NO -
Intermittent failure, check for a loose wire or poor connection in the climate control unit connector A (40P).?
6. Check for DTCs with the HDS.
Are any of the following DTCs indicated; B1005, B1959, B2162 or B1158 indicated?
YES -
Do the relay control module input test See: Power and Ground Distribution/Testing and Inspection/Relay Control Module Input Test.?
NO -
Do the climate control unit troubleshooting See: Heating and Air Conditioning/Control Assembly/Testing and Inspection.?
B2979
DTC Troubleshooting: B2979 (B and WINDSHIELD DEFROST)
DTC B2979 or DTC indicator B and WINDSHIELD DEFROST:
An Open in the A/C Pressure Sensor 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 B2979 or B and WINDSHIELD DEFROST indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for loose wires or poor connections in the A/C pressure sensor circuit.?
5. Turn the ignition switch to LOCK (0).
6. Disconnect the A/C pressure sensor 3P connector.
7. Disconnect climate control unit connector A (40P).
8. Check for continuity between the following terminals of climate control unit connector A (40P) and the A/C pressure sensor 3P connector.
