: Engine speeds of all cylinders are approximately equal.

  When No. 1 cylinder compression is low, "Engine Speed of Cyl #1" is approximately 300 rpm, and "Engine Speed of Cyl #2 to #4" is approximately 200 rpm.

Engine speed for No. 2 to No. 4 cylinder/

Min.: 0 rpm, Max.: 51199 rpm

Engine speed for all cylinders/

Min.: 0 rpm, Max.: 51199 rpm

Diagnostic Note:

• Output only when the Active Test "Check the Cylinder Compression" is performed.

• Indicates the average engine speed of all cylinders during cranking.

Diagnostic Note:

Identifying model code

Diagnostic Note:

Identifying engine type: 2ADFTV

Cylinder number/

Min.: 0, Max.: 255

Diagnostic Note:

Identifying cylinder number: 4

Transaxle type/

MT or ECT 6th

Diagnostic Note:

Identifying transaxle type:

• MT: Manual transaxle

• ECT 6th: Automatic transaxle

Diagnostic Note:

Identifying destination

Model year/

Min.: 1900, Max.: 2155

Diagnostic Note:

Identifying model year: 20##

Diagnostic Note:

Identifying engine type: Diesel

VN turbo type/

Not Avl, Commo, Vacuum, CAN com, DC

Diagnostic Note:

Indicates the VN turbo vane actuation method.

• DC motor system.

• Negative-pressure diaphragm system.

• Step motor system.

Target common rail pressure/

Min.: 0 kPa, Max.: 250000 kPa

Diagnostic Note:

• Inspect the (actual) fuel pressure, comparing it with the common rail target value.

• Considered normal when the actual fuel pressure is within +/-5000 kPa of the target fuel pressure under stable conditions when idling after warm up the engine.

Fuel pressure/

Min.: 0 kPa, Max.: 250000 kPa

• Fuel supply pump assembly

• High pressure pipes

• Fuel pressure sensor

• Injector assembly

• Feed pump (fuel supply pump assembly)

• Fuel filter element sub-assembly

• Pressure discharge valve

• Air in the fuel pipes

• Lack of fuel

Symptoms when out of range:

Difficult to start, poor driveability, lack of power, abnormal combustion noise

Diagnostic Note:

• Fuel Press is the actual common rail fuel pressure.

• Inspect by comparing the fuel pressure with the target fuel pressure.

• When in a stable condition such as when idling after warm up the engine, the fuel pressure is within +/-5000 kPa of the target fuel pressure.

• The ECM uses fuel pressure for feedback control of the target fuel pressure via the fuel supply pump assembly.

  The injection amount is determined based on the injection timing and fuel pressure.

  Also, the spray pattern is selected based on the fuel pressure.

• For startup, at least 25000 kPa of fuel pressure is needed (take care as there is a response lag when the pressure rises).

• When the fuel pressure is below 25000 kPa, it may cause rough idling.

• When the fuel pressure has decreased by 20000 kPa from the target fuel pressure, there may be a lack of power.

• If actual fuel pressure is 5000 kPa higher than the target fuel pressure, P1229 will be stored. When the actual fuel pressure is lower than the target fuel pressure, "P1608 Lack of Power" may be detected depending on the degree of deviation from the target pressure.

• When the fuel pressure is higher than 220000 kPa, DTC P0088 will be stored.

Fuel pressure/

Min.: 0 kPa, Max.: 250000 kPa

• Fuel supply pump assembly

• High pressure pipes

• Fuel pressure sensor

• Injector assembly

• Feed pump (fuel supply pump assembly)

• Fuel filter element sub-assembly

• Pressure discharge valve

• Air in the fuel pipes

• Lack of fuel

Symptoms when out of range:

Poor driveability, lack of power, abnormal combustion noise.

Diagnostic Note:

This is a backup output value from the fuel pressure sensor.

Final pump current target value/

Min.: 0 mA, Max.: 8191.8 mA

• Suction control valve malfunction

• Clogged fuel filter element sub-assembly

Symptoms when out of range:

Difficulty starting, lack of power or rough idling

Diagnostic Note:

• ECU-calculated value for the suction control valve actuation target current.

• Value is large when a high fuel pressure is desired.

• Normally, the value is between 800 and 2500 mA.

• If the value is stuck at 3000 mA or higher, it indicates that the operation is poor (poor movement due to deposits, etc.).

