B2982

DTC B2982 or BUS communication error is indicated: Climate Control Unit Lost Communication with Each Control Motor

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF and then ON (II).
3. Do the self-diagnostic with the HDS or climate control unit.
4. Check for DTCs.

Is DTC B2982 or BUS communication error indicated?

YES - Go to step 5.

NO - Intermittent failure, check for loose wires or poor connections on the each control motor circuit.

5. Turn the ignition switch OFF.
6. Test the driver's air mix control motor, passenger's air mix control motor, driver's cool vent control motor, passenger's cool vent control motor, mode control motor, recirculation control motor, and rear vent control motor.

Is each control motor OK?

YES - Check for loose wires or poor connections at the climate control unit 40P connector and at the each control motor 5P connector. If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit. If the symptom/indication continues, replace the A/C wire harness.

NO - Replace the control motor with a problem.