Circuit/System Testing

Ignition/Vehicle OFF, disconnect the S36 Dimmer Switch
Ignition ON/Vehicle in Service Mode
Verify a test lamp illuminates between ground circuit terminal 8 and B+.
- If the test lamp does not illuminate
  Repair the open/high resistance on the ground circuit or ground connection.
- Go to next step: If the test lamp illuminates
Test for 4.8 - 5.2 V between signal circuit terminal 7 and ground.
- If less than 4.8 V
1. Test circuit 2202 for a short to ground.
  - If a short to ground is found, repair the fault on the circuit.
  - Go to next step: If a short to ground is not found.
2. Test circuit 2202 for an open/high resistance.
  - If an open/high resistance is found, repair the fault on the circuit.
  - Go to next step: If an open/high resistance is not found.
3. Replace the K9 Body Control Module.
- If greater than 5.2 V
1. Test circuit 2202 for a short to voltage.
  - If a short to voltage is found, repair the fault on the circuit.
  - Go to next step: If a short to voltage is not found.
2. Replace the K9 Body Control Module.
- Go to next step: If between 4.8 - 5.2 V
Replace the S36 Dimmer Switch.