Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM-ENGINE CONTROL SYSTEM- ".

1. CHECK GROUND CONNECTION
   1. Turn ignition switch OFF.
   2. Check ground connection E9. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
   1. Disconnect electric throttle control actuator harness connector.
   2. Disconnect ECM harness connector.
   3. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

      Electric throttle control actuator		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F57	5	F14	5	Not existed
      			6	Existed
      	6		5	Existed
      			6	Not existed

   4. 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.

3. CHECK THROTTLE CONTROL MOTOR

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: GO TO 5.

4. CHECK INTERMITTENT INCIDENT

   Refer to "INTERMITTENT INCIDENT ".

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Repair or replace harness or connectors.

5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
   1. Replace electric throttle control actuator. Refer to INTAKE MANIFOLD COLLECTOR .
   2. Go to "SPECIAL REPAIR REQUIREMENT ".

      : INSPECTION END