Toyota Avalon V6-3.5L (2GR-FE) P Code Page 2064

Toyota Avalon V6-3.5L (2GR-FE) P Code Page 2064

U660E Automatic Transaxle (from 12/2010)

U660E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0748: Pressure Control Solenoid "A" Electrical (Shift

Solenoid Valve SL1)

P0748 - Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1)

DESCRIPTION

Shifting from 1st to 6th is performed in combination with "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, SL3, SL4 and SL which

is controlled by the TCM. If an open or short circuit occurs in any of the shift solenoid valves, the TCM controls the remaining normal shift solenoid

valves to allow the vehicle to be operated smoothly See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Initial

Inspection and Diagnostic Overview/Fail-Safe Chart.

MONITOR DESCRIPTION

This DTC indicates an open or short in the shift solenoid valve SL1 circuit. The TCM causes gear shifts to occur by turning the shift solenoid valves

on or off. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem and illuminates the MIL and stores

the DTC. The TCM also performs the fail-safe function and turns the other normal shift solenoid valves on or off. (In case of an open or short

circuit, the TCM stops sending current to the circuit.)

While driving and shifting between 4th and 5th gears, if the TCM detects an open or short in the shift solenoid valve SL1 circuit, the TCM

determines there is a malfunction See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Initial Inspection and

Diagnostic Overview/Fail-Safe Chart.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

All

Condition (A)

Condition (B)

TYPICAL MALFUNCTION THRESHOLDS

When one of the following conditions is met: Condition (A) or (B)