Code B: Outside Air 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.
- Remove outside air temperature sensor. See procedures in OUTSIDE AIR TEMPERATURE SENSOR R & I . Measure resistance across sensor terminals. See OUTSIDE AIR 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. Measure resistance between ground and terminal No. 5 (Brown/White wire) of climate control unit 20-pin connector. See Figure . If resistance is less than 10 ohms, repair short in wire between climate control unit, outside air temperature sensor, and gauge assembly, or check gauge assembly.
- If resistance is greater than 10 ohms, check for continuity between terminal No. 5 (Brown/White wire) of climate control unit 20-pin connector and outside air temperature sensor. If continuity does not exist, repair open Brown/White wire between climate control unit and outside air temperature sensor.
- If continuity does exist, check for continuity in Pink/Blue wire between climate control unit 8-pin connector and outside air temperature sensor. If continuity does not exist, repair open Pink/Blue wire between climate control unit and outside air temperature sensor.
- If continuity does exist, check for loose wires or poor connections at climate control unit 8-pin and 20-pin connectors and outside air 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.