Testing

Battery Temperature Sensor Location:

To perform a complete test of this sensor and its circuitry, refer to the appropriate Powertrain Diagnostic Procedures. To test the sensor only, refer to the following:
1. The sensor is located under the battery and is attached to the battery tray. The engine wiring harness plugs directly into the bottom the sensor
2. Remove sensor and disconnect it from engine harness. Refer to Battery Temperature Sensor Removal/Installation.
3. Attach ohmmeter leads to wire terminals at bottom of sensor.
4. At room temperature of 25°C (75-80°F), an ohmmeter reading of 9,000 (9K) to 11,000 (11K) ohms should be observed.
5. If reading is above or below specification, replace sensor.

On-board Diagnostic Test For Charging System
The Powertrain Control Module (PCM) monitors critical input and output circuits of the charging system, making sure they are operational. A Diagnostic Trouble Code (DTC) is assigned to each input and output circuit monitored by the On-Board Diagnostic (OBD) system. Some circuits are checked continuously and some are checked only under certain conditions.