• When this deviates from the standard value, it indicates that for some reason, even though the pump is running hard, the actual fuel pressure is inconsistent with the target fuel pressure.

Pump SCV learning value/

Min.: -4096 mA, Max.: 4095.8 mA

• Min.: -100 mA

• Max.: 100 mA

• Suction control valve malfunction

• Clogged fuel filter element sub-assembly

Symptoms when out of range:

Difficulty starting, lack of power or rough idling

Diagnostic Note:

If the value is stuck at 200 mA higher or -200 mA less, it indicates that the operation is poor (poor movement due to deposits, etc.).

Idle stability status integral control volume/

Min.: -80 mm³/st, Max.: 79.99 mm³/st

-6 to 10 mm³/st

Symptoms when out of range:

Engine friction problem, compression problem or injector breakdown

Diagnostic Note:

• When the actual engine speed does not match the target idling speed, this corrects the injection volume.

  If this item displays 10 mm³/st or more or -10 mm³/st or less even with the engine completely warmed up and the air conditioning and other electrical loads off, the internal parts of the engine may be damaged, or the fuel injection system or other auxiliary components may be malfunctioning.

• Only calculated and reflected at idle.

Idle Signal Output Value/

Min.: 0, Max.: 255

• Idling: 1

• Not idling: 0

Diagnostic Note:

• Piezo injector has big operation noise when idling. To reduce the noise level, this item lowers driving energy of when idling. This item displays the value for controlling driving energy

• If the value is abnormal, DTC P1626 and P1627 will be stored.

• If the injector is not Piezo injector, the value will be always "0".

Injection volume/

Min.: 0 mm³/st, Max.: 1279.98 mm³/st

Idling: 3 to 10 mm³/st

Diagnostic Note:

• Injection amount for each combustion.

• If injector assemblies are clogged fuel quality is poor, the fuel filter element sub-assembly is clogged, or engine friction increases, "Injection Volume" will increase.

• If there is a malfunction due to low turbocharger pressure or a low intake air volume, the injection volume is limited and there is a lack of power.

Injection volume feedback learning value/

Min.: -10 mm³/st, Max.: 9.9 mm³/st

Injector Memory Error/

No Error or Error

Symptoms when out of range:

Rough idling, poor driveability, black smoke, white smoke, combustion noise

Diagnostic Note:

If the injector compensation codes are not input into the new ECM, or if an injector compensation code of a different injector model or a compensation code representing a value which exceeds the compensation setting range is input into the new ECM, DTC P062F is stored and "Injector Memory Error" displays "Error".

Pilot quantity learning prohibition state/

READY or NG

Diagnostic Note:

The status is only displayed while performing "Pilot Quantity Learning".

State of "Pilot Quantity Learning"/

Standby, Wait, Learn, Stop, Comple

Diagnostic Note:

• The status is only displayed while performing "Pilot Quantity Learning".

• If "Pilot Quantity Learning" is incomplete, the MIL illuminates and DTC P062F is stored.

Fuel return temperature/

Min.: -40°C, Max.: 215°C

Diagnostic Note:

If the "Fuel Return Temp" value is not between 35°C (95°F) and 110°C (230°F), "Pilot Quantity Learning" is prohibited.

Injection pressure feedback compensation volume/

Min.: -500 mm³/st, Max.: 779.9 mm³/st

-20 to 20 mm³/st at standard temperature

• Suction control valve malfunction

• Clogged fuel filter element sub-assembly

Diagnostic Note:

• When the (actual) fuel pressure is equal to the target fuel pressure, this value becomes 0.

• This indicator can be used for diagnosing supply pump related malfunctions.

• When this value (absolute value) is large, it indicates that the difference between the actual and target fuel pressure is also large.

  A positive value indicates that the pressure feed is being increased due to insufficient pressure. A negative value indicates that pressure is being reduced due to excessive rail pressure.

  When the suction control valve does not close properly, it causes rail overpressure, and this value and the "Pump SCV Learning Value" slip to the negative volume side.

Injection Feedback Val #1

Injection Feedback Val #2

Injection Feedback Val #3

Injection Feedback Val #4

Injection volume correction for each cylinder/

Min.: -10 mm³/st, Max.: 10 mm³/st

Idling: -3.0 to 3.0 mm³/st

• Injector clogging

• Injector deterioration

• Decrease in cylinder compression

• Injector compensation code is incorrectly set (forgot to input code after replacement or made mistake during setting of code after replacing ECM with one from another vehicle)

Symptoms when out of range:

Rough idling, black smoke, white smoke, poor driveability, lack of power, abnormal combustion noise, difficult to start

Diagnostic Note:

• When idling after warmup, the injection amount for each cylinder is corrected to optimize the difference between the engine speed of each cylinder.

