Transmission Control Module (TCM)

U0415-IMPLAUSIBLE DATA RECEIVED FROM ABS



Theory of Operation

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:
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.





Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. NAG1 Pre-Diagnostic Troubleshooting Procedure

1. CHECK FOR TIPM/FCM CAN BUS DTCS
1. With the scan tool, read TIPM/FCM DTCs.

Are there any TIPM/FCM CAN BUS DTCs present?

Yes

- Testing and Inspection Perform the appropriate test. Perform the diagnostic procedure for DTC U0001-CAN C BUS first if it is present U0001.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test

No

- Go To 2

2. CHECK IF ABS DTCS ARE PRESENT
1. With the scan tool, read ABS DTCs.

Are there any ABS DTCS present?

Yes

- Testing and Inspection Perform the appropriate test.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. 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 problems are found, replace the TCM. Transmission Control Module - Description
- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test