C2101

C2101-BATTERY VOLTAGE HIGH

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on.

- Set Condition:
If the Anti-Lock Brakes Module detects system voltage is above 17 volts.





Diagnostic Test

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 ECM/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 ECM/PCM.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go to 2


2. CHARGING SYSTEM FAILURE
Start the engine.
Connect voltmeter to vehicle battery.
Is the vehicle battery voltage over 16.8 volts?

No

- Go to 3

Yes

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

3. CHARGING POWER SUPPLY VOLTAGE

With a scan tool read Power Supply Voltage.
Is Power Supply Voltage over 16.8 volts?

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
- Perform ABS VERIFICATION TEST. ABS Verification Test.

Yes

- Replace the Anti-Lock Brakes Module.
- Perform ABS VERIFICATION TEST. ABS Verification Test.