Toyota 4Runner manuals

Toyota 4Runner: 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.

Intuitive Parking Assist System

Symptom

Suspected Area

See page

System does not operate at all (Initial check function also does not operate)

Proceed to "Clearance sonar main switch circuit"


Clearance warning ECU assembly


Clearance warning indicator indicates that front clearance sonar sensor LH and/or RH are frozen

Clear the sensors surface


Proceed to "Front Clearance Sonar Sensor LH Circuit"


Proceed to "Front Clearance Sonar Sensor RH Circuit"


Clearance warning ECU assembly


Clearance warning indicator indicates rear clearance sonar sensor is frozen

Clean the sensor surface


Proceed to "Rear Clearance Sonar Sensor LH Circuit"


Proceed to "Rear Clearance Sonar Sensor RH Circuit"


Clearance warning ECU assembly


Clearance warning indicator indicates back sonar sensor is frozen

Clean the sensor surface


Proceed to "Back Sonar Sensor LH Circuit"


Proceed to "Back Sonar Sensor RH Circuit"


Clearance warning ECU assembly


Clearance warning indicator indicates open in front clearance sonar sensor LH and/or RH

Clean the sensor surface


Front Clearance Sonar Sensor LH Circuit


Front Clearance Sonar Sensor RH Circuit


Clearance warning ECU assembly


Clearance warning indicator indicates open in rear clearance sonar sensor circuit

Initial check function


Proceed to "Rear Clearance Sonar Sensor LH Circuit"


Proceed to "Back Sonar Sensor LH Circuit"


Proceed to "Back Sonar Sensor RH Circuit"


Proceed to "Rear Clearance Sonar Sensor RH Circuit"


Clearance warning ECU assembly


Clearance sonar sensors operate when shift lever is not in R, or do not operate even when shift lever is in R

Proceed to "Park/Neutral Position Switch Circuit"


Clearance warning ECU assembly


System operates even when vehicle speed is 10 km/h (6.2 mph) or more

Proceed to "Speed Signal Circuit"


Clearance warning ECU assembly


Indicator does not dim at night, or illuminates dimly during daytime

Proceed to "Taillight Relay Circuit"


Proceed to "Clearance Sonar Main Switch Circuit"


Clearance warning ECU assembly


Detection operation is normal but clearance warning indicator does not illuminate

Proceed to "Indicator Circuit"


Combination meter assembly


Clearance warning ECU assembly


Detection operation is normal but clearance sonar main switch indicator does not illuminate

Inspect back sonar or clearance sonar switch assembly


Proceed to "Indicator Circuit"


Clearance warning ECU assembly


System operates but clearance warning buzzer does not sound

Proceed to "Clearance Warning Buzzer Circuit"


Replace clearance warning ECU assembly


Clearance warning buzzer volume is low

Clearance warning ECU assembly


Operation Check
OPERATION CHECK 1. CHECK INITIAL CHECK FUNCTION (a) Check the initial check function for the buzzer. (1) When the back sonar or clearance sonar switch assembly is turned on, check that the foll ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK CLEARANCE WARNING ECU (a) Disconnect the F95 clearance warning ECU assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table be ...

Other materials about Toyota 4Runner:

Telephone Microphone
Components COMPONENTS ILLUSTRATION ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE DRIVE MONITOR SWITCH 2. REMOVE MAP LIGHT ASSEMBLY 3. REMOVE TELEPHONE MICROPHONE ASSEMBLY (a) Disconnect the 6 connectors. ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below. Wireless Door Lock Control System DTC Code ...

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