B10B2

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

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.

POSSIBLE CAUSES
- Prerequisites not met before running the test
- Another related system not functioning correctly
- Powertrain system faults present

DIAGNOSTIC TEST

1. VERIFY THAT ALL OF THE PREREQUISITES WERE MET
Review the list of test prerequisites.
- DTCs B1031, B1032, B1040, B1044, B1045, B1058, B105C, B105D, B1099, B109A, B10A2, B10A6, B10A7, B10A8, B10A9, B10AD, B10AE, B10AF, B222A, B2214, and U0141 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 16° C (60° F).
- The evaporator temperature must be above 18.3° C (65° F).
- The A/C compressor must be turned off.

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

YES: Go To 2
NO: Rerun the Cooldown Test 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.

Q: Are any DTCs present in the PCM?

YES: Diagnose and repair the DTC(s). Rerun the Cooldown Test after the repair is complete. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Rerun the Cooldown Test after the repair is complete. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test