Fault Code 13

1. Check the blend air door and linkage for binding.
2. Disconnect the 21-way connector at the control module and the 5-way connector at the blend air door actuator.
3. Check for continuity between terminal 6 of the 21-way connector and terminal 5 of the 5-way connector.
- If there is no continuity, repair the open wire.
- If there is continuity, go to step 4.
4. Reconnect the 5-way connector.
5. Check for resistance between terminals 4 and 6 of the 21-way connector. The resistance should be between 20 and 50 ohms.
- If the resistance is correct, replace the control module.
- If the resistance is incorrect, replace the blend air door actuator.