U140D Implausible wheel speed signals received
U140D code - The messages sent on the Can bus are distinguished by an identifier (ID). Each CAN ID is defined to contain a certain number of bytes. The transmission control module (TCM) verifies that it has received the proper number of bytes for each ID.
When monitored this DTC continuously with the ignition on, one valid Can ID received at least once, and no U0002 Can bus off performance DTC present. Set condition when the TCM detects an incorrect Can ID from the ABS control module.
Possible cause U140D code:
- TIPM Can Bus DTCs Present
- ABS Control Module DTCs Present
- Transmission control Module
Diagnostic test U140D code
Step 1. Check for TIPM Can Bus DTCs present ?
With the scan tool, read TIPM DTCs.
Are there any TIPM Can Bus DTCs present ?
Yes, refer to totally integrated power (TIPM) diagnosis and testing for diagnostic procedures and other possible cause. Perform NAG1 Transmission Verification Test.
No, go to step 2.
Step 2. Check If ABS DTCs are present
With the scan tool, read ABS DTCs present ?
Yes, perform NAG1 Transmission Verification Test.
No, using the schematics as a guide, check the transmission control module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problem are found replace the TCM in accordance with the service information. Perform NAG1 Transmission Verification Test.
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