Circuit/System Testing
- Measure the voltage at the battery terminals.
- With scan tool, read the battery voltage in the EBCM data list. Verify that battery terminal voltage, and battery voltage readings do not differ more than 1 volt.
- If more than 1 volt, test the ground circuit of the EBCM for high resistance. If the circuit test normal, test or replace the EBCM.
- Refer to Battery Inspection/Test or Charging System Test .