Symptom List:
COOLDOWN TEST SENSOR FAILURE
COOLDOWN TIME EXCESSIVE FAULT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be COOLDOWN TEST SENSOR
FAILURE.
When Monitored and Set Condition:
COOLDOWN TEST SENSOR FAILURE
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if a fault is detected with the Evaporator
Temperature Sensor/circuit when executing the Cooldown Test.
COOLDOWN TIME EXCESSIVE FAULT
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if the A/C system is unable to bring the
evaporator temperature down 6.7°C (20°F) within one minute.
POSSIBLE CAUSES
CHECK FOR HVAC DTCS
CHECK FOR PCM DTCS
A/C SYSTEM TESTING
TEST ACTION APPLICABILITY
1 CAUTION: The evaporator temperature must be above 12.7°C (55°F) to test
A/C system operation.
Turn the ignition on.
With the DRBIIIt, read HVAC DTCs.
Does the DRBIIIt display any HVAC DTCs?
All
Yes → Return to the symptom list and choose the symptom(s). After the
repair is complete, with the DRBIIIt, erase the DTC(s). Cycle the
ignition switch. Start the engine. Set the blower control to high
speed. With the DRBIIIt, actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
382
HEATING & A/C
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