Circuit/System Testing

Verify the test lamp state:

S13D Door Lock Switch - Driver - Not Used = Test lamp Off

Unlock Switch - Pressed = Test lamp On

Lock Switch - Pressed = Test lamp On

• If not the specified state 

1. Ignition/Vehicle - Off & Remove - Test lamp
2. Disconnect the electrical connector:
   • X6 @ K9 Body Control Module
   • X1 @ X53A Fuse Block - Rear Body
3. Ignition - On / Vehicle - In Service Mode
4. Test for less than 1 V between the test points:
   • Control circuit terminal 1 @ Component harness & Ground
   • Control circuit terminal 2 @ Component harness & Ground
   • If 1 V or greater - Repair the short to voltage on the circuit.
   • Go to next step: If less than 1 V
5. Ignition/Vehicle - Off
6. Test for infinite resistance between the test points:
   • Control circuit terminal 1 @ Component harness & Ground
   • Control circuit terminal 2 @ Component harness & Ground
   • If less than infinite resistance - Repair the short to ground on the circuit.
   • Go to next step: If infinite resistance
7. Test for less than 2 ohms between the test points:
   • Control circuit terminal 1 @ Component harness & Terminal 4 X6 @ K9 Body Control Module
   • Control circuit terminal 2 @ Component harness & Terminal 43 X1 @ X53A Fuse Block - Rear Body
     • If 2 ohms or greater - Repair the open/high resistance in the circuit.
     • If less than 2 ohms - Refer to Power Door Locks Malfunction 

• Go to next step: If the specified state