( TL19E00G10100012101FAAT00 )

A/C Signal Circuit Troubleshooting

1. Measure the evaporator temperature sensor resistance between climate control unit connector A (28P) No. 23 terminal and connector B (12P) No. 10 terminal.

Is the resistance less than 24 kΩ?

YES | - | Check for loose wires or poor connections at climate control unit connectors. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom goes away, replace the original climate control unit .■
NO | - | Test the evaporator temperature sensor. ■

1. Disconnect the A/C compressor 3P connector.