B10B2

B10B2-A/C COOL DOWN TEST PERFORMANCE

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) within two minutes.





1. VERIFY THAT ALL OF THE COOLDOWN TEST PREREQUISITES WERE MET
1. 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 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 DTCs. Testing and Inspection for PCM DTCs. Run the Cooldown Test again after the repair is complete.
- Perform the BODY VERIFICATION TEST. 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 the BODY VERIFICATION TEST. Body Verification Test