35-FAILED COOL DOWN (MTC)
For a complete wiring diagram Refer to Section 8W.
- 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).
| Possible Causes |
| PREREQUISITES NOT MET BEFORE RUNNING THE COOLDOWN TEST |
| ANOTHER RELATED SYSTEM NOT FUNCTIONING
CORRECTLY |
| POWERTRAIN SYSTEM FAULTS PRESENT |
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.
Diagnostic Test
1. VERIFY THAT ALL OF THE COOLDOWN TEST PREREQUISITES WERE METReview 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
- Run the Cooldown Test again after all of the prerequisites are met. Then, if DTC 35 is still present, Go To 2. Otherwise, perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. CHECK FOR DTCs IN THE PCM
With the scan tool, select PCM.
Are any DTCs present in the PCM?
Yes
- Diagnose and repair the DTC(s). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) for PCM DTCs. Run the Cooldown Test again after the repair is complete.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Refer to the Service Information for additional Cooldown Test related diagnostic information and testing procedures. Run the Cooldown Test again after the repair is complete.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).