DTC B2986 (55): An Open in the Recirculation Control Motor Circuit
| DTC Description | DTC |
|---|---|
| B2986 An open in the recirculation control motor circuit |
- 1. Problem verification:
1. Clear the DTC with the HDS.
2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
3. Do the Self-Diagnostic Function with the HDS or the climate control unit - Refer to: How to Troubleshoot the Body ElectricalHow to Troubleshoot the Climate Control System .
4. Check for DTCs.
DTC Description DTC B2986 An open in the recirculation control motor circuit Is DTC B2986 or 55 indicated?
YES
Go to step 2.
NO
Intermittent failure. Check for loose wires or poor connections on the recirculation control motor circuit.
- 2. Determine possible failure area (RFD-P/FRD-P line, others):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.
Recirculation control motor 7P connector 3. Turn the vehicle to the ON mode.
4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Recirculation control motor 7P connector: disconnected Test point 1 Recirculation control motor 7P connector No. 2 Test point 2 Body ground Is there about 5 V?
YES
The RFD-P/FRD-P wire is OK. Go to step 3.
NO
Go to step 4.
- 3. Open wire check (SENSOR COM/SENS-COM line):
1. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Recirculation control motor 7P connector: disconnected Test point 1 Recirculation control motor 7P connector No. 1 Test point 2 Recirculation control motor 7P connector No. 2 Is there about 5 V?
YES
The SENSOR COM/SENS-COM wire is OK. Replace the recirculation control motor .
NO
Repair an open in the wire between the climate control unit and the recirculation control motor.
- 4. Open wire check (RFD-P/FRD-P line):
1. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Recirculation control motor 7P connector: disconnected Test point 1 Climate control unit 32P connector No. 6 Test point 2 Body ground Is there about 5 V?
YES
Repair an open in the wire between the climate control unit and the recirculation control motor.
NO
The RFD-P/FRD-P wire is OK. Replace the climate control unit .
