C2101

C2101-BATTERY VOLTAGE HIGH



- When Monitored:
With the ignition on.

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





1. CHARGING SYSTEM DTC PRESENT

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 ECM/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 codes present?

Yes

- Perform the appropriate Charging System DTC in the ECM/PCM 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 over 16.8 volts?

No

- Go To 3

Yes

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

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

Is Power Supply Voltage over 16.8 volts?

No

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

Yes

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