HVAC

B222A-VEHICLE LINE MISMATCH

For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

With the ignition on.

- Set Condition:

The A/C Heater Control will receive and monitor the vehicle line message from the PCM and record the vehicle line if different from the last vehicle line.





Diagnostic Test

1. ACTIVE DTC(S) PRESENT

Turn the ignition on.

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. CHECK VEHICLE LINE IN PCM

With the scan tool compare the vehicle line that is programmed into the PCM to the vehicle line of the vehicle.

Does the vehicle line programmed into the PCM match the vehicle?

Yes

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace and program the Powertrain Control Module. Ensure the PCM is replaced with the correct vehicle line PCM.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test