Circuit/System Testing
- Vehicle ON, verify that no K1 14V power module or B18 battery current sensor DTCs are set that would cause a charging system concern.
- Vehicle OFF, measure the voltage across the battery terminals. The voltage should read 12.4 V or greater at room temperature.
- Connect a carbon pile tester to the C1 battery.
- Vehicle ON, turn all accessories off. Observe the voltage reading on the tester. The voltage should read between 12.6-15.5V.
- Adjust the carbon pile tester so that the 12V current on the 14V power module data list is reading 160 amps. The voltage reading should remain between 12.6-15.5V.
- If not within the specified value, replace the K1 14V power module.