THEFT DETERRENT SYSTEM Driver Side Door Courtesy Switch Circuit

DESCRIPTION

The theft warning ECU detects the condition of the front door courtesy light switch (driver side).

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK COMBINATION METER ASSEMBLY

   
   

   1. When the driver side door is opened / closed, check that the indicator in the combination meter operates normally.

      OK
      Indicator operates normally.

   
   

   NG

   INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR DRIVER SIDE) Click here

   OK

2. CHECK WIRE HARNESS (COMBINATION METER - THEFT WARNING ECU)

   

   
   

   1. Disconnect the C10 meter connector.

   2. Disconnect the T16 ECU connector.

   3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Specified Condition C10-17 - T16-7 (CTY) Below 1 Ω

   4. Measure the voltage of the wire harness side connectors.

      Standard voltage
      Tester Connection Specified Condition C10-17 - Body ground 10 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS AND CONNECTOR

   OK

   PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

3. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR DRIVER SIDE)

   

   
   

   1. Measure the resistance of the switch.

      Standard resistance
      Tester Connection Switch Condition Specified Condition 1 - Body ground Not pushed (ON) Below 1 Ω 1 - Body ground Pushed (OFF) 10 kΩ or higher

   
   

   NG

   REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY

   OK

4. CHECK WIRE HARNESS (COMBINATION METER - FRONT DOOR COURTESY LIGHT SWITCH (FOR DRIVER SIDE))

   

   
   

   1. Disconnect the C10 meter connector.

   2. Disconnect the D4 switch connector.

   3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Specified Condition C10-16 - D4-1 Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS AND CONNECTOR

   OK

   REPLACE COMBINATION METER ASSEMBLY