U1424

U1424-IMPLAUSIBLE ENGINE TORQUE SIGNAL RECEIVED

For a complete wiring diagram Refer to Diagrams/Electrical. Electrical Diagrams


Theory of Operation


The Transmission Control Module request from the ECM/PCM to change the torque of the engine to avoid possible damage to the transmission.


- When Monitored:

Ignition on with system voltage between 9.0 and 16 volts.


No PCM/ECM CAN Bus DTCs present.

- Set Condition:

When the TCM receives an implausible engine torque signal from the PCM over the CAN Bus for a period of 1.0 second.







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



Diagnostic Test


1. CHECK IF THE DTC IS ACTIVE

With the scan tool, read Transmission DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 5



2. CHECK FOR FCM/TIPM CAN BUS DTCS

With the scan tool, read FCM/TIPM DTCs.

Are there any FCM/TIPM CAN BUS DTCs present?

Yes

- Refer to Communications and perform the appropriate symptom(s).
- Perform CVT VERIFICATION TEST. Verification Tests

No

- Go To 3



3. CHECK IF ENGINE DTCS ARE PRESENT

With the scan tool, read engine DTCs.

Are there any engine DTCs present?

Yes

- Perform CVT VERIFICATION TEST. Verification Tests

No

- Go To 4



4. CHECK THE PCM

Replace and program the PCM.

Perform CVT VERIFICATION TEST. Verification Tests

Does the DTC reset?

Yes

- Using the schematics as a guide, check the Transmission Control Module (TCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM.
- Perform CVT VERIFICATION TEST. Verification Tests

No

- Test Complete.



5. INTERMITTENT WIRING AND CONNECTORS

The conditions necessary to set this DTC are not present at this time.

Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

Wiggle the wires while checking for shorted and open circuits.

Were there any problems found?

Yes

- Repair as necessary.
- Perform CVT VERIFICATION TEST. Verification Tests

No

- Test Complete.