Component Inspection
- Substitute with a known-good the battery sensor.
- Turn off the ignition switch.
- Connect the GDS and go to "Current Data".
- Clear DTC and Test-drive under the enable conditions.
- After the road test, check the "DTC".
- Is the DTC "U04B100" displayed again?
YES
- Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Replace the battery sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.