Toyota Venza manuals

Toyota Venza: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

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.

Headlight and Taillight

Symptom

Suspected Area

See page

One low beam headlight does not illuminate.

H-LP LH LO fuse or H-LP RH LO fuse

-

Bulb (for Halogen Headlight)

-

Discharge headlight bulb (for HID Headlight)


Light control ECU (for HID Headlight)


Headlight unit (for HID Headlight)


Power distributor (Engine room junction block assembly)


Harness or connector

-

Both left and right low beam headlights do not illuminate.

Light control switch circuit


Headlight relay circuit


Main body ECU (Driver side junction block assembly)


One high beam headlight does not illuminate.

H-LP LH HI fuse or H-LP RH HI fuse

-

Bulb

-

Power distributor (Engine room junction block assembly)


Harness or connector

-

Both left and right high beam headlights do not illuminate.

Light control switch circuit


High beam headlight circuit (for Halogen Headlight)


Headlight solenoid circuit (for HID Headlight)


Main body ECU (Driver side junction block assembly)


"High Flash" (passing function) headlight does not illuminate (high beam headlights are normal).

Light control switch circuit


High beam headlight circuit


Main body ECU (Driver side junction block assembly)


Discharge headlight bulb flickers.

Discharge headlight bulb


Harness or connector

-

Light control ECU


Discharge headlight bulb is dark.

Discharge headlight bulb


Harness or connector

-

Light control ECU


Discharge headlight bulb does not come on at intervals.

Discharge headlight bulb


Harness or connector

-

Light control ECU


One front parking light does not illuminate.

Bulb

-

Harness or connector

-

One rear taillight does not illuminate.

Bulb

-

Harness or connector

-

One license plate light does not illuminate.

Bulb

-

Harness or connector

-

One side marker light does not illuminate.

Bulb

-

Harness or connector

-

All of the lights (rear taillights, front side marker lights, parking lights, license plate lights and rear side marker lights) do not illuminate.

TAIL fuse

-

Light control switch circuit


Taillight relay circuit


Main body ECU (Driver side junction block assembly)


Stop Light

Symptom

Suspected Area

See page

One side stop light does not illuminate.

Rear combination light assembly


Harness or connector

-

High mounted stop light does not illuminate.

High mounted stop light assembly


Harness or connector

-

All of lights do not illuminate.

STOP fuse

-

Stop light switch assembly


Harness or connector

-

Front Fog Light

Symptom

Suspected Area

See page

One side front fog light does not illuminate.

Bulb

-

Harness or connector

-

Both left and right front fog lights do not illuminate (taillight is normal).

FOG fuse

-

Light control switch circuit


Front fog light circuit


Main body ECU (Driver side junction block assembly)


Back-up Light

Symptom

Suspected Area

See page

One back-up light does not illuminate.

Bulb

-

Harness or connector

-

Both left and right back-up lights do not illuminate.

GAUGE NO. 2 fuse

-

Park/neutral position switch (for U660F)


Park/neutral position switch (for U660E)


Park/neutral position switch (for U760E)


Park/neutral position switch (for U760F)


Harness or connector

-

Turn Signal Light

Symptom

Suspected Area

See page

One turn signal light does not operate.

Bulb

-

Harness or connector

-

Side turn signal light does not operate.

Side turn signal light assembly


Outer rear view mirror assembly


Harness or connector

-

Outer mirror control ECU assembly (w/ Seat Position Memory)


Turn signal lights do not operate in one direction.

Headlight dimmer switch assembly (Turn signal light switch)


Turn signal flasher assembly


Harness or connector

-

All turn signal lights do not operate.

GAUGE NO. 1 fuse

-

HAZ fuse

-

Headlight dimmer switch assembly (Turn signal light switch)


Turn signal flasher assembly


Harness or connector

-

All turn signal lights do not flash at the correct speed.

Bulb

-

Turn signal flasher assembly


Harness or connector

-

Hazard Warning Light

Symptom

Suspected Area

See page

Hazard warning lights do not operate.

HAZ fuse

-

GAUGE NO. 1 fuse

-

Hazard warning switch


Turn signal flasher assembly


Harness or connector

-

Automatic Light Control System

Symptom

Suspected Area

See page

Automatic light control system does not operate.

Check DTCs


Light control switch circuit


IG signal circuit


Main body ECU (Driver side junction block assembly)


Light Auto Turn-off System

Symptom

Suspected Area

See page

Light auto turn-off system does not operate.

Light control switch circuit


Door courtesy switch circuit


IG signal circuit


Main body ECU (Driver side junction block assembly)


Daytime Running Light System (for Halogen Headlight)

Symptom

Suspected Area

See page

Daytime running light system does not operate.

Check CAN communication system

-

Light control switch circuit


IG signal circuit


Parking brake switch circuit


High beam headlight circuit


Main body ECU (Driver side junction block assembly)


Daytime Running Light System (for HID Headlight)

Symptom

Suspected Area

See page

Daytime running light system does not operate.

