Toyota 4Runner: Problem Symptoms Table

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Power Window Control System

Symptom	Suspected Area	See page
Power window does not operate at all	Main body ECU (Multiplex network body ECU)
Power window does not operate at all	Driver side junction block assembly	-
Remote up/down function does not operate	Proceed to "Remote Up/Down Function does not Operate"
Driver side power window does not operate with power window master switch	Proceed to "Driver Side Power Window does not Operate with Power Window Master Switch"
Front passenger side power window does not operate with front passenger side power window switch	Proceed to "Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch"
Rear power window LH does not operate with rear power window switch LH	Proceed to "Rear Power Window LH does not Operate with Rear Power Window Switch LH"
Rear power window RH does not operate with rear power window switch RH	Proceed to "Rear Power Window RH does not Operate with Rear Power Window Switch RH"
Driver side power window auto up/down function does not operate with power window master switch	Proceed to "Driver Side Power Window Auto Up/Down Function does not Operate with Power Window Master Switch"
Front passenger side power window auto up/down function does not operate with front passenger side power window switch	Proceed to "Front Passenger Side Power Window Auto Up/Down Function does not Operate with Front Passenger Side Power Window Switch"
Rear power window LH auto up/down function does not operate with rear power window switch LH	Proceed to "Rear Power Window LH Auto Up/Down Function does not Operate with Rear Power Window Switch LH"
Rear power window RH auto up/down function does not operate with rear power window switch RH	Proceed to "Rear Power Window RH Auto Up/Down Function does not Operate with Rear Power Window Switch RH"
Power windows do not operate with driver side door key cylinder	Proceed to "Power Door Lock Control System"
	Main body ECU (multiplex network body ECU)
	Driver side junction block assembly	-
Power windows do not operate with wireless transmitter	Proceed to "Wireless door lock control system (w/ Smart Key System)"
	Proceed to "Wireless door lock control system (w/o Smart Key System)"
	Main body ECU (multiplex network body ECU)
	Driver side junction block assembly	-
Key-off operation function operates even if operating conditions are not satisfied	Proceed to "Key-off Operation Function Operates even if Operating Conditions are not Satisfied"
Auto up operation does not fully close power window (jam protection function is activated)	Proceed to "Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)"
Auto down operation does not Fully open power window (Catch protection function is activated)	Proceed to "Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)"
Jam protection function does not operate	Proceed to "Jam Protection Function does not Operate"

Back Door Power Window Control System

Symptom	Suspected Area	See page
Auto up/down function does not operate	Proceed to "Auto Up/Down Function does not Operate"
Manual up/down function does not operate	Proceed to "Manual Up/Down Function does not Operate on Back Door Only"
Power windows do not operate with wireless transmitter	Proceed to "Wireless door lock control system (w/ Smart Key System)"
	Proceed to "Wireless door lock control system (w/o Smart Key System)"
	Main body ECU (multiplex network body ECU)
	Driver side junction block assembly	-
Power windows do not operate with back door key cylinder	Proceed to "Manual Up/Down Function does not Operate on Back Door Only"
Power windows do not operate with back door control switch	Proceed to "Manual Up/Down Function does not Operate on Back Door Only"
Only open operation of back door power window regulator switch does not operate	Meter / gauge system
	Proceed to "Back Door Courtesy Switch Circuit"
Key-off operation function operates even if operating conditions are not satisfied	Proceed to "Key-off Operation Function Operates even if Operating Conditions are not Satisfied"
Auto up operation does not fully close power window (jam protection function is activated)	Proceed to "Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)"
Jam protection function does not operate	Proceed to "Jam Protection Function does not Operate"

Initialization

INITIALIZATION 1. INITIALIZE POWER WINDOW CONTROL SYSTEM (POWER WINDOW REGULATOR MOTOR ASSEMBLY (ALL DOORS)) CAUTION: When a power window regulator motor assembly is reinstalled or replaced, the ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (a) Disconnect the h1 multiplex network master switch connector. (b) Measure the voltage and resistance according to the value(s ...

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