Fault Code 15

1. Disconnect the 21-way connector from the control module and the 5-way connector from the blend air door actuator.
2. Check for continuity between terminal 8 of the 21-way connector and ground.
- If there is continuity, repair the wire.
- If there is not continuity, go to step 3.
3. Reconnect the 5-way connector and measure resistance between terminals 7 and 8 of the 21-way connector.
- If the resistance is less than 10 ohms, replace the blend air door actuator.
- If the resistance is more than 10 ohms, replace the control module.