Pinpoint Test G: The Traction Control Switch Illumination Is Inoperative

G1 CHECK CIRCUIT 29S-LH45 (OG/WH) FOR AN OPEN
- Disconnect: Traction Control Switch C2267.
- With the parking lamps ON, rotate the instrument panel dimmer switch to the full illumination position.
- Measure the voltage between the traction control switch C2267-8, circuit 29S-LH45 (OG/WH), harness side and ground.
  
  Fig 1: Checking Circuit 29S-LH45 (OG/WH) For Open
- Is the voltage greater than 10 volts?
Yes : GO to G2.

No : REPAIR the circuit. TEST the system for normal operation.
G2 CHECK CIRCUIT 91-LH45 (BK/WH) FOR AN OPEN
- Turn the parking lamps OFF.
- Measure the resistance between the traction control switch C2267-7, circuit 91-LH45 (BK/WH), harness side and ground.
  
  Fig 2: Checking Circuit 91-LH45 (BK/WH) For Open
- Is the resistance less than 5 ohms?
Yes : INSTALL a new traction control switch. TEST the system for normal operation.

No : REPAIR the circuit. TEST the system for normal operation.