B1313

Coolant temperature sensor, shorted to battery positive voltage

Fault symptom
The temperature gauge needle is at the bottom position.

The radiator fan runs continuously.

Action
1 Unplug the engine temperature sensor connector. Switch on the ignition and measure the voltage between pin 1 on the connector and ground.

The voltage should be about 1 V.

If the voltage is higher, unplug the connector from the control module and repeat the measurement.

If there is voltage, investigate the lead for short circuit to battery positive voltage.
2 If the fault remains, proceed to "Action Before Changing A Control Module".