HINT
If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN
communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.
B -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
A -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
Up to 08/2009
2GR-FE ENGINE CONTROL: SFI SYSTEM: U0101: Lost Communication with TCM
U0101 - Lost Communication with TCM
DESCRIPTION
The Transmission Control Module (TCM) and ECM perform 2-way communication with each other via the Controller Area Network (CAN). The
TCM sends signals to the ECM concerning required engine speed, required engine torque, warning indicators in the combination meter, DTCs and
other data. The ECM sends signals to the TCM concerning engine speed, opening angle of the throttle valve, temperature of intake air, temperature
of engine coolant, engine torque and other data. If the TCM cannot communicate with the ECM, the TCM will conclude that there is a malfunction
in the CAN system, illuminate the MIL and set a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN
No comments:
Post a Comment