C2100

C2100-BATTERY VOLTAGE LOW

For a complete wiring diagram Refer to Diagrams/Electrical. Electrical Diagrams


- When Monitored:

With the ignition on.

- Set Condition:

If the Anti-Lock Brakes Module detects system voltage is below 9.5 volts.







Diagnostic Test


1. DTCS IN THE PCM

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

Turn the ignition on.

With the scan tool, read and record DTCs from the PCM.

With the scan tool, read and record Freeze Frame information.

With the scan tool, erase DTCs.

Start the engine.

With the scan tool, read and record DTCs.

With the scan tool read DTCs from the PCM.

Are any charging system codes present?

Yes

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

No

- Go To 2


2. CHARGING SYSTEM FAILURE

Start the engine.

Connect voltmeter to vehicle battery.

Is the vehicle battery voltage under 8.2 volts?

No

- Perform the ABS Intermittent Condition diagnostic procedure. ABS Intermittent Condition Test
- Refer to the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test

Yes

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