## Climate Control

#### DTC Troubleshooting (cont'd)

21-127

6. Check for continuity between the No. 2 terminal of climate control unit connector A (14P) and the No. 1 terminal of the evaporator temperature sensor 2P connector.

CLIMATE CONTROL UNIT CONNECTOR A (14P)

Wire side of female terminals

EVAPORATOR TEMPERATURE SENSOR 2P CONNECTOR

Wire side of female terminals

Is there continuity?

YES - Check for loose wires or poor connections at climate control unit connectors A (14P) and B (22P) and at the evaporator temperature sensor 2P connector. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit.

NO - Repair open in the wire between the climate control unit and the evaporator temperature sensor.

4-door

DTC 15: A Short in the Evaporator Temperature Sensor Circuit

1. Disconnect the evaporator temperature sensor 2P connector.
2. Test the evaporator temperature sensor (see step 2 on page 21-126).

Is the resistance within the specifications shown on the graph?

YES - Go to step 3.

NO - Replace the evaporator temperature sensor.

3. Disconnect climate control unit connector B (22P).
4. Check for continuity between the No. 7 terminal of climate control unit connector B (22P) and body ground.

CLIMATE CONTROL UNIT CONNECTOR B (22P)

Wire side of female terminals

Is there continuity?

YES - Repair short to body ground in the wire between the climate control unit and the evaporator temperature sensor.

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