Heating & A/C System: 35

35-FAILED COOL DOWN

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
When the Cooldown Test is executed.

- Set Condition:
If the A/C system is unable to lower the evaporator temperature 11.11°C (20°F).





NOTE: This DTC will display as active if the ignition is not cycled after running the Cooldown Test. Otherwise, it will display as stored until cleared.

1. VERIFY THAT ALL OF THE COOLDOWN TEST PREREQUISITES WERE MET
1. Review the list of Cooldown Test prerequisites.
- DTC 31 or 32 must not be active.
- The refrigerant system must be adequately charged.
- The blower motor must operate correctly in all speeds.
- The work area ambient temperature must be above 18.3°C (65°F).
- The evaporator temperature must be above 18.3°C (65°F).
- The A/C compressor must be turned off.

Were all of the prerequisites met before running the Cooldown Test?

Yes

- Go To 2

No

- Using a scan tool, perform the Cooldown Test again after all of the prerequisites are met. Then, if DTC 35 is still present, Go To 2. Otherwise, perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK FOR DTCs IN THE PCM
1. With the scan tool, select PCM.

Are any DTCs present in the PCM?

Yes

- Diagnose and repair the DTC(s). Testing and Inspection for PCM DTCs. Using a scan tool, perform the Cooldown Test after the repair is complete.

No

- Refer to the Service Information for additional Cooldown Test related diagnostic information and testing procedures. Using a scan tool, perform the Cooldown Test after the repair is complete.
- Perform the BODY VERIFICATION TEST. Body Verification Test.