Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
Before proceeding with the diagnostic procedure, verify that the connections are properly made, seated and verify proper pin terminal tension. A loose connection at any of the SCM connectors may cause the DTC to set.
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.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (V37) S/C SWITCH SENSE 1 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Right Steering Wheel Switch (Speed Control Switch) harness connector.
  NOTE:
  Visually and physically inspect the wiring harness between the Right Steering Wheel Switch (Speed Control Switch) harness connector and the SCM harness connector. Repair any damaged wires, connectors, and open/spread terminals. If harness is OK, proceed with test.
3. Turn the ignition on.
4. Measure the voltage of the (V37) S/C Switch Sense 1 circuit at the Right Steering Wheel Switch (Speed Control Switch) harness connector.
  Is the voltage present?
  
  Yes
  - If battery voltage is present, repair the (V37) S/C Switch Sense 1 circuit for a short to voltage.
  - If the voltage present is approximately 5.0 volts, Go To 4
  No
  - Go To 3
CHECK THE (V37) S/C SWITCH SENSE 1 CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the SCM C6 harness connector.
3. Measure the resistance of the (V37) S/C Switch Sense 1 circuit between the Right Steering Wheel Switch (Speed Control Switch) and SCM C6 harness connectors.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the open in the (V37) S/C Switch Sense 1 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Steering Column Module (SCM) in accordance with the Service Information. Refer to MODULE, STEERING COLUMN, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (V937) S/C SWITCH RETURN CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the SCM C6 harness connector.
3. Measure the resistance of the (V937) S/C Switch Return circuit between the Right Steering Wheel Switch (Speed Control Switch) and SCM C6 harness connectors.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the open in the (V937) S/C Switch Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Right Steering Wheel Switch (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 .