Circuit/System Testing

B1516 08 

1. Ignition OFF, disconnect the battery current sensor.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal B and ground.
   • If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal A and ground.
   • If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, then replace the BCM.
   • If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, then replace the BCM.
4. Ignition ON, test for 4.8-5.2 volts between the signal circuit terminal C and ground.
   • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
   • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
5. If all circuits test normal, replace the battery current sensor.

B1516 66 

1. Verify that the battery current sensor is installed securely around the negative battery cable, and positioned with the tape tab pointing away from the negative terminal of the battery and toward the chassis ground.
   • If the battery current sensor is not installed correctly, remove and reinstall the sensor.
2. Replace the battery current sensor.