Blower Not On High (MTC)

BLOWER NOT ON HIGH (MTC)

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
When executing the Cooldown Test.

- Set Condition:
If the front blower is not operating at high speed.





Diagnostic Test

1. CHECK FOR HVAC DTCs
Turn the ignition on.
With the scan tool, read HVAC DTCs.
Does the scan tool display any DTCs?

Yes

- Diagnose and Repair the DTC(s).
- Run the Cooldown Test after the repair is complete.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To 2

2. CHECK FOR IPM DTCs
With the scan tool, read IPM DTCs.
Does the scan tool display any DTCs?

Yes

- Diagnose and Repair the DTC(s).
- Run the Cooldown Test after the repair is complete.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To 3

3. VERIFY COOLDOWN TEST SET UP CONDITIONS WERE MET
Was the Blower Control set to high speed for the entire Cooldown Test?

Yes

- Check the Blower Motor and related circuits for the cause of Blower operational problems. Repair as necessary.
- Run the Cooldown Test after the repair is complete.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Start the engine. Set the Blower Control to high speed. With the scan tool, actuate the Cooldown Test.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.