TEST
ACTION
APPLICABILITY
10
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Remove the applicable door actuator from the A/C Heater Housing Assembly.
Disconnect the door actuator harness connector.
Measure the resistance of the Common Door Driver circuit between the door actuator
harness connector and the A/C Heater Control C1 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the door actuator in accordance with the Service Infor-
mation.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Common Door Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
11
Turn the ignition off.
Reconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
With the DRBIII
t in HVAC, System Tests, actuate the HVAC Door Recalibration
Test.
What message does the DRBIII
t display?
All
Same msg as from start of test
Replace the A/C Heater Control in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
Different msg than from start of test
Using the wiring diagram/schematic as a guide, inspect the wiring
and connectors for conditions that caused the original test mes-
sage to set. Repair as necessary. Then, return to Test 1 of this
Symptom.
Perform BODY VERIFICATION TEST - VER 1.
No fault message
Using the wiring diagram/schematic as a guide, inspect the wiring
and connectors for conditions that caused the original test mes-
sage to set. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
549
HEATING & A/C
BLEND CALIBRATION FAULT - MTC —
Continued