1. DTC P2729 description
Line pressure control solenoid (SLT) is installed on the valve body assembly and adjusts the line pressure required for clutch and brake. The TCM controls line pressure control solenoid (SLT) based on the information of the engine torque, etc. The TCM detects the energized state of line pressure control solenoid (SLT) based on the current of the high-side control circuit and low-side control circuit of line pressure control solenoid (SLT). If the line pressure control solenoid (SLT) circuit current is too low, the TCM determines this is due to an open circuit or a short to ground, and the DTC is set.
2. Condition for setting DTC P2729
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 an open circuit or a short to ground in the line pressure control solenoid (SLT) circuit.
3. Action taken when DTC P2729 sets
- The TCM flashes the check trans warning light. Refer to Action taken when DTC sets - Type A.
Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".
- The TCM inhibits the shift timing control.
- The TCM inhibits the lock-up timing control.
- The TCM inhibits the slip lock-up control.
- The TCM inhibits the garage control.
- The TCM inhibits the self-learning control.
- The TCM inhibits the engine torque control.
- The TCM inhibits the skip gear shift control.
- If the DTC is set in the reverse gear, the current gear position is retained.
- If the DTC is set while running, the current gear position is retained. If a solenoid malfunction is found while running in 6th gear, the gear is shifted to 5th.
- When the vehicle is stopped, the gear is shifted to 3rd.
4. Condition for clearing DTC P2729
- Refer to Condition for clearing the MIL, check trans warning light/DTC - Type A or Type B.
Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".