DTC Diagnosis Procedure

If DTC P0236 is displayed with DTC P0237 or P0238, first perform the trouble diagnosis for DTC P0237 or P0238.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Description .

NO>>

GO TO 2.

1. Disconnect turbocharger boost sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between turbocharger boost sensor harness connector and ground.

   +			-	Voltage (Approx.)
   Turbocharger boost sensor
   Bank	Connector	Terminal
   1	F90	2	Ground	5 V
   2	F91

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 3.

Refer to Diagnosis Procedure . Is inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.

   +			-		Continuity
   Turbocharger boost sensor			ECM
   Bank	Connector	Terminal	Connector	Terminal
   1	F90	4	F142	99	Existed
   2	F91	4		125

4. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

1. Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.

   +			-		Continuity
   Turbocharger boost sensor			ECM
   Bank	Connector	Terminal	Connector	Terminal
   1	F90	1	F142	116	Existed
   2	F91	1		119

2. 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 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 .