  Example: For cylinders that are slowing the engine speed compared to other cylinders, the injection volume is increased.

• "Injection Feedback Val" more than 3.0 mm³/st: Injector breakdown is causing injection volume deviation, or insufficient compression is causing poor combustion.

• Even if "Injection Feedback Val" for a cylinder is less than -3.0 mm³/st, the cylinder with this value does not necessarily have a problem.

  Tech Tips

  
  

  • The ECM adjusts each cylinder so that the average "Injection Feedback Val" of the 4 cylinders is approximately 0 mm³/st.

  • If more than one cylinder has a positive correction value, a normal cylinder may have a value less than -3.0 mm³/st.

Pilot 1 injection period/

Min.: 0 μs, Max.: 65535 μs

Symptoms when out of range:

Combustion noise, poor driveability, white smoke

Diagnostic Note:

Check to see if "Pilot 1 Injection Period" is not zero when symptoms occur.

Pilot 2 injection period/

Min.: 0 μs, Max.: 65535 μs

Symptoms when out of range:

Combustion noise, poor driveability, white smoke

Diagnostic Note:

Check to see if "Pilot 2 Injection Period" is not zero when symptoms occur.

Main injection period/

Min.: 0 μs, Max.: 65535 μs

Diagnostic Note:

• When the fuel pressure becomes 15000 kPa or less, "Main Injection Period" is set to 0.

• When the engine will not start, confirm that injection is performed.

• When P0093, P0627 or P062D is stored, there is an engine stall request. At that time, "Main Injection Period" equals 0.

  Tech Tips

  As the engine stalls 1 minute after the MIL illuminates, freeze frame data cannot be checked.

After injection period/

Min.: 0 μs, Max.: 65535 μs

Diagnostic Note:

Check to see if "After Injection Period" is not zero when the following symptoms occur:

Black smoke, poor driveability.

Pilot 1 injection timing/

Min.: -70°CA, Max.: 20°CA

Pilot 2 injection timing/

Min.: -50°CA, Max.: 20°CA

Main injection timing/

Min.: -90°CA, Max.: 90°CA

Diagnostic Note:

Use "Main Injection Timing" to check poor drivability when the following symptoms are present: Bad injection timing, black smoke, and white smoke.

After injection timing/

Min.: -10°CA, Max.: 50°CA

Fuel temperature/

Min.: -40°C, Max.: 215°C

Diagnostic Note:

After fully cold soaking the engine, the fuel temperature is the same as the outside air temperature.

Pressure discharge valve operation/

ON or OFF

Diagnostic Note:

This is the ECM command.

Idle minimum injection volume/

Min.: 0 mm³/st, Max.: 39.8 mm³/st

EGR valve target opening amount/

Min.: 0%, Max.: 100%

Symptoms when out of range:

• When value is out of range and approaching 0%: mass air flow meter degradation, intake or exhaust system blockage

• When value is out of range and approaching 100%: EGR pipe blockage

Diagnostic Note:

• Fully open: 100%.

• Fully closed: 0%.

• Used for comparison to "Actual EGR Valve Pos.".

EGR valve position/

Min.: 0%, Max.: 100%

Symptoms when out of range:

• EGR valve stuck open: Poor starts (engine does not stop), black smoke, white smoke, lack of power

• EGR valve stuck closed: Increased turbo booster noise

Diagnostic Note:

• Fully open: 100%.

• Fully closed: 0%.

• Inspect while comparing to "Target EGR Position".

• Check the valve movement via the Active Test.

• Sometimes malfunctions only occur around a certain temperature, so refer to the engine coolant temperature and outside temperature at the time the malfunction occurred.

EGR operation prohibition/

OK or NG

Diagnostic Note:

• OK: It is possible to perform the "Control the EGR Step Position" and "Activate the EGR Valve Close" Active Tests.

• NG: It is not possible to perform the "Control the EGR Step Position" and "Activate the EGR Valve Close" Active Tests.

