B2129

B2129-16-PTS DISPLAY SUPPLY VOLTAGE-CIRCUIT VOLTAGE BELOW THRESHOLD





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

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

- Set Condition:
Park Assist Sensor Display voltage less than 8.0 volts.





1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With 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. CHECK PARK ASSIST DISPLAY FOR AN INTERNAL SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Park Assist Display Module harness connector.
3. Turn the ignition on.
4. With the scan tool, record and erase Park Assist Module DTCs.
5. Wait 30 seconds.
6. With the scan tool, read Park Assist Module DTCs.

Is this DTC still active?

Yes

- Go To 3

No

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

3. CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR A SHORT GROUND




1. Using a 12-volt test light connected to 12-volts check the (X777) Park Assist Display Supply circuit.

Does the test light illuminate brightly?

Yes

- Repair the (X777) Park Assist Display Supply circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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