Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection M95. 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 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

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.

DTC	Electric throttle control actuator			ECM		Continuity
DTC	Bank	Connector	Terminal	Connector	Terminal	Continuity
P1236	2	F64	5	F110	2	Not existed
			5		5	Existed
			6		2	Existed
			6		5	Not existed
P2118	1	F66	5	F111	50	Not existed
			5		53	Existed
			6		50	Existed
			6		53	Not existed

Also check harness for short to ground and short to power.
Is the inspection result normal?

YES: GO TO 3.

NO: Repair or replace malfunctioning part.

CHECK THROTTLE CONTROL MOTOR
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 4.

NO: GO TO 5.
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

Is the inspection result normal?

YES: GO TO 5.

NO: Repair or replace harness or connectors.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace malfunctioning electric throttle control actuator.
2. Perform "SPECIAL REPAIR REQUIREMENT ".
  : INSPECTION END