Circuit / System Testing

Cruise Control Set / Coast / Resume / Accelerate Switch Signal

1. Ignition / Vehicle & All vehicle systems - Off
2. Disconnect the component: K9 Body Control Module
3. Disconnect the component: Cruise Control Switch Assembly
4. Ignition - On / Vehicle - In Service Mode
5. Test for less than 1 V between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
   • Cruise Control Set / Coast / Resume / Accelerate Switch Signal circuit at the switch harness connector and ground.
   • If 1 V or greater - Repair the short to voltage on the circuit.
   • Go to next step: If less than 1 V
6. Ignition / Vehicle - Off
7. Test for infinite resistance between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
   • Cruise Control Set / Coast / Resume / Accelerate Switch Signal circuit at the switch harness connector and ground.
   • If less than infinite resistance - Repair the short to ground on the circuit.
   • Go to next step: If infinite resistance
8. Test for less than 2 ohms between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and the other end of the circuit.
   • Cruise Control Set / Coast / Resume / Accelerate Switch Signal circuit at the switch harness connector and the other end of the circuit.
   • If 2 ohms or greater - Repair the open / high resistance in the circuit.
   • Go to next step: If less than 2 ohms
9. Test or replace the component: Cruise Control Switch Assembly
10. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.
    • If the DTC sets 

      Replace the component: K9 Body Control Module

    • Go to next step: If the DTC is not set 
11. All OK.

Distance Sensing Cruise Control Gap Up / Down Switch Signal

1. Ignition / Vehicle & All vehicle systems - Off
2. Disconnect the component: K9 Body Control Module
3. Disconnect the component: Cruise Control Switch Assembly
4. Ignition - On / Vehicle - In Service Mode
5. Test for less than 1 V between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
   • Distance Sensing Cruise Control Gap Up / Down Switch Signal circuit at the switch harness connector and ground.
   • If 1 V or greater - Repair the short to voltage on the circuit.
   • Go to next step: If less than 1 V
6. Ignition / Vehicle - Off
7. Test for infinite resistance between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
   • Distance Sensing Cruise Control Gap Up / Down Switch Signal circuit at the switch harness connector and ground.
   • If less than infinite resistance - Repair the short to ground on the circuit.
   • Go to next step: If infinite resistance
8. Test for less than 2 ohms between the test points:
   • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and the other end of the circuit.
   • Distance Sensing Cruise Control Gap Up / Down Switch Signal circuit at the switch harness connector and the other end of the circuit.
   • If 2 ohms or greater - Repair the open / high resistance in the circuit.
   • Go to next step: If less than 2 ohms
9. Test or replace the component: Cruise Control Switch Assembly
10. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.
    • If the DTC sets 

      Replace the component: K9 Body Control Module

    • Go to next step: If the DTC is not set 
11. All OK.