Toyota Tundra Service Manual: Fail-safe Chart

FAIL-SAFE CHART

1. POWER WINDOW OPERATION IN FAIL-SAFE MODE

HINT:

If the pulse sensor built into the power window regulator motor malfunctions, the power window control system enters fail-safe mode.

(a) The power window control system prohibits the following power window operation when the pulse sensor for the jam protection function has problems and the window position or the learned value is abnormal.

Power Window Control System

Power Window Operation

Ignition Switch ON

Key-Off

(Within Approximately 45 Seconds after Ignition Switch Turned Off)

Key-Off

(After Approximately 45 Seconds Elapsed after Ignition Switch Turned Off)

Manual UP

Operation prohibited

Operation prohibited

Operation prohibited

Manual DOWN

Operative

(Jam protection not operative)

Operation prohibited

Operation prohibited

AUTO UP

(hold switch at AUTO UP position)

Operative

(in MANUAL mode)

(Jam protection not operative)

Operation prohibited

Operation prohibited

AUTO UP

Operation prohibited

Operation prohibited

Operation prohibited

AUTO DOWN

Operation prohibited

Operation prohibited

Operation prohibited

HINT:

When the pulse sensor is normal, the AUTO UP/DOWN function can be resumed by deactivating fail-safe mode. To deactivate fail-safe mode, pull up the power window switch to the AUTO UP position and hold it for at least 1 second to fully close the window from the fully open position.

(b) If the LIN communication line malfunctions (communication stop), the power window control system prohibits the following operations.

Master Switch

Power Window Operation

Ignition Switch ON

MANUAL UP

Operative (Jam protection operative)

MANUAL DOWN

Operative (Jam protection not operative)

AUTO UP (hold switch at AUTO UP position)

-

AUTO UP

-

AUTO DOWN

-

HINT:

Remote up/down function does not operate.

Power Window Regulator Switch (for Front Passenger Side)

Power Window Operation

Ignition Switch ON

MANUAL UP

Operative (Jam protection operative)

MANUAL DOWN

Operative (Jam protection not operative)

AUTO UP (hold switch at AUTO UP position)

Operative (Jam protection operative)

AUTO UP

Operative (Jam protection operative)

AUTO DOWN

Operative (Jam protection not operative)

    Dtc Check / Clear

    How To Proceed With Troubleshooting

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