B2980

DTC B2980 or PRE sensor short is indicated: A short in the A/C Pressure Sensor 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 B2980 or PRE sensor short indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Turn the ignition switch OFF.
6. Disconnect the A/C pressure sensor 3P connector.
7. Disconnect the climate control unit 40P connector.




8. Check for continuity between body ground and the climate control unit 40P connector terminals No. 12 and No. 14 individually.

Is there continuity?

YES - Repair short to body ground in the wire(s) between the climate control unit and the A/C pressure sensor.

NO - Go to step 9.




9. Check for continuity between the climate control unit 40P connector terminals as follows.

Is there continuity between any of the terminals?

YES - Repair the short in the wires.

NO - Go to step 10.

10. Check for proper A/C system pressure.

Is the pressure within specifications?

YES - Replace the A/C pressure sensor. If the symptom/indication continues, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.

NO - Repair the A/C pressure problem.