L and FRESH

DTC Troubleshooting: B2993 or Indicator L and FRESH

DTC B2993 or DTC indicator L and FRESH: A Short in the Thermal Protector Circuit

1. Clear the DTC with the HDS.

2. Turn the ignition switch to LOCK (0), and then turn to ON (II).

3. Do the self-diagnostic with the HDS Initial Inspection and Diagnostic Overview or climate control unit. Initial Inspection and Diagnostic Overview

4. Check for DTCs.

Is DTC B2993 or L and FRESH indicated?
YES - Go to step 5.

NO - Intermittent failure. Check for loose wires or poor connections on the thermal protector circuit.


5. Clear the DTC with the HDS.

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

7. Disconnect the A/C compressor clutch 3P connector.

8. Connect the A/C compressor clutch 3P connector terminals No. 1 and No. 3 with a jumper wire.






9. Start the engine, and turn on the A/C.

10. Check for DTCs using the HDS or self-diagnostic.

Is DTC B2993 or L and FRESH indicated?
YES - Go to step 11.

NO - Check the A/C compressor clutch Testing and Inspection and the thermal protector. Testing and Inspection


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

12. Disconnect the jumper wire.

13. Disconnect climate control unit connector B (16P).

14. Check for continuity between body ground and climate control unit connector B (16P) terminals No. 11 and No. 12 individually.

Is there continuity?
YES - Repair short to body ground in the wire(s) between the climate control unit and the A/C compressor.

NO - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit. Climate Control Unit Removal/Installation