B2993

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 OFF, and then ON (II).
3. Do the self-diagnostic with the HDS or climate control unit.
4. Check for DTCs.

Is DTC B2993 or L and FRESH indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Clear the DTC with the HDS.
6. Turn the ignition switch OFF.
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 for short to the wires between the A/C compressor clutch 3P connector female terminals No. 1 and No. 3, and check the A/C compressor clutch and the thermal protector.

11. Turn the ignition switch OFF.
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.