VR30DDTT engine
- CHECK FUSE
- Turn ignition switch OFF.
- Disconnect 15 A fuse (No. 52) from IPDM E/R.
- Check 15 A fuse for blown.
Is the fuse blown (open)?
YES
Replace the fuse. [Check the power supply if fuse is blown (open) again.]
NO
GO TO 2.
- CHECK FPCM POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect FPCM harness connector.
- Turn ignition switch ON.
- Check the voltage between FPCM harness connector and ground.
+
-
Voltage
FPCM
Connector
Terminal
B11
6
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- CHECK FPCM POWER SUPPLY CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector.
- Check the continuity between FPCM harness connector and IPDM E/R harness connector.
FPCM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
B11
6
E120
15
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
Perform trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK FPCM GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between FPCM harness connector and ground.
+
-
Continuity
FPCM
Connector
Terminal
B11
3
Ground
Existed
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- CHECK FPCM INPUT AND OUTPUT CIRCUIT FOR OPEN AND SHORT
- Disconnect ECM harness connector.
- Check the continuity between FPCM harness connector and ECM harness connector.
+
-
Continuity
FPCM
ECM
Connector
Terminal
Connector
Terminal
B11
4
E152
182
Existed
5
188
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace error-detected parts.
- CHECK FUEL PUMP CONTROL CIRCUIT FOR OPEN AND SHORT
- Disconnect "fuel level sensor unit and fuel pump (main)" harness connector.
- Check the continuity between FPCM harness connector and "fuel level sensor unit and fuel pump (main)" harness connector.
+
-
Continuity
FPCM
Fuel level sensor unit and fuel pump (main)
Connector
Terminal
Connector
Terminal
B11
1
B101
5
Existed
2
6
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace error-detected parts.
- CHECK FPCM
Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace FPCM. Refer to FUEL PUMP CONTROL MODULE (FPCM) : Removal & Installation .