Diagnosis Procedure
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
- Check the voltage between ECM harness connector and ground under the following conditions.
ECM Ground Condition Voltage Connector terminal E80 173 Ground Ignition switch: OFF Approx. 0 V Ignition switch: ON Battery voltage Is the inspection result normal?
YES: GO TO 8.
NO: GO TO 2.
- Check the voltage between ECM harness connector and ground under the following conditions.
- 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 ECM harness connector and IPDM E/R harness connector.
IPDM E/R ECM Continuity Connector Terminal Connector terminal E15 60 E80 123 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 3.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between ECM and IPDM E/R
- Loose or poor connection for each connector and harness
: Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
IPDM E/R ECM Continuity Connector Terminal Connector terminal E15 55 E80 173 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 6.
NO: GO TO 5.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between ECM and IPDM E/R
- Loose or poor connection for each connector and harness
: Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK FUSE
- Disconnect 20 A fuse (No. 64) from IPDM E/R.
- Check 20 A fuse for blown.
Is the inspection result normal?
YES: GO TO 7.
NO: Replace 20 A fuse.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair or replace harness or connectors.
- 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 F66 5 F110 57 Not existed 63 Existed 6 57 Existed 63 Not existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 9.
NO: Repair or replace.
- CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
- Remove the intake air duct.
- Check if foreign matter is caught between the throttle valve and the housing.
Is the inspection result normal?
YES: GO TO 10.
NO: Remove the foreign matter and clean the electric throttle control actuator inside, then perform throttle valve closed position learning. Refer to "WORK PROCEDURE ".
- CHECK THROTTLE CONTROL MOTOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 11.
NO: GO TO 12.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: GO TO 12.
NO: Repair or replace harness or connectors.
- REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
- Replace malfunction electric throttle control actuator. Refer to "REMOVAL AND INSTALLATION ".
- Perform "SPECIAL REPAIR REQUIREMENT ".
: INSPECTION END