DTC P2640 (Flash Code 92) Torque Management Feedback Signal “A” High (AWR6B45)

1. DTC P2640 description

The TCM outputs torque request signals to the ECM via the CAN communication circuit in order to reduce shifting shock caused by engine torque during shifting. Based on the TCM signals, the ECM increases and decreases engine torque by controlling the fuel injection, etc. In addition, the TCM controls the line pressure at the same time, which can result in a reduction in shifting shock. When the actual vehicle acceleration exceeds the specified value for the torque-up request to the ECM, the TCM sets the DTC.

2. Condition for setting DTC P2640

Condition for running the DTC

  • The ignition switch is ON.
  • The battery voltage is 9.0 to 16.0 V.

Condition for setting the DTC

  • The TCM detects that the actual vehicle acceleration exceeds 0.2 G for the torque-up request to the ECM.

3. Action taken when DTC P2640 sets

  • The TCM flashes the check trans warning light. Refer to Action taken when DTC sets - Type C.

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".

  • The TCM cancels the torque request or engine speed request to the ECM.

4. Condition for clearing DTC P2640

  • Refer to Condition for clearing the check trans warning light/DTC - Type C.

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".

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