VR30DDTT engine
- CHECK DTC PRIORITY
If DTC P0235 is displayed with another DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Description .
NO
GO TO 2.
- CHECK TURBOCHARGER BOOST SENSOR POWER SUPPLY
- Disconnect turbocharger boost sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between turbocharger boost sensor harness connector and ground.
+
-
Voltage
(Approx.)
Turbocharger boost sensor
Connector
Terminal
F90
2
Ground
5 V
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Refer to Diagnosis Procedure .
Is inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK TURBOCHARGER BOOST SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
+
-
Continuity
Turbocharger boost sensor
ECM
Connector
Terminal
Connector
Terminal
F90
4
F142
99
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 TURBOCHARGER BOOST SENSOR INPUT SIGNAL CIRCUIT
- Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
+
-
Continuity
Turbocharger boost sensor
ECM
Connector
Terminal
Connector
Terminal
F90
1
F142
116
Existed
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace error-detected parts.
- Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
- CHECK TURBOCHARGER BOOST SENSOR
Check the turbocharger boost sensor. Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning turbocharger boost sensor. Refer to CHARGE AIR COOLER : Exploded View .