Check for a loose wire or poor connection at climate control unit connector A (40P). If the connection is good, substitute a known-good climate
control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit See: Heating and Air
Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
23. While measuring the voltage as described in step 22, reconnect these items individually and note the voltage reading each time:
- Driver's air mix control motor
- Passenger's air mix control motor
- Rear air mix control motor
- Humidity/in-car temperature sensor
- A/C pressure sensor
Does the voltage remain at about 5 V?
YES -
Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit See:
Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
NO -
Replace the component that caused the voltage drop.?
B2983
DTC Troubleshooting: B2983 (K and MODE)
DTC B2983 or DTC indicator K and MODE:
A Problem in the Recirculation Control Linkage, Door, or Motor Circuit
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Do the self-diagnostic function with the HDS or the climate control unit.
4. Check for DTCs.
Is DTC B2983 or K and MODE indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for loose wires or poor connections in the recirculation control motor circuit.?
5. Turn the ignition switch to LOCK (0).
6. Test the recirculation control motor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/Recirculation Control Motor Test.
Is the recirculation control motor OK?
