Code D: Evaporator Temperature Sensor
WARNING: This page is about a different car, the 1998 Acura 3.5RL. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
To avoid damage to sensor, use an ohmmeter with a measuring current of one milliamp or less.
- Disconnect evaporator temperature sensor connector. Measure sensor resistance at specified temperatures. See specifications in EVAPORATOR TEMPERATURE SENSOR RESISTANCE table under TESTING. If resistance is not as specified, replace sensor.
- If resistance is within specifications, remove climate control unit and disconnect 8-pin and 20-pin connectors. Check for continuity between ground and terminal No. 4 (Brown wire) of 20-pin connector. If continuity does exist, repair shorted Brown wire between climate control unit and evaporator temperature sensor.
- If continuity does not exist, check for continuity between terminal No. 4 (Brown wire) of 20-pin connector climate control unit connector and evaporator temperature sensor connector. If continuity does not exist, repair open Brown wire between climate control unit and evaporator temperature sensor.
- If continuity does exist, check for continuity in Pink/Blue wire between climate control unit connector and evaporator temperature sensor. If continuity does not exist, repair open Pink/Blue wire between climate control unit and evaporator temperature sensor.
- If continuity does exist, check for loose wires or poor connections at climate control unit 8-pin and 20-pin connectors and evaporator temperature sensor connector. If connections are okay, substitute known-good climate control unit and recheck. If symptom does not exist after substituting known-good climate control unit, replace original climate control unit.