C1102

DTC C1102 BATTERY VOLTAGE LOW

COMPONENT LOCATION
Refer to DTC C1101. C1101

GENERAL DESCRIPTION
The ABS ECU(Electronic Control Unit) checks the battery voltage to determine, as a safety issue, whether the ABS system can operate normally or not. The normal battery voltage range is essential for controlling the ABS system as intended.

DTC DESCRIPTION
The ABS ECU monitors the battery voltage by reading the value of voltage. When the voltage is lower than the expected normal value, this code is set. The ABS functions are prohibited and the EBD function is allowed on LOW VOLTAGE CONDITION, the ABS/EBD functions are prohibited on UNDER VOLTAGE CONDITION. If the voltage recovers, to within normal operating ranges then the controller returns to normal operations as well.

DTC DETECTING CONDITION





TERMINAL AND CONNECTOR INSPECTION
Refer to DTC C1101. C1101

POWER CIRCUIT INSPECTION
1. Ignition "OFF"
2. Disconnect HECU connector.
3. Ignition "ON" & Engine "OFF".
4. Measure voltage between terminal "4" of the HECU harness connector and chassis ground.





5. Is the measured voltage within specifications?

YES
> Go to "Ground Circuit Inspection" procedure.

NO
> Check for damaged harness and poor connection between the battery terminal(+) and terminal "4" of the HECU harness connector. Check for open or blown 10A ABS fuse. Repair as necessary and then go to "Verification of vehicle Repair" procedure.

GROUND CIRCUIT INSPECTION
Refer to DTC C1101. C1101

COMPONENT INSPECTION
Refer to DTC C1101. C1101

VERIFICATION OF VEHICLE REPAIR
Refer to DTC C1101. C1101