Circuit/System Testing: Notes
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
B1516 08
- Ignition OFF, disconnect the harness connector at the battery current sensor.
- Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal B and ground.
- If greater than the specified range, test the low reference circuit for an open/high. If the circuit tests normal, replace the BCM.
- Ignition ON, test for 5 volts between the battery current sensor supply voltage circuit terminal A and ground.
- If less than the specified range, test the battery current sensor supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
- Test for 5 volts between the battery current sensor signal circuit and ground.
- If less than 5 volts, test the battery current sensor signal circuit terminal C for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
- If all circuits test normal, test or replace the battery current sensor.