Test Step 8 - Check The HVAC Control Modules
- Reconnect the A/C Heater Control harness connector(s).
- Ignition on, engine not running.
- With the scan tool, erase HVAC DTCs.
- Turn the ignition off to the lock position.
- Connect a jumper wire between the (C800) 5-volt Supply circuit and the (C11) Rear Blower Signal circuit in the Rear A/C Heater Control harness connector.
- Ignition on, engine not running.
- With the scan tool, read HVAC DTCs.
Does the scan tool display this DTC as active?
Yes
- Replace and program the A/C Heater Control in accordance with the Service Information. Refer to REMOVAL AND INSTALLATION .
- Perform the HVAC Verification Test. Refer to HVAC .
No
- Replace the Rear A/C Heater Control in accordance with the Service Information. Refer to REMOVAL AND INSTALLATION .
- Perform the HVAC Verification Test. Refer to HVAC .