Heating

DTC Troubleshooting (cont'd)

21-32  

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

HEATER CONTROL PANEL 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 heater control panel connector A (14P) and B (22P) at the evaporator temperature sensor 2P connector. If the connections are good, substitute a known-good heater control panel and recheck. If the symptom/indication goes away, replace the original heater control panel.

NO - Repair open in the wire between the heater control panel and the evaporator temperature sensor.

5-door KE Model

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 21-31).

Is the resistance within the specifications shown on the graph?

YES - Go to step 3.

NO - Replace the evaporator temperature sensor.

  1. Disconnect heater control panel connector B (22P).
  2. Check for continuity between the No. 7 terminal of heater control panel connector B (22P) and body ground.

HEATER CONTROL PANEL CONNECTOR B (22P)

Wire side of female terminals

Is there continuity?

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

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