POSSIBLE CAUSES
CHECK FOR ACTUATOR CIRCUIT TEST FAULT MESSAGES
CHECK FOR HVAC DTCS
DOOR ACTUATOR DRIVER CIRCUIT OPEN
COMMON DOOR DRIVER CIRCUIT OPEN
DOOR ACTUATOR
DOOR ACTUATOR/LINKAGE/DOOR
A/C - HEATER CONTROL MODULE
TEST ACTION APPLICABILITY
1 NOTE:AllActuator Circuit Test fault messages and Overcurrent DTCs must
be repaired before diagnosing Calibration fault messages.
Turn the ignition on.
With the DRBIIIt in HVAC, System Tests, actuate the Actuator Circuit Test.
Does the DRBIIIt display any Actuator Circuit Test fault messages?
All
Yes → Return to the symptom list and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 NOTE:AllActuator Circuit Test fault messages and Overcurrent DTCs must
be repaired before diagnosing Calibration fault messages.
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).
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
3 Turn the ignition off.
Disconnect the A/C - Heater Control Module C2 harness connector.
Measure the resistance between the Common Door Driver circuit and the applicable
door driver circuit.
Is the resistance above 70.0 ohms?
All
Yes → Go To 4
No → Go To 6
4 Turn the ignition off.
Disconnect the A/C - Heater Control Module C2 harness connector.
Disconnect the applicable door actuator harness connector.
Measure the resistance of the applicable door driver circuit between theA/C - Heater
Control Module C2 harness connector and the door actuator harness connector.
Is the resistance below 5.0 ohms?
All
Yes → Go To 5
No → Repair the applicable door driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
216
HEATING & A/C
BLEND CALIBRATION FAULT — Continued
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