B21DD-17

B21DD-17-SYSTEM VOLTAGE-CIRCUIT VOLTAGE ABOVE THRESHOLD

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
While the vehicle is in reverse for speeds less than 16km/h (10 mph).

- Set Condition:
Vehicle System voltage greater than 16.0 Volts.





1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. Using the scan tool, read Park Assist Module DTCs.

Is this DTC active?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded or contaminated terminals.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. VERIFY OPERATION OF THE VEHICLE CHARGING SYSTEM

NOTE: Troubleshoot any PCM or ECM charging/cranking DTCs before proceeding.

NOTE: Make sure the battery is fully charged.

Are any charging system DTCs present?

Yes

- For gas engine applications, Testing and Inspection Perform the appropriate charging system or battery diagnostic procedure.
- For diesel engine applications, Testing and Inspection Perform the appropriate charging system or battery diagnostic procedure.

No

- Replace the Park Assist Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.