B10B2

B10B2-A/C COOL DOWN TEST PERFORMANCE (ATC)

For a complete wiring diagram consult Diagrams/Electrical.


- 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) within two minutes.








Diagnostic Test


1. VERIFY THAT ALL OF THE COOLDOWN TEST PREREQUISITES WERE MET
Review the list of Cooldown Test prerequisites.

- DTCs B1031 and B1032 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 B10B2 is still active, Go To 2. Otherwise, Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.




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). Run the Cooldown Test again after the repair is complete.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.


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. Body Verification Test.