B2993

DTC B2993 or DTC indicator T: A Short in the Thermal Protector Circuit

1. Clear the DTC by turning the ignition switch OFF, and then start the engine.
2. Operate the climate control system in several modes.
3. Check for DTCs using the HDS or self-diagnostic.

Is DTC B2993 or T indicated?

YES - Go to step 4.

NO - Intermittent failure.

4. Turn the ignition switch OFF.
5. Disconnect the A/C compressor clutch 3P connector.




6. Connect the A/C compressor clutch 3P connector terminals No. 1 and No. 3 with a jumper wire.
7. Start the engine, and turn on the A/C.
8. Check for DTCs using the HDS or self-diagnostic.

Is DTC B2993 or T indicated?

YES - Go to step 9.

NO - Check for a short to the wire(s) 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.

9. Turn the ignition switch OFF.
10. Disconnect the jumper wire.
11. Disconnect audio-HVAC display panel connector A (22P).




12. Check for continuity between body ground and audio-HVAC display panel connector A (22P) terminals No. 3 and No. 4 individually.

Is there continuity?

YES - Repair any short to body ground in the wire(s) between the audio-HVAC display panel and the A/C compressor.

NO - Substitute a known-good audio-HVAC display panel, and recheck. If the symptom/indication goes away, replace the original audio-HVAC display panel.