Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
CHECK THE (V36) CRUISE CONTROL ON/OFF SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Body Control Module C3 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (V36) Cruise Control On/Off Switch Sense circuit between ground and the BCM C3 harness connector.
  Is the voltage present?
  
  Yes
  - Repair the short to voltage in the (V36) Cruise Control Switch Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE SPEED CONTROL SWITCH
1. Turn the ignition off.
2. Reconnect the BCM C3 harness connector.
3. Disconnect the Speed Control Switch harness connector.
4. Connect a jumper between the (V36) Cruise Control On/Off Switch Sense circuit and the (X920) Radio/Cruise/Horn Return circuit at the Speed Control Switch harness connector.
5. Turn the ignition on.
6. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active with the jumper in place?
  
  Yes
  - Replace the Speed Control Switch in accordance with the Service Information. Refer to SWITCH, SPEED CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE CLOCKSPRING
1. Turn the ignition off.
2. Disconnect the Clockspring C1 harness connector.
3. Connect a jumper between the (V36) Cruise Control On/Off Switch Sense and the (X920) Radio/Cruise/Horn Return circuit at the Clockspring C1 harness connector.
4. Turn the ignition on.
5. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active with the jumper in place?
  
  Yes
  - Replace the Clockspring in accordance with the Service Information. Refer to CLOCKSPRING, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 5
CHECK THE (V36) CRUISE CONTROL ON/OFF SWITCH SENSE CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the BCM C3 harness connector.
3. Measure the resistance of the (V36) Cruise Control On/Off Switch Sense circuit between the Clockspring C1 harness connector and the BCM C3 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the (V36) Cruise Control On/Off Switch Sense circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X920) RADIO/CRUISE/HORN RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (X920) Radio/Cruise/Horn Return circuit between the Clockspring C1 harness connector and the BCM C3 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace and program the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (X920) Radio/Cruise/Horn Return circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .