DTC Diagnosis Procedure
- CHECK DTC PRIORITY
- If DTC P0046 is displayed with DTC P0643, first perform the confirmation procedure (trouble diagnosis) for DTC P0643.
- If DTC P0046 is displayed with DTC P2562 and/or P2566, first perform the confirmation procedure (trouble diagnosis) for DTC P2562 and/or P2566.
Is DTC P0643, P2562 or P2566 detected?
YES
Perform diagnosis of applicable.
- DTC P0643: Refer to DTC Description .
- DTC P2562: Refer to DTC Description .
- DTC P2566: Refer to DTC Description .
NO
GO TO 2.
- COMPONENT FUNCTION CHECK
With CONSULT
- Turn ignition switch ON.
- On CONSULT screen, select "ENGINE" >> "Active test" >> "WASTEGATE ACTUATOR".
- Select the following monitor items:
- W/G ACTUATOR POSITION B1
- W/G ACTUATOR POSITION B2
- W/G ACTUATOR POSI SEN B1
- W/G ACTUATOR POSI SEN B2
- Perform the test.
- Check that the relationship of the values displayed on the monitor items as the following.
Monitor item
W/G ACTUATOR POSITION B1/B2 (m)
W/G ACTUATOR POSI SEN B1/B2 (V)
Value
0.0073 - 0.0087
3.61 - 4.11
0.0033 - 0.0047
2.25 - 2.75
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 4.
- CHECK INSTALLATION CONDITION OF CONTROL ROD
- Turn ignition switch OFF.
- Visually check that the control rod is installed normally.
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning turbocharger. Refer to TURBOCHARGER : Removal & Installation .
- CHECK ELECTRIC WASTEGATE CONTROL ACTUATOR CIRCUIT
- Turn ignition switch OFF.
- Disconnect electric wastegate control actuator harness connector.
- Disconnect ECM harness connector.
- Check the continuity between electric wastegate control actuator harness connector and ECM harness connector.
Electric wastegate control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F139
1
F142
118
Existed
2
99
3
130
4
93
6
94
- Check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- CHECK CARBON DEPOSIT
- Remove turbocharger (malfunctioning bank side). Refer to TURBOCHARGER : Removal & Installation .
- Check waste gate valve for carbon deposit and catching a foreign matter.
Is the inspection result normal?
YES
Replace malfunctioning turbocharger. Refer to TURBOCHARGER : Removal & Installation .
NO
Clean the wastegate valve.