Event 42A2

EVENT 42A2-OVERVOLTAGE

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Vehicle speeds above 6 km/h (3.4 mph).

- Set Condition:
Voltage is greater than 16.8 volts for longer than 500 ms.





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 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 the POWERTRAIN VERIFICATION TEST. Verification Tests.

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. Verification Tests.

3. CHARGING POWER SUPPLY VOLTAGE

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

No

- Perform ABS VERIFICATION TEST. Verification Tests.

Yes

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