Symptom:
AMBIENT AIR TEMP FAILURE (STORED)
When Monitored and Set Condition:
AMBIENT AIR TEMP FAILURE (STORED)
When Monitored:
Every 8 seconds with the ignition on.
Set Condition:
When an outside air temperature signal is expected is not received in the
maximum allowed time.
POSSIBLE CAUSES
AZC MODULE STORED CODES PRESENT
STORED CODES TEST COMPLETE
TEST
ACTION
APPLICABILITY
1
Note: Active codes must be resolved before diagnosing stored codes.
Anytime a code becomes active during this test, proceed to the conclusion question.
Turn the ignition on.
With the DRB, erase any stored DTC’s.
Monitor the DRB for active codes during the following test steps.
Turn the mode select switch to the panel position with the fan control on low.
Manually sweep the driver and passenger temperature control knobs from cold to hot
then back to cold.
Manually sweep the blower motor control knob through all positions.
Manually sweep the mode select switch knob through all positions.
Manually press the recirculation mode switch on, wait 30 seconds then press it off.
Manually press the A/C mode switch on, wait 30 seconds then press it off.
With the DRB, perform the AZC self test.
With the DRB, actuate all of the AZC door motors.
Place the vehicle on a hoist, and raise the wheels off the floor.
Start engine. Place the transmission in drive. Brake off.
WARNING: Be sure to keep hands and feet clear of rotating wheels. Keep
clear of the engine’s moving parts
Did any AZC code become active during this test?
All
Yes
→
Return to the Symptom List and choose the active code.
Perform BODY VERIFICATION TEST - VER 1.
No
→
No problem found at this time. Erase all codes before returning
vehicle to customer.
Perform BODY VERIFICATION TEST - VER 1.
271
HEATING & A/C