Diagnostic Test

CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. With the scan tool, read DTCs.
  Does the scan tool display DTC: P0691-COOLING FAN 1 CONTROL CIRCUIT LOW?
  
  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 STANDARD PROCEDURE .
LOW SPEED COOLING FAN RELAY
1. Turn the ignition off.
2. Remove the Low Speed Cooling Fan Relay and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, clear all DTCs.
5. Turn the ignition off.
6. Turn the ignition on.
7. With the scan tool, read DTCs.
  Does the scan tool display DTC: P0691-COOLING FAN 1 CONTROL CIRCUIT LOW?
  
  Yes
  - Go To 3
  No
  - Replace the Low Speed Cooling Fan Relay.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
TOTALLY INTEGRATED POWER MODULE
NOTE:
Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the TIPM in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .