Test Point 10
Test point 10Motor of outside air / recirculation valve
Signal implausible
Fault code 29
Diagnosis conditions
No control module fault stored.
No fault with supply voltage (5 volts).
Signal implausible
1. Check outside air / recirculation valve for smooth operation.
2. Unplug connectors A, B, C and D from the heating/air-conditioning control.
3. Unplug connector from outside air / recirculation valve drive motor.
4. Connect ohmmeter to connector D 13 and drive motor connector pin 1.
Display: < 5 Ohms
Connect ohmmeter to connector D 5 and drive motor connector pin 2.
Display: < 5 Ohms
Connect ohmmeter to connector B 17 and drive motor connector pin 3.
Display: < 5 Ohms
Connect ohmmeter to connector C 8 and drive motor connector pin 4.
Display: < 5 Ohms
Connect ohmmeter to connector A 12 and drive motor connector pin 5.
Display: < 5 Ohms
5. Check wire from connector D 13 to drive motor pin 1 for short to B+ and short to ground.
6. Check wire from connector D 5 to drive motor pin 2 for short to B+ and short to ground.
7. Check wire from connector B 17 to drive motor pin 3 for short to B+ and short to ground.
8. Check wire from connector C 8 to drive motor pin 4 for short to B+ and short to ground.
9. Check wire from connector A 12 to drive motor pin 5 for short to B+ and short to ground.