Diagnosis Procedure
- CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection E38. Refer to Ground Inspection in "CIRCUIT INSPECTION ".
Is the inspection result normal?
YES: GO TO 2.
NO: Repair or replace ground connection.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
- Check the voltage between ECM harness connector terminals.
ECM Condition Voltage + - Connector Terminal Condition Terminal F7 2 E16 112 Ignition switch OFF Approx. 0 V Ignition switch ON Battery voltage Is the inspection result normal?
YES: GO TO 7.
NO: GO TO 3.
- CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
- 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.
IPDM E/R ECM Continuity Connector Terminal Connector Terminal F12 70 F7 15 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 4.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
IPDM E/R ECM Continuity Connector Terminal Connector Terminal F12 54 F7 2 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- Check the continuity between IPDM E/R harness connector and ECM harness connector.
- CHECK FUSE
- Disconnect 15 A fuse (No. 51) from IPDM E/R.
- Check if 15 A fuse is blown.
Is the inspection result normal?
YES: GO TO 6.
NO: Replace 15 A fuse.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: Replace IPDM E/R. Refer to "EXPLODED VIEW ".
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 F29 5 F7 5 Not existed 6 Existed 6 5 Existed 6 Not existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 8.
NO: Repair or replace malfunctioning part.
- 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 (1) and the housing.
- Electric throttle control actuator (2)
- ←: Vehicle front
Courtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?
YES: GO TO 9.
NO: Remove the foreign matter and clean the electric throttle control actuator inside, refer to "EXPLODED VIEW ", and then perform throttle valve closed position learning. Refer to "THROTTLE VALVE CLOSED POSITION LEARNING: DESCRIPTION ".
- CHECK THROTTLE CONTROL MOTOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 10.
NO: GO TO 11.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: GO TO 11.
NO: Repair or replace harness or connectors.
- REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
- Replace electric throttle control actuator. Refer to "EXPLODED VIEW ".
- Refer to "SPECIAL REPAIR REQUIREMENT ".
INSPECTION END