EGR fully closed position learned value/

Min.: 0 V, Max.: 4.99 V

Diagnostic Note:

• This value is the EGR position sensor output voltage.

• When the value is at the upper or lower limit of the normal range, it is possible that a foreign object is lodged in the EGR valve seat area.

• As the lower and upper limits are 0 V and 1 V respectively, if the value becomes stuck at either of these values, there is a malfunction in the lift sensor or the valve position may be misaligned (foreign matter is present, etc.).

EGR valve fully closed position learning status/

OK or NG

Diagnostic Note:

• "OK" means the fully closed position learning has completed normally.

• When NG, the learned fully closed position may be outside of the normal range.

  When NG, there may be foreign matter stuck in the valve.

Status of the EGR Cooler Bypass VSV/

ON or OFF

• ON: Vacuum switching valve (for EGR bypass valve) is ON

• OFF: Vacuum switching valve (for EGR bypass valve) is OFF

• Vacuum switching valve (for EGR bypass valve)

• Vacuum switching valve (for EGR bypass valve) circuit

Diagnostic Note:

• When EGR Cooler Bypass VSV is ON, the value for EGR Cooler Bypass Position is Cooler and, when EGR Cooler Bypass VSV is OFF, the value for EGR Cooler Bypass Position is Bypass.

• The EGR cooler bypass VSV is controlled by the ECM and the vacuum switching valve (for EGR bypass valve) is opened and closed by the vacuum created by the vacuum pump.

Status of the EGR Cooler Bypass Position/

Cooler or Bypass

• Cooler: EGR Cooler Bypass VSV is "ON"

• Bypass: EGR Cooler Bypass VSV is "OFF"

• Vacuum switching valve (for EGR bypass valve)

• Vacuum switching valve (for EGR bypass valve) circuit

Diagnostic Note:

• When EGR Cooler Bypass VSV is ON, the value for EGR Cooler Bypass Position is Cooler and, when EGR Cooler Bypass VSV is OFF, the value for EGR Cooler Bypass Position is Bypass.

• The EGR cooler bypass VSV is controlled by the ECM and the vacuum switching valve (for EGR bypass valve) is opened and closed by the vacuum created by the vacuum pump.

Absolute throttle position sensor/

Min.: 0%, Max.: 100%

• Ignition switch ON: 60 to 85%

• Warmed-up and idling: 10 to 80%

Symptoms when out of range:

• Stuck closed: Engine stall, difficult to start, rough idling, lack of power, black smoke, white smoke

• Stuck open: Loud turbocharging sound, bad vibration when engine is stopped

• When the ECM detects a malfunction with the diesel throttle (MIL on), engine power is restricted but city driving is possible.

Diagnostic Note:

• Throttle position sensor output voltage is converted using 5 V = 100%.

• When fully closed: 14%.

• When fully open: 70%.

• When the ignition switch is turned from off to ON, the throttle valve fully opens once.

• When the ignition switch is turned from ON to off, the throttle valve fully closes once.

Target throttle position/

Min.: -128%, Max.: 127%

• Throttle valve fully opened: 0%

• Throttle valve fully closed: 100%

Diagnostic Note:

If there is a malfunction of the throttle actuator, compare the target and actual throttle position values for troubleshooting.

Actual diesel throttle position/

Min.: -128%, Max.: 127%

Symptoms when out of range:

• Stuck closed: Engine stall, difficult to start, lack of power, black smoke, rough idle

• Stuck open: Loud turbocharging sound, bad vibration when engine is stopped

• When ECM detects a malfunction of the diesel throttle (MIL on), engine power is restricted so that the vehicle can drive with a maximum speed of 80 to 100 km/h.

Diagnostic Note:

Closing percentage of the throttle valve.

• Fully closed: 100%.

• Fully open: 0%.

  Tech Tips

  There is no connection with the accelerator. However, under full load, the throttle is usually fully open (0%).

Diesel throttle motor duty/

Min.: 0%, Max.: 100%

Diagnostic Note:

When the moving force to open and close the diesel throttle valve increases, the value of the Throttle Motor Duty increases.

Throttle fully closed position learned value/

Min.: 0 deg, Max.: 84 deg

Diagnostic Note:

• When the ignition switch is turned from ON to off and 5 seconds elapse, learning of "Throttle Close Learning Val." will be complete.

• When "Throttle Close Learning Val." is outside of the normal range, a foreign object may be lodged in the throttle valve.

• If the value is stuck at the upper limit of 21.25 deg, there is a chance that a malfunction is present.

  However, as the initial value for the learned value is 21.25 deg, it is necessary to check the value after learning is completed.

Diesel throttle learning history/

OK or NG

Diagnostic Note:

• If the system is functioning properly, learning will be performed when the ignition switch is turned from ON to off.

• NG indicates that a foreign object may be lodged in the throttle valve or actuator components, or a disconnection/short exists in the signal wires.

Target booster pressure/

Min.: -640 kPa, Max.: 639.98 kPa

Diagnostic Note:

• Inspect while comparing with "MAP".

• With the accelerator fully open, if the actual manifold absolute pressure (MAP) is low compared to the target booster pressure by at least 20 kPa for 5 sec. or more, a feeling of a lack of power will occur.

• When the vehicle is driven with the engine speed at 3000 rpm or more and the accelerator pedal fully depressed, "MAP" is approximately equal to "Target Booster Pressure".

Boost pressure deviation/

Min.: -320 kPa, Max.: 320 kPa

Diagnostic Note:

Difference between target and actual boost pressure.

VN turbo command value/

Min.: -128%, Max.: 127%

Diagnostic Note:

• "VN Turbo Command" is a command value.

• 0%: Vanes fully open (contraction of actuation rods)

• 90% or more: Vanes fully closed (extension of actuation rods)

• When this value is large, the turbo works well.

• There is no actual opening angle data to handle the VN turbo command value.

VN turbo maximum opening amount/

Min.: 0%, Max.: 99.6%

Diagnostic Note:

• The maximum vane opening amount is displayed in %.

• The VN turbo is operated between VN Turbo Max Angle and VN Turbo Min Angle when the Test the Turbo Charger Step Motor Active Test is performed.

VN turbo minimum opening amount/

Min.: 0%, Max.: 99.6%

Diagnostic Note:

• The minimum vane opening amount is displayed in %.

• The VN turbo is operated between VN Turbo Max Angle and VN Turbo Min Angle when the Test the Turbo Charger Step Motor Active Test is performed.

VN turbo operation prohibition/

OK or NG

Diagnostic Note:

When NG is displayed, the ECM does not permit "Test the Turbo Charger Step Motor" and "Activate the VN Turbo Open" Active Tests to be performed.

Engine speed when starter off/

Min.: 0 rpm, Max.: 1593 rpm

Diagnostic Note:

Engine speed immediately after starting the engine.

Starter on count/

Min.: 0, Max.: 255

Diagnostic Note:

Number of times the starter turned on from the time the ignition switch was turned to ON.

Distance driven during previous trip/

Min.: 0 km, Max.: 326.4 km

Diagnostic Note:

Before 5 seconds elapse after starting the engine, which is the DTC P1604 (Startability Malfunction) detection duration, this parameter indicates the distance driven during the previous trip. After 5 seconds elapse after starting the engine, this parameter indicates the distance driven during the current trip calculated from the vehicle speed signal.

Status of the glow indicator supported

Unsupp or Supp

Status of the glow indicator

ON or OFF

Glow Request Lighting Time/

Min.: 0 ms, Max.: 33423 ms

Diagnostic Note:

• By comparing Glow Request Lighting Time to IG-ON Time, the operation state (whether the engine was started, etc.) can be determined.

• If the malfunction occurred when starting a cold engine at 0°C (32°F) or less, this item is useful in determining whether the engine was started after the glow plug indicator lights turned off.

IG-ON Time/

Min.: 0 ms, Max.: 33423 ms

Diagnostic Note:

• By comparing Glow Request Lighting Time to IG-ON Time, the operation state (whether the engine was started, etc.) can be determined.

• If the malfunction occurred when starting a cold engine at 0°C (32°F) or less, this item is useful in determining whether the engine was started after the glow plug indicator lights turned off.

Immobiliser fuel cut history/

ON or OFF

Diagnostic Note:

If Immobiliser Fuel Cut History was "ON" when DTC P1604 (Startability Malfunction) was stored, the engine could not be started due to the immobiliser.

Rough Idle #1

Rough Idle #2

Rough Idle #3

Rough Idle #4

Status of the Rough Idle #1 to #4/

ON or OFF

Diagnostic Note:

• This item indicates cylinders which had speeds lower than the other cylinders.

• This item indicates cylinders which are likely to be the cause of rough idle.

