Diagnosis Procedure
- COMPONENT FUNCTION CHECK
With CONSULT
- Turn ignition switch OFF.
- Start the engine and let it idle.
- On CONSULT screen, select "FPCM" >> "DATA MONITOR" >> "FUEL PRESSURE".
- Check that the indicated value is between 400 kPa (4 bar, 4.08 kg/cm 2 , 58 psi) and 670 kPa (6.7 bar, 6.834 kg/cm 2 , 97.15 psi).
Is the inspection result normal?
YES
INSPECTION END
NO
GO TO 2.
- CHECK FUEL PRESSURE SENSOR POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect fuel pressure sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between fuel pressure sensor harness connector terminals.
Fuel pressure sensor
Voltage
(Approx.)
Connector
+
-
Terminal
M390
1
3
5 V
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 3.
- CHECK FUEL PRESSURE SENSOR POWER SUPPLY AND GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect FPCM harness connector and fuel pressure sensor harness connector.
- Check the continuity between FPCM harness connector and fuel pressure sensor harness connector.2WD models
+
-
Continuity
FPCM
Fuel pressure sensor
Connector
Terminal
Connector
Terminal
M135
8
M390
1
Existed
6
3
AWD models+
-
Continuity
FPCM
Fuel pressure sensor
Connector
Terminal
Connector
Terminal
M136
3
M390
1
Existed
5
3
- Also check harness for short to ground.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK FPCM POWER SUPPLY AND GROUND CIRCUIT
Check FPCM power supply and ground circuit. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
Replace FPCM. Refer to Removal and Installation .
NO
Repair or replace error-detected parts.
- CHECK FUEL PRESSURE SENSOR SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect FPCM harness connector and fuel pressure sensor harness connector.
- Check the continuity between FPCM harness connector and fuel pressure sensor harness connector.2WD models
+
-
Continuity
FPCM
Fuel pressure sensor
Connector
Terminal
Connector
Terminal
M135
7
M390
2
Existed
AWD models+
-
Continuity
FPCM
Fuel pressure sensor
Connector
Terminal
Connector
Terminal
M136
4
M390
2
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
Replace fuel pressure sensor.
NO
Repair or replace error-detected parts.