Zone Circuit Shorted To IGN Or BAT - (MTC)

ZONE CIRCUIT SHORTED TO IGN OR BATT - MTC





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
When the Actuator Circuit Test is executed.

- Set Condition:
This message will set if the A/C Heater Control detects a short high on the Zone Door Driver circuit.





1. ACTIVE HVAC DTC(S) PRESENT
Turn the ignition on.
Using the scan tool, clear all HVAC DTC's.
Using the A/C Heater Control, operate the Zone Door Actuator.
With the scan tool, check for DTCs.
Does the scan tool display this DTC as active?

Yes

- Go To2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. (C61) ZONE DOOR DRIVER (A) CIRCUIT OPEN




Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Disconnect the Zone Door actuator harness connector.
Measure the resistance of the (C61) Zone Door Driver (A) circuit between the A/C Heater Control C1 harness connector and Zone Door actuator harness connector.
Does the ohm meter read open circuit?

Yes

- Repair the (C61) Zone Door Driver (A) circuit for an open.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To3

3. DOOR ACTUATOR OPEN
Measure the resistance between terminals 1 and 2 of the Zone Door actuator.
Does the ohm meter read open circuit?

Yes

- Replace the Zone Door actuator.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Replace the A/C Heater Control.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.