Diagnostic Test

CHECK FOR ACTIVE DTC
1. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 30 seconds.
2. With the scan tool, read the active DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go to Step 2.
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. If the DTC is stored, check for an intermittent condition. Inspect the run/start relay (22) for proper fit. Look for pushed out or corroded terminals at the relay socket.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE RUN/START RELAY (22)
1. Turn the ignition off.
2. Remove the run/start relay (22) and substitute it with a known good relay.
3. Start the engine.
4. Allow the engine to idle for 1 minute.
5. With the scan tool, read the active DTCs.
  Does the scan tool display DTC: B2105-IGNITION RUN/START 1 CONTROL CIRCUIT HIGH?
  
  Yes
  - Replace the TIPM in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the run/start relay (22).
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .