53672/33672

Cabin Temperature Sensor Fan - Testing

Fault Symptom.
Permanent: 53672*
Intermittent: 33672*

* NOTE: There is a chance that this diagnostic trouble code may have been generated erroneously. Start by erasing the diagnostic trouble code using the ISAT scan tool and start the car. If the diagnostic trouble code is again generated, proceed with fault diagnosis. If it is gone, no further action is required.

Conditions
Short circuit to ground (version 2.01).

Action
1. Disconnect the sensor and check voltage between pins 4 and 1 in the connector. Reading should be 11 - 12 V.

2. If voltage is correct, refit the connector and check if the motor is still not moving before fitting a new sensor Note that the resistance in the suction fan motor between sensor pins 4 and 1 should be about 230 Ohm.

3. If no voltage is detected when carrying out measurements in stage 1, unplug the ACC control module's 39 pin connector and check if there is an open circuit between pin 4 on the sensor connector and pin 30 on the ACC control module's 39 pin connector. Also check that pin 1 on the sensors connector has a good ground contact and that pin 4 on the sensor connector is NOT shorted to ground.

4. If there is no open circuit, refit connectors and check if the suction fan is still not moving before fitting a new ACC control module.