Park Assist Module (PAM)

U0401-00-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM

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

- When Monitored:
Park Assist Module supply voltage between 9-16 volts. Ignition in Run/Start.

- Set Condition:
Incorrect data received from Powertrain Control Module (PCM).





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

Does the scan tool display this DTC as 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 PCM IS ACTIVE ON THE CAN BUS
1. With the scan tool, select ECU View.
2. Verify that the PCM is active on the bus.

Is the PCM active on the bus?

Yes

- Go To 3

No

- Perform the No Response from PCM diagnostic procedure. No Response From PCM (Powertrain Control Module)
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. DTCS STORED OR ACTIVE IN THE PCM
1. With the scan tool, read PCM DTCs.

Are any DTCs active or stored in the PCM?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

No

- Go To 4

4. ACTIVE COMMUNICATION DTCS IN THE BCM
1. With the scan tool, select ECU View and select BCM.
2. With the scan tool, read active DTCs.

Are any Communication DTCs active in the BCM?

Yes

- Perform the appropriate diagnostic procedure. Testing and Inspection

No

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