Error Code 02 (Blend Door Problem)
- Unplug EATC control panel connectors. Check blend door actuator movement. Turn ignition on, with engine off.
- On 8-pin connector, connect a jumper wire from Black wire to Dark Blue/Light Green wire. Blend door should move. Disconnect jumper wire from Dark Blue/Light Green wire, and connect to Orange wire terminal. Blend door should move in other direction.
- If blend door actuator does not operate in both directions, proceed to next step. If actuator operates in both directions, connect EATC control panel connectors and retest system. See EATC SYSTEM FUNCTIONAL TEST
. If test is successful (no Code 02), test is complete.
- Check blend door feedback potentiometer. Turn ignition off. Measure resistance between specified wire terminals on 12-pin EATC control panel connector. See BLEND DOOR FEEDBACK POTENTIOMETER RESISTANCE TEST
table.
- If resistance is okay, replace EATC control panel. Check system function using EATC SYSTEM FUNCTIONAL TEST
. If resistance is not correct, go to next step.
- Unplug both EATC control panel connectors and blend door actuator connector. Check wiring between EATC control panel and blend door actuator for continuity.
- If continuity is not present, repair or replace wiring harness. If continuity exist, replace blend door actuator. Retest system. See EATC SYSTEM FUNCTIONAL TEST
.
BLEND DOOR FEEDBACK POTENTIOMETER RESISTANCE TEST
| 12-Pin Connector Wires |
Ohms |
| Light Green/Orange & Orange/Black |
5000-7000 |
| Orange/White & Orange/Black |
300-7300 |
| Orange/White & Light Green/Orange |
300-7300 |