Electric load feedback value/

Min.: 0 mm³/st, Max.: 39.8 mm³/st

0 to 3.9 mm³/st

Diagnostic Note:

Expected injection volume increase after the electrical load turns from off to on.

A/C load feedback value/

Min.: 0 mm³/st, Max.: 39.8 mm³/st

0 to 3.6 mm³/st

Diagnostic Note:

Expected injection volume increase after the A/C turns from off to on.

Power steering load feedback value/

Min.: 0 mm³/st, Max.: 39.8 mm³/st

0 mm³/st

Diagnostic Note:

Expected injection volume increase after the power steering turns from off to on.

Mass air flow Low/

ON or OFF

• Mass air flow meter sub-assembly (value is out of range)

• Intake system blockage

• Disconnected air hoses (intake system)

• EGR system (EGR valve closing malfunction)

• Nozzle vane (turbo) movement problems

Symptoms when out of range:

Lack of power

Diagnostic Note:

• When DTC P1608 is output, this item indicates whether the cause of lack of power is related to the intake air amount.

• This item indicates whether the intake air amount measured by the mass air flow meter sub-assembly was insufficient, which would cause the fuel injection volume to be reduced for a certain period of time. If this is the case, this item displays "ON" and DTC P1608 (lack of engine power) is stored.

• This item is "ON" when the intake air amount is low due to blockage in the intake system, disconnection of hoses or an excessive amount of EGR, and also when the intake air amount is measured to be low due to deterioration of the mass air flow meter sub-assembly.

Status of the Boost Pressure Low/

ON or OFF

• Nozzle vane (turbo) stuck

• Disconnected air hoses (intake system)

• Manifold absolute pressure sensor

• Atmospheric pressure sensor (built into ECM)

• Difference between atmospheric pressure and intake pressure

Symptoms when out of range:

Lack of power

Diagnostic Note:

• When DTC P1608 is output, this item indicates whether the cause of lack of power is due to the boost pressure.

• This item indicates whether the actual boost pressure was insufficient compared to the target boost pressure, which would cause the fuel injection volume to be reduced for a certain period of time. If this is the case, this item displays "ON" and DTC P1608 (lack of engine power) is stored.

Status of the Common Rail Pressure Low/

ON or OFF

• Suction control valve (movement problems)

• Fuel leak

• Fuel pressure sensor (built into common rail assembly)

Symptoms when out of range:

Lack of power

Diagnostic Note:

• When DTC P1608 is output, this item indicates whether the cause of lack of power is the common rail pressure.

• This item indicates whether the actual common rail pressure was lower than the target pressure for a certain period of time. If this is the case, this item displays "ON" and DTC P1608 (lack of engine power) is stored.

Status of the Engine Coolant Temp High/

ON or OFF

• Engine coolant temperature sensor

• Engine coolant leak

• Radiator clog

Symptoms when out of range:

Lack of power

Diagnostic Note:

• When DTC P1608 is output, this item indicates whether the cause of lack of power is due to a high engine coolant temperature.

• This item indicates whether the fuel injection volume was reduced for a certain period of time due to a high engine coolant temperature (overheating). If this is the case, this item displays "ON" and DTC P1608 (lack of engine power) is stored.

Ratio of intake air amount to estimated intake air amount/

Min.: 0, Max.: 2.55

Engine speed 4000 rpm, EGR system off:

0.6 to 1.4

• Mass air flow meter sub-assembly

• Turbocharger sub-assembly

• Pipes between turbocharger sub-assembly and intake manifold are disconnected or leaking

• Pipes between mass air flow meter sub-assembly and turbocharger sub-assembly are disconnected or leaking

Symptoms when out of range:

Lack of power

Diagnostic Note:

• Even when the system is normal, the value may deviate from the range specified in Normal Condition for a short period of time (approximately 1 second).

• This item indicates the ratio of the intake air amount to the estimated intake air amount. The estimated air amount is calculated using the intake manifold pressure and intake air temperature.

• When DTC P1608 is stored, this item is useful in determining whether there is a problem in the turbocharger system or a disconnected or leaking pipe in the high pressure intake system when the boost pressure is insufficient.

• When performing troubleshooting, this information is only valid when there is a high load (the diesel throttle is fully open) and the EGR system is off.

Status of the MT Down Shift Indication/

ON or OFF

Status of the MT Up Shift Indication/

ON or OFF