VR30DDTT engine
- CHECK DTC PRIORITY
If DTC P1233 or P2101 is displayed with DTC P1238 or P1290, first perform the confirmation procedure for DTC P1238 or P1290.
Is applicable DTC detected?
YES
Perform diagnosis of applicable.
- DTC P1238: Refer to DTC Description .
- DTC P1290: Refer to DTC Description .
NO
GO TO 2.
- CHECK FUSE
- Turn ignition switch OFF.
- Disconnect 15 A fuse (No. 63) from IPDM E/R.
- Check 15 A fuse for blown.
Is the fuse blown (open)?
YES
Replace the fuse. [Check the power supply if fuse is blown (open) again.]
NO
GO TO 3.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL
Check the voltage between ECM harness connector terminals as per the following.
ECM
Condition
Voltage (V)
+
-
Connector
Terminal
Connector
Terminal
F142
95
E152
204
Ignition switch
OFF
Approx. 0
ON
Battery voltage
Is the inspection result normal?
YES
GO TO 6.
NO
GO TO 4.
- CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
+
-
Continuity
IPDM E/R
ECM
Connector
Terminal
Connector
Terminal
E124
65
F142
139
Existed
- Also 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 THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
+
-
Continuity
IPDM E/R
ECM
Connector
Terminal
Connector
Terminal
E123
57
F142
95
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
- CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
- Turn ignition switch OFF.
- Disconnect electric throttle control actuator harness connector.
- Disconnect ECM harness connector.
- Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F119
1
F142
149
Existed
150
Not existed
2
149
Not existed
150
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace error-detected parts.
- CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
- Remove the intake air duct. Refer to AIR CLEANER AND AIR DUCT : Exploded View .
- Check if foreign matter is caught between the throttle valve and the housing.
Is the inspection result normal?
YES
GO TO 8.
NO
- Remove the foreign matter and clean the electric throttle control actuator inside.
- Perform throttle valve closed position leaning. Refer to Work Procedure .
- CHECK THROTTLE CONTROL MOTOR
Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunction electric throttle control actuator. Refer to INTAKE MANIFOLD COLLECTOR : Exploded View .