System Operation Check

Trouble shooting of a power window system complaint begins with verification of the customer problem. If problem occurs, go to step 3. If problem does not occur, go to next step.
If problem does not occur, review conditions under which problem occurred for customer and try to duplicate those conditions. For example, if the problem occurs on rainy days or during high humidity conditions, sprinkle water onto vehicle and see if malfunction occurs. DO NOT sprinkle water directly into engine compartment or onto electronic components. Visually inspect for signs of mechanical and electrical damage. Inspect for blown fuses and damaged relays. Inspect for loose or corroded connections, damaged wiring harnesses and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary.
Inspect the multiplex communication system and confirm that there is no trouble by the basic inspection and DTC check. See PRE-CHECK under SELF-DIAGNOSTIC under MULTIPLEX COMMUNICATION SYSTEM article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT.

Determine problem symptom. See PROBLEM SYMPTOM INDEX table.

PROBLEM SYMPTOM INDEX

Symptom

Suspected Area ⁽¹⁾

All Power Windows Do Not Operate

⁽²⁾

All Power Windows Do Not Operate (Power Door Lock System Normal)

⁽³⁾⁽⁴⁾

Only Driver's Window Does Not Operate

⁽³⁾⁽⁵⁾⁽⁶⁾⁽⁴⁾

Window Lock Function Does Not Operate

⁽³⁾

Window Does Not Operate With Power Window Master Switch (Manual Or Automatic Operation Can Be Performed)

⁽⁷⁾

Remove Control Of All Windows (Except Driver's) Does Not Function With Master Switch (Window Operates Normally With Each Of Master Switch)

⁽⁸⁾

Front Doors

Power Window Does Not Operate

⁽²⁾

Auto Up (Or Down) Function Does Not Operate

⁽²⁾

Jam Protection Function & Auto Up (Or Down) Function Does Not Operate

⁽⁹⁾⁽¹⁰⁾⁽²⁾

Rear Doors

Power Window Does Not Operate

⁽¹¹⁾⁽¹²⁾⁽¹³⁾

Auto Up (Or Down) Function Does Not Operate

⁽¹¹⁾⁽¹³⁾

Jam Protection Function & Auto Up (Or Down) Function Does Not Operate

⁽¹⁴⁾⁽¹⁵⁾⁽¹³⁾

⁽¹⁾	Perform test procedures in order listed under suspected area.

⁽²⁾	Check the appropriate front door ECU (driver door ECU with master switch or passenger door ECU with power window switch).

⁽³⁾	Check the power window master switch. See ONE TOUCH POWER WINDOW SYSTEM/CURRENT OF CIRCUIT under COMPONENT TESTS.

⁽⁴⁾	Check the wiring harness.

⁽⁵⁾	Check the power window switch. See POWER WINDOW SWITCH (PASSENGER & REAR) under COMPONENT TESTS.

⁽⁶⁾	Check the power window motor. See POWER WINDOW MOTOR (FRONT) under COMPONENT TESTS.

⁽⁷⁾	Go to TEST A: WINDOW MOVES DOWN DURING UP OPERATION under SYSTEM TESTS.

⁽⁸⁾	Go to TEST B: DOWN FUNCTION DOES NOT WORK THOUGH SOME OBJECTS ARE CAUGHT IN POWER WINDOW GLASS under SYSTEM TESTS.

⁽⁹⁾	Check the front door jam protection limit switch circuit. See JAM PROTECTION LIMIT SWITCH CIRCUIT (FRONT) under CIRCUIT TESTS.

⁽¹⁰⁾	Check the front door jam protection pulse switch circuit. See JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT) under CIRCUIT TESTS.

⁽¹¹⁾	Check the rear door power window switch circuit. See POWER WINDOW SWITCH CIRCUIT (REAR) under CIRCUIT TESTS.

⁽¹²⁾	Check the appropriate rear door power window motor. See POWER WINDOW MOTOR (REAR LEFT) or POWER WINDOW MOTOR (REAR RIGHT) under COMPONENT TESTS.

⁽¹³⁾	Check the appropriate rear door ECU.

⁽¹⁴⁾	Check the rear door jam protection limit switch. See JAM PROTECTION LIMIT SWITCH (REAR) under COMPONENT TESTS.

⁽¹⁵⁾	Check the rear door jam protection pulse switch. See JAM PROTECTION PULSE SWITCH (REAR) under COMPONENT TESTS.

Inspect the circuits of the power window system. See CIRCUIT TESTS .
After repairs have been completed, confirm that problem has been eliminated. Operate the system under same conditions recorded for original complaint. If problem is no longer present, repair has corrected problem. If problem is still present, further diagnosis and repair is required.