Diagnosis Procedure
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL
Check the voltage between ECM harness connector terminals as per the following conditions.
ECM Condition Voltage (Approx.) Connector + - Terminal E18 122 127 Ignition switch: OFF 0 V Ignition switch: ON Battery voltage Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 2.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL 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.
+ - Continuity ECM IPDM E/R Connector Terminal Connector Terminal E18 122 E15 55 Existed - Also check harness for short to ground and to power.
Is the inspection result normal?
YES: GO TO 3.
NO: Repair or replace error-detected parts.
- CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
+ - Continuity ECM IPDM E/R Connector Terminal Connector Terminal F26 77 E15 60 Existed - Also check harness for short to ground.
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 ECM harness connector and IPDM E/R harness connector.
- CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT
- 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.
+ - Continuity Electric throttle control actuator ECM Connector Terminal Connector Terminal F29 5 F26 51 Not existed 52 Existed 6 51 Existed 52 Not existed - Also check harness for short to ground and to power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair or replace error-detected parts.
- CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
- Remove the intake air duct. Refer to "EXPLODED VIEW ".
- Check if foreign matter is caught between the throttle valve and the housing.
Is the inspection result normal?
YES: GO TO 6.
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
Check the throttle control motor. Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
NO: Replace electric throttle control actuator. Refer to "EXPLODED VIEW ".