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A/C MODE DOOR INPUT OPEN/SHORT TO GROUND - MTC —
TEST
3
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance between ground and the A/C Mode Switch Mux circuit.
Is the resistance below 10K ohms?
Yes → Repair the A/C Mode Switch MUX circuit for a short to ground.
No
4
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance between the Sensor Ground circuit and the A/C Mode Switch
MUX circuit at the A/C - Heater Control C! harness connector.
Is the resistance below 10K ohms?
Yes → Repair the A/C Mode Switch MUX circuit for a short to the Sensor
No
5
Turn the ignition off.
Reconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance of the A/C Mode Switch MUX circuit between the A/C Heater
Control C1 harness connector and the BCM C2 harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
No
ACTION
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 4
Ground circuit.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 5
→ Repair the A/C Mode Switch MUX circuit for an open.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
277
HEATING & A/C
Continued
APPLICABILITY
All
All
All
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