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Power Liftgate Module






U0431 - Implausible Data Received From FCM

For a complete wiring diagram, refer to.

When Monitored: Whenever the battery is connected.

Set Condition: When the module receives mixed messages from the TIPM, this code will set.






Test Step 1 - DTC Present

With the scan tool, record and erase DTCs.

Cycle the ignition switch from On to Off.

Wait 30 seconds.

Turn the ignition ON.

With the scan tool, check for DTCs.

Does the scan tool display U0431 - Implausible Data Received From FCM?

No

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.

Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior

Yes

Go to Test Step 2 => [ Test Step 2 - Power Sliding Door Module ] U0431

Test Step 2 - Power Sliding Door Module

With the scan tool, check for DTCs in several other modules.

Does the scan tool display U0431 - Implausible Data Received From FCM in other modules?

No

Replace the power sliding door module.

Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior

Yes

Replace the TIPM.

Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior