Symptom List:
*A/C STATUS INDICATOR FLASHING
*EBL STATUS INDICATOR FLASHING
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be *A/C STATUS INDICATOR
FLASHING.
POSSIBLE CAUSES
AC COOLDOWN TEST NEEDS TO BE RUN
HVAC DOOR RECALIBRATION NEEDS TO BE RUN
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Which status indicator is flashing on the A/C-Heater Control Module?
All
A/C Status Indicator
Go To 2
EBL Status Indicator
Go To 3
2 CAUTION: The evaporator temperature must be above 12.7°C (55°F) and the
work area ambient temperature must be above 21.1°C (70°F) to test A/C
system operation.
NOTE: The A/C status indicator can flash at two different rates, twice per
second (fast rate) when the control is indicating that the AC Cooldown Test
needs to be run, and once every two seconds (slow rate) when the AC
Cooldown Test is in progress.
NOTE: When the A/C status indicator is flashing, it will not indicate A/C
operating status. However, the A/C switch will continue to function nor-
mally.
NOTE: When the A/C status indicator is flashing, the EBL status indicator
will not function. However, the EBL switch will continue to function
normally.
Start the engine.
Turn the Blower control to the High position.
With the DRBIIIt in HVAC, System Tests, actuate the AC Cooldown Test. Allow one
minute for test to complete.
Does the DRBIIIt display: Cooldown Test Passed?
All
Yes → Test Complete.
No → Return to the symptom list and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
399
HEATING & A/C
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