U144B

U144B-IMPLAUSIBLE ACTUAL AXLE TORQUE DATA RECEIVED





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

Theory of Operation

The HCP Module sends vehicle speed information over the CAN Bus circuit to the PCM.

- When Monitored:
Ignition run time is greater than one second. Battery voltage between 9 and 16 volts. Engine run time is greater than 10 seconds

- Set Condition:
The PCM receives an implausible signal message from the Hybrid Control Processor (HCP). The circuit is continuously monitored. One trip fault.





WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury

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

1. ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.

Is the U144B-Implausible Actual Axle Torque Data Received active at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

2. U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT IS ACTIVE
1. Continue reading DTCs.

Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE at this time?

Yes

- U0001 Perform the U0001-No Communication on the CAN C BUS circuit diagnostic procedure.

No

- Go To 3

3. HCP MODULE IS ACTIVE ON THE CAN BUS
1. With the scan tool, select ECU View.
2. Verify that the HCP Module active on the bus.

Is the HCP Module active on the bus?

Yes

- Go To 4

No

- Perform the No Response from HCP diagnostic procedure.

4. ACTIVE DTCS IN THE FCM
1. With the scan tool, select ECU View and select FCM.
2. With the scan tool, View Active DTCs.

Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE in the FCM at this time?

Yes

- Replace the HCP Module.
- Perform the TPIM VERIFICATION TEST. .

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.