( TL19E00K733000Y2983FAAT00 )

DTC Troubleshooting: B2983 (M and A/C ON)

DTC B2983 or DTC indicator M and A/C ON:
A problem in the Recirculation Control Linkage, Door, or Motor Circuit

1. Clear the DTC with the HDS.

1. Turn the ignition switch to LOCK (0) and then to ON (II).

1. Do the self-diagnostic function with the HDS or the heater control unit.

1. Check the DTCs.

Is DTC B2983 or M and A/C ON indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure; check for loose wires or poor connections on the recirculation control motor circuit.■

1. Turn the ignition switch to LOCK (0).

1. Test the recirculation control motor.

Is the recirculation control motor OK?

YES | - | Go to Step 7 .
NO | - | Replace the recirculation control motor, or repair the recirculation control linkage or door.■

1. Disconnect the recirculation control motor 7P connector.

1. Disconnect heater control unit connector A (28P).

1. Check for continuity between the following terminals of heater control unit connector A (28P) and the recirculation control motor 7P connector.

   28P: | 7P:
   --- | ---
   No. 3 | No. 1
   No. 5 | No. 2

Is there continuity?

YES | - | Go to Step 10 .
NO | - | Repair open in the wire(s) between the heater control unit and the recirculation control motor.■