(e) Read the DTCs.
Result:
B -- REPLACE TCM See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and
Drivetrain/Relays and Modules - A/T/Control Module/Service and Repair/U660E Automatic Transaxle/Removal
A -- END
From 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
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