Diagnosis Procedure

1. CHECK DTC WITH TCM

   Refer to "OBD-II DIAGNOSTIC TROUBLE CODE (DTC) ".

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace malfunctioning part.

2. CHECK STARTING SYSTEM

   Turn ignition switch OFF, then turn it to START.

   Does starter motor operate? 

   Yes or No 

   Yes: GO TO 3.

   No: Refer to "TROUBLE DIAGNOSIS WITH STARTING/CHARGING SYSTEM TESTER (STARTING) ".

3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
   1. Turn ignition switch OFF.
   2. Disconnect A/T assembly harness connector.
   3. Disconnect "unified meter and A/C amp." harness connector.
   4. Check harness continuity between A/T assembly terminal 9 and "unified meter and A/C amp." terminal 2.

      Refer to SYSTEM WIRING DIAGRAMS article.

      Continuity should exist  .

   5. Also check harness for short to ground and short to power.

   OK or NG 

   OK: GO TO  5.

   NG: GO TO 4.

4. DETECT MALFUNCTIONING PART

   Check the following.

   • Harness connectors M72, F102
   • Harness for open or short between A/T assembly and "unified meter and A/C amp."

   Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
   1. Disconnect ECM harness connector.
   2. Check harness continuity between ECM terminal 102 and "unified meter and A/C amp." terminal 21.

      Refer to SYSTEM WIRING DIAGRAMS article.

      Continuity should exist  .

   3. Also check harness for short to ground and short to power.

   OK or NG 

   OK: GO TO 6.

   NG: Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-III
   1. Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.

      Refer to "DIAGNOSIS PROCEDURE ".

      Continuity should exist  .

   2. Also check harness for short to ground and short to power.

   OK or NG 

   OK: GO TO 7.

   NG: Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK INTERMITTENT INCIDENT

   Refer to "DIAGNOSIS PROCEDURE ".

   OK or NG 

   OK: GO TO 8.

   NG: Repair or replace malfunctioning part.

8. REPLACE "UNIFIED METER AND A/C AMP."

Refer to "REMOVAL AND INSTALLATION OF UNIFIED METER AND A/C AMP ".

INSPECTION END