Toyota 4Runner: All Power Windows do not Operate with Driver Side Door Key Cylinder or Wireless Transmitter

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / All Power Windows do not Operate with Driver Side Door Key Cylinder or Wireless Transmitter

DESCRIPTION

When a key switch is pushed: 1) the door control receiver receives the key signal; 2) the door control receiver sends a signal to the certification ECU; 3) the main body ECU (multiplex network body ECU) sends the operation permission signal to the power window regulator motors; and 4) the power window regulator motor assemblies are activated.
When the driver door key cylinder (key-linked switch) is turned: 1) the door lock motor receives the signal; 2) the main body ECU (multiplex network body ECU) sends the signal to the power window regulator motors; and 3) the power window regulator motor assemblies are activated.

CAUTION / NOTICE / HINT

HINT:

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

PROCEDURE

1.	CHECK BASIC FUNCTION (WIRELESS AND POWER DOOR LOCK CONTROL SYSTEM)

(a) Check that the wireless transmitter (See page ) and driver door key cylinder (key-linked switch)
(See page ) lock and unlock all the doors normally.

Result

Result	Proceed to
Transmitter and driver door key cylinder operate normally	A
Transmitter does not operate normally (w/ Smart Key System)	B
Transmitter does not operate normally (w/o Smart Key System)	C
Driver door key cylinder does not operate normally	D

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key System)

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System)

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table)

2.	CHECK MANUAL UP/DOWN FUNCTION

(a) Check that the manual up/down function using the multiplex network master switch and power window regulator switches can operate all the power windows (See page ).

OK:

Manual up/down function is normal.

GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table)

3.	CHECK REMOTE UP/DOWN FUNCTION

(a) Check that the remote up/down function using the multiplex network master switch operates the power windows (See page ).

OK:

Remote up/down function is normal.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table)

Rear Power Window RH Auto Up / Down Function does not Operate with Rear Power Window Switch RH

DESCRIPTION If the auto up/down function does not operate, the cause may be one or more of the following: The ECU in the power window regulator motor determines that the power window re ...

Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION When the front doors are closed, each power window regulator motor can control its power window operation for approximately 43 seconds after the ignition switch is turned f ...

Other materials about Toyota 4Runner:

License Plate Light Assembly
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE OUTSIDE BACK DOOR GARNISH (a) Remove the outside back door garnish (See page ). 2. REMOVE LICENSE PLATE LIGHT ASSEMBLY (a) Remove the 4 screws and light. ...

Diagnosis System
DIAGNOSIS SYSTEM 1. SYMPTOM SIMULATION HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of the same or similar conditions and environment in ...