Circuit/System Testing

Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S75 Traction Control Switch. It may take up to 2 min for all vehicle systems to power down.
Test for less than 10 Ω between the ground circuit terminal 2 and ground.
- If 10 Ω or greater
1. Ignition OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, repair the open/high resistance in the ground connection.
- Go to next step: If less than 10 Ω
Ignition ON.
Verify after the ignition has been turned on for 5 s that the traction/stability indicator in the instrument cluster remains OFF,
- If indicator does not remain OFF
1. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module.
2. Test for infinite resistance between the signal circuit terminal 5 and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, replace the K17 Electronic Brake Control Module.
- Go to next step: If indicator remains OFF
Install a 3 A fused jumper wire between the signal circuit terminal 1 and ground.
Verify the traction/stability indicator in the instrument cluster turns ON
- If indicator does not turn ON
1. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - Go to next step: If less than 1 V
3. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K17 Electronic Brake Control Module.
- Go to next step: If indicator turns ON
Test or replace the S75 Traction Control Switch.