VR30DDTT engine
- CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect "fuel level sensor unit and fuel pump" harness connector.
- Turn ignition switch ON.
- Check the voltage between "fuel level sensor unit and fuel pump" harness connector and ground.
+
-
Voltage (V)
Fuel level sensor unit and fuel pump
Connector
Terminal
B101
8
Ground
Approx. 5
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between "fuel level sensor unit and fuel pump" harness connector and ECM harness connector.
+
-
Continuity
Fuel level sensor unit and fuel pump
ECM
Connector
Terminal
Connector
Terminal
B101
8
E152
180
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
Perform the trouble diagnosis for ECM power supply circuit. Refer to Diagnosis Procedure .
NO
Repair or replace error-detected parts.
- CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between "fuel level sensor unit and fuel pump" harness connector and ECM harness connector.
+
-
Continuity
Fuel level sensor unit and fuel pump
ECM
Connector
Terminal
Connector
Terminal
B101
7
E152
200
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
- Check the continuity between ECM harness connector and ground.
+
-
Continuity
ECM
Connector
Terminal
F143
3
Ground
Existed
F142
87
88
E152
199
201
204
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- Check the continuity between ECM harness connector and ground.
- CHECK FUEL TANK TEMPERATURE SENSOR
Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace "fuel level sensor unit and fuel pump". Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY : Removal & Installation .