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 to LOCK (0), and then turn to 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 to LOCK (0).
7. Disconnect the A/C compressor clutch 3P connector.
8. Connect the A/C compressor clutch 3P connector No. 1 and No. 3 terminals 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 No. 1 and No. 3 terminals, and check the A/C compressor clutch and the thermal protector.

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) No. 11 and No. 12 terminals 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.