Check CAN communication system

-

Light control switch circuit


IG signal circuit


Parking brake switch circuit


Daytime running light relay circuit


Main body ECU (Driver side junction block assembly)


Automatic High Beam System

Symptom

Suspected Area

See page

Inner rear view mirror assembly indicator light does not come on when the ignition switch is turned from off to ON.

Inner rear view mirror power source circuit


Inner rear view mirror assembly


Inner rear view mirror assembly indicator light remains on when the inner rear view mirror assembly AUTO switch is pressed.

Inner rear view mirror assembly


Inner rear view mirror assembly indicator light flashes.

Perform operation check


Inner rear view mirror assembly


Automatic high beam indicator light does not come on when the automatic high beam system is in standby mode (automatic light control system operates normally).

Perform operation check


Light control switch circuit


Combination meter assembly


Automatic high beam system does not operate (automatic high beam indicator light flashes).

Check DTCs


Combination meter assembly


Automatic high beam system does not operate (automatic high beam indicator light is on or off).

Inner rear view mirror assembly (Camera detection malfunction*1)


Inner rear view mirror assembly (Aiming misalignment*2)


NOTICE:

*1: Camera detection malfunctions can be detected using the Techstream. Under the following conditions, if the camera built into the inner rear view mirror assembly cannot detect other vehicles or lights correctly, it will stop automatic high beam control and turn off the automatic high beam indicator light:

  • When the front windshield is not clear (ice, snow or frost on the glass).
  • When the front windshield is dirty (sand, mud, water stains or bugs are on the glass).

*2: Aiming misalignment of the camera can be detected using the Techstream. Under the following conditions, the camera built in to the rear view mirror assembly cannot adjust its center point:

  • When the inner rear view mirror assembly is on an angle due to mis-installation or damage to the camera.
  • When the automatic aiming adjusting function of the mirror does not work correctly.

If the camera aiming is misaligned, check the following conditions:

  • Check if the vehicle is inclined.
  • Check if the windshield glass is installed correctly.
  • Check if the inner rear view mirror assembly is installed correctly.
  • Check if there is deformation of the camera or stay of the inner rear view mirror assembly.
Automatic Headlight Beam Level Control

Symptom

Suspected Area

See page

Headlight beam level control indicator light flashes.

Check DTCs


Indicator circuit


Headlight leveling ECU assembly


Headlight beam level control does not operate (indicator light is off).

Check the FAIL-SAFE function


Check DTCs


Headlight leveling ECU power source circuit


Headlight signal circuit


Headlight beam level control actuator circuit


Speed signal circuit


Headlight leveling ECU assembly


Headlight beam level control system indicator light does not come on when turning the ignition switch to ON.

Indicator circuit


Headlight leveling ECU assembly


Combination meter assembly


DTC information can not be detected.

Diagnosis circuit


Headlight leveling ECU assembly


Initialization cannot be performed.

Check DTCs


LVL terminal circuit


Headlight leveling ECU assembly


NOTICE:

  • Initialize the headlight leveling ECU assembly after the vehicle height changes due to replacement of the suspension or after performing such operations as removal and reinstallation or replacement of the rear height control sensor sub-assembly RH.
  • When the headlight leveling ECU assembly is replaced, the initialization is also necessary.
Door Mirror Foot Light

Symptom

Suspected Area

See page

One door mirror foot light does not illuminate. (w/ Seat Memory Position)

Outer mirror light assembly


Door mirror foot light circuit


Outer mirror control ECU assembly


One door mirror foot light does not illuminate. (w/o Seat Memory Position)

Outer mirror light assembly


Door mirror foot light circuit


Main body ECU (Driver side junction block assembly)


Both left and right door mirror foot lights do not illuminate.

CAN communication system (w/ Seat Position Memory)


Power door lock control system


Wireless door lock control system (w/ smart key system)


Wireless door lock control system (w/o smart key system)


Smart key system (for entry function)


Door mirror foot light circuit


Door unlock detection switch circuit


Main body ECU (Driver side junction block assembly)


Initialization
INITIALIZATION NOTICE: Initialize the headlight leveling ECU assembly (set the zero point of the height control sensor in the headlight leveling ECU assembly) after the vehicle heigh ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) (a) Disconnect the 2A and 2F main body ECU (driver side junction block assembly) connectors. (b) Measure the voltag ...

Other materials about Toyota Venza:

Seat Belt Buckle Switch LH Circuit Malfunction (B1656/38)
DESCRIPTION The seat belt buckle switch LH circuit consists of the center airbag sensor assembly and front seat inner belt assembly LH. DTC B1656/38 is stored when a malfunction is detected in the seat belt buckle switch LH circuit. DTC No. ...

Diagnosis Circuit
DESCRIPTION This circuit is used to read the DTCs that are output from the transponder key ECU assembly with the Techstream. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: If the transponder key ECU assembly is replaced, register the key and ECU commu ...

Basic Inspection
BASIC INSPECTION When the malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following pr ...

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