DTC Detection Condition

Trouble Area

ECM checks for an open or short in shift solenoid valve SL1. (1 trip detection logic)

• Output signal duty equal to 100%

Open or short in shift solenoid valve SL1 circuit

Shift solenoid valve SL1

2006 TRANSMISSION A750F Automatic Transaxle - Sequoia

• ECM

HINT:

SL1 output signal duty is less than 100% under normal

condition.

monitor description monitor description

This DTC indicates an open or short in the shift solenoid valve SL1 circuit. The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC. Also, the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.

While driving and shifting between 4th and 5th gears, if the ECM detects an open or short in the shift solenoid valve SL1 circuit, the ECM determines that there is a malfunction (See DIAGNOSIS SYSTEM ).

monitor strategy

MONITOR STRATEGY REFERENCE

Related DTCs

P0748: Shift solenoid valve SL1/Range check

Required sensors/Components

Shift solenoid valve SL1

Frequency of operation

Continuous

Duration

1 second

MIL operation

Immediate

Sequence of operation

None

typical enabling conditions typical enabling conditions

TYPICAL ENABLING CONDITIONS REFERENCE

The monitor will run whenever the following DTCs are not present.

None

Battery voltage

10 V or more

CPU commanded duty

Less than 75 %

Ignition switch

ON

Starter

OFF

typical malfunction thresholds typical malfunction thresholds

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