C2100

C2100-BATTERY VOLTAGE LOW





For a complete wiring diagram, refer to the wiring information .

- When Monitored:
With the ignition on.

- Set Condition:
If the Anti-Lock Brake System (ABS) Module detects system voltage is below 7.5 volts.





1. DTCS IN THE PCM

NOTE: This DTC must be active for the results of this test to be valid.

1. Turn the ignition on.
2. With the scan tool, read and record DTCs from the PCM.
3. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
4. With the scan tool, erase DTCs.
5. Start the engine.
6. With the scan tool, read and record DTCs.
7. With the scan tool read DTCs from the PCM.

Are any charging system DTCs present?

Yes

- Repair the charging system DTCs. Testing and Inspection.

No

- Go To 2

2. CHARGING SYSTEM FAILURE
1. Start the engine.
2. Connect voltmeter to vehicle battery.

Is the vehicle battery voltage under 8.2 volts?

No

- Go To 3

Yes

- Repair the charging system.
- Perform ABS VERIFICATION TEST. ABS Verification Test.

3. CHARGING POWER SUPPLY VOLTAGE
1. With a scan tool read Power Supply Voltage.

Is Power Supply Voltage under 8.2 volts?

No

- Perform the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test.

Yes

- Replace the Anti-Lock Brake System (ABS) Module.
- Perform ABS VERIFICATION TEST ABS Verification Test.