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