DTC 9: A Problem in the Recirculation Control Motor Circuit, Linkage, Door, or Motor
- 1. Problem verification:
1. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
2. Do the Self-Diagnostic Function with the HVAC control unit .
3. Check for DTCs.
Is DTC 9 indicated?
YES
Go to step 2.
NO
Intermittent failure. Check for loose wires or poor connections on the recirculation control motor circuit.
- 2. Open wire check (F/R MTR(REC)/REC line):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connectors.
HVAC control unit 32P connector Recirculation control motor 7P connector 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode HVAC control unit 32P connector: disconnected Recirculation control motor 7P connector: disconnected Test point 1 HVAC control unit 32P connector No. 31 Test point 2 Recirculation control motor 7P connector No. 7 Is there continuity?
YES
The F/R MTR(REC)/REC wire is not open. Go to step 3.
NO
Repair an open in the wire between the HVAC control unit and the recirculation control motor.
- 3. Open wire check (F/R MTR(FRESH)/FRS line):
1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode HVAC control unit 32P connector: disconnected Recirculation control motor 7P connector: disconnected Test point 1 HVAC control unit 32P connector No. 32 Test point 2 Recirculation control motor 7P connector No. 6 Is there continuity?
YES
The F/R MTR(FRESH)/FRS wire is not open. Go to step 4.
NO
Repair an open in the wire between the HVAC control unit and the recirculation control motor.
- 4. Shorted wire check (F/R MTR(REC)/REC line):
1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode HVAC control unit 32P connector: disconnected Recirculation control motor 7P connector: disconnected Test point 1 HVAC control unit 32P connector No. 31 Test point 2 Body ground Is there continuity?
YES
Repair a short to ground in the wire between the HVAC control unit and the recirculation control motor.
NO
The F/R MTR(REC)/REC wire is OK. Go to step 5.
- 5. Shorted wire check (F/R MTR(FRESH)/FRS line):
1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode HVAC control unit 32P connector: disconnected Recirculation control motor 7P connector: disconnected Test point 1 HVAC control unit 32P connector No. 32 Test point 2 Body ground Is there continuity?
YES
Repair a short to ground in the wire between the HVAC control unit and the recirculation control motor.
NO
The F/R MTR(FRESH)/FRS wire is OK. Go to step 6.
- 6. Recirculation control motor check:
1. Test the recirculation control motor .
Is the recirculation control motor OK?
YES
Replace the HVAC control unit .
NO
Replace the recirculation control motor , or repair the recirculation control linkage or door.
