Diagnosis Procedure
- CHECK FUSE
- Turn ignition switch OFF.
- Disconnect 15A fuse (No. 52) from IPDM E/R.
- Check that 15A fuse is not blowing.
Is the fuse blown (open)?
YES
Replace the fuse. [Check the power supply if fuse is blown (open) again.]
NO
GO TO 2.
- CHECK GROUND CONNECTION
Check ground connection B105. Refer to Ground Inspection in Circuit Inspection .
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace ground connection.
- CHECK FPCM GROUND CIRCUIT FOR OPEN AND SHORT
- Disconnect FPCM harness connectors.
- 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 4.
NO
Repair or replace error-detected parts.
- CHECK FPCM POWER SUPPLY
- Turn ignition switch ON.
- Check the voltage between FPCM harness connector terminals.
FPCM
Voltage
Connector
+
-
Terminal
B11
6
3
Battery voltage
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 5.
- CHECK FPCM POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect FPCM harness connectors.
- Disconnect IPDM E/R harness connectors.
- Check the continuity between IPDM E/R harness connector and FPCM harness connector.
+
-
Continuity
IPDM E/R
FPCM
Connector
Terminal
Connector
Terminal
E120
15
B11
6
Existed
- 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 RELAY SIGNAL
- Reconnect IPDM E/R harness connectors.
- Turn ignition switch ON.
- Check the voltage between ECM harness connectors.
ECM
Voltage
+
-
Connector
Terminal
Connector
Terminal
F142
124
E152
204
0 - 1.0 V
Is the inspection result normal?
YES
GO TO. 8
NO
GO TO 7.
- CHECK FUEL PUMP RELAY SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connectors.
- Disconnect IPDM E/R harness connectors.
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
+
-
Continuity
IPDM E/R
ECM
Connector
Terminal
Connector
Terminal
E124
69
F142
124
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 8.
NO
Repair or replace error-detected parts.
- CHECK POWER SUPPLY CIRCUIT
Perform trouble diagnosis for power supply circuit.
Is the inspection result normal?
YES
Replace IPDM E/R. Refer to Removal and Installation .
NO
Repair or replace error-detected parts.