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 SCCM 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.
(A929) FUSED B(+) CIRCUIT OPEN OR SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the Multifunction Switch (SCM C1) harness connector.
3. Measure the voltage of the (A929) Fused B(+) circuit at the Multifunction Switch (SCM C1) harness connector.
  Is battery voltage present?
  
  Yes
  - Go To 3
  No
  - Repair the open in the (A929) Fused B(+) circuit. Inspect the related fuse. If the fuse is open, check the circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(F944) RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED TO GROUND
1. Turn the ignition on.
2. Measure the voltage of the (F944) Run/Start Relay Output circuit at the Multifunction Switch (SCM C1) harness connector.
  Is battery voltage present?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (F944) Fused Run/Start Relay Output circuit. Inspect the related fuse. If the fuse is open, check the circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Z911) GROUND CIRCUIT OPEN
1. Turn the ignition off.
2. Measure the resistance between ground and the (Z911) Ground circuit at the Multifunction Switch (SCM C1) harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the open in the (Z911) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(D507) LIN BUS CIRCUIT OPEN OR SHORTED TO GROUND
1. Turn the ignition on.
2. Measure the voltage of the (D507) LIN Bus circuit at the Multifunction Switch (SCM C1) harness connector.
  Is voltage present?
  
  Yes
  - Replace the Multifunction Switch in accordance with the Service Information. Refer to SWITCH, MULTIFUNCTION, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the open in the (D507) LIN Bus circuit between the Multifunction Switch (SCM C1) and SCM C3 harness connectors.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .