C2100

C2100-BATTERY VOLTAGE LOW






When Monitored:

Vehicle speeds above 6 km/h (3.4 mph).

Set Condition:

Voltage is less than 8.2 volts for longer than 20 mSec at vehicle speeds above 6 km/h (3.4 mph).






1. DTC's IN THE PCM

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

NOTE: Light will be on and not set a DTC when battery voltage is below 9.3 volts and no wheel speed

Turn the ignition on.
With the scan tool read and record DTC's from the PCM.
With the scan tool read and record Freeze Frame information.
With the scan tool erase DTC's.
Start the engine.
Road test the vehicle over 6 km/h (3.4 mph).

NOTE: Vehicle must be driven above 6 km/h (3.4 mph) for set conditions to be meet

With the scan tool, read and record DTC's.
With the scan tool read DTC's from the PCM.

Are any charging system codes present?

Yes

- Repair the charging system DTC in the PCM.
- Perform ABS VERIFICATION TEST VER 1.

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

- Go To 3

Yes

- Repair the charging system.
- Perform ABS VERIFICATION TEST - VER 1.

3. CHARGING POWER SUPPLY VOLTAGE

With a scan tool read Power Supply Voltage.

Is Power Supply Voltage under 8.2 volts?

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
- Perform ABS VERIFICATION TEST VER 1.

Yes

- Replace the Anti-Lock Brakes Module.
- Perform ABS VERIFICATION TEST - VER 1.