Toyota Corolla Cross: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
- Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Registration.*1
- *1: w/ Smart Key System
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
- When replacing the combination meter assembly, update the ECU security key.
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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.
Headlight|
Symptom | Suspected Area |
Link |
|---|---|---|
| Left low beam headlight does not illuminate |
Refer to "LO-beam Headlight does not Illuminate" |
|
|
Right low beam headlight does not illuminate |
Refer to "LO-beam Headlight does not Illuminate" |
|
|
Both left and right low beam headlights do not illuminate |
Headlight dimmer switch circuit |
|
|
CAN communication system*1 |
| |
|
CAN communication system*2 |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
CXPI communication system*3 |
| |
|
Left high beam headlight does not illuminate |
Headlight assembly LH*3 |
|
|
Headlight assembly LH*4 |
| |
|
Harness or connector |
- | |
|
Right high beam headlight does not illuminate |
Headlight assembly RH*3 |
|
|
Headlight assembly RH*4 |
| |
|
Harness or connector |
- | |
|
Both left and right high beam headlights do not illuminate |
High Beam Headlight Circuit*4 |
|
|
Headlight dimmer switch circuit |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
CXPI communication system*3 |
| |
|
High Flash (passing function) does not operate (high beam headlights are normal) |
High Beam Headlight Circuit*4 |
|
|
Headlight dimmer switch circuit |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
CXPI communication system*3 |
|
- *1: for HEV Model
- *2: for Gasoline Model
- *3: for LED Type Parking Light
- *4: for Bulb Type Parking Light
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right clearance light does not illuminate |
Parking light bulb*1 |
- |
| Headlight unit assembly*2 |
| |
|
Both left and right clearance lights do not illuminate |
Headlight dimmer switch circuit |
|
|
Main body ECU (Multiplex network body ECU) |
|
- *1: for Bulb Type Parking Light
- *2: for LED Type Parking Light
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left front side marker light does not illuminate |
Front side marker light bulb*1 |
- |
| Headlight unit assembly LH*2 |
| |
|
Right front side marker light does not illuminate |
Front side marker light bulb*1 |
- |
| Headlight unit assembly RH*2 |
| |
|
Both left and right front side marker lights do not illuminate |
Headlight dimmer switch circuit |
|
|
Main body ECU (Multiplex network body ECU) |
|
- *1: for Bulb Type Parking Light
- *2: for LED Type Parking Light
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right taillights/side marker lights (rear combination light assembly) does not illuminate |
Taillight bulb*1 | - |
|
Rear side marker light bulb*1 |
- | |
| Rear combination light assembly |
| |
|
Harness or connector |
- | |
|
Left or right taillight (rear light assembly) do not illuminate*2 |
Rear light assembly |
|
|
Harness or connector |
- | |
|
All of the taillights, parking lights, rear side marker lights and license plate lights do not illuminate |
Headlight dimmer switch circuit |
|
|
Taillight Relay Circuit |
| |
|
Main body ECU (Multiplex network body ECU) |
|
- *1: for Bulb Type Parking Light
- *2: for LED Type Parking Light
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right license plate light does not illuminate |
License plate light bulb |
|
|
Harness or connector |
- | |
|
Both left and right license plate lights do not illuminate |
Taillight Relay Circuit |
|
|
Harness or connector |
- |
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right stop light does not illuminate |
Rear combination light assembly |
|
|
Harness or connector |
- | |
|
All of the stop lights do not illuminate |
STOP fuse | - |
|
Stop light switch assembly |
| |
|
Harness or connector |
- |
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
High mounted stop light does not illuminate |
Center stop light assembly |
|
|
Harness or connector |
- |
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right front fog light does not illuminate |
Fog light assembly | - |
|
Harness or connector |
- | |
|
Both left and right front fog lights do not illuminate (taillights are normal) |
Headlight dimmer switch circuit |
|
|
Front fog light circuit |
| |
|
Harness or connector |
- |
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right back-up light does not illuminate |
Back-up light bulb |
|
|
Rear light assembly |
| |
|
Harness or connector |
- | |
|
Both left and right back-up lights do not illuminate |
BKUP LP fuse | - |
|
Park/neutral position switch assembly*1 |
| |
|
Park/neutral position switch assembly*2 |
| |
|
Back-up light circuit*3, *4 |
| |
|
Harness or connector |
- |
- *1: for 2WD
- *2: for AWD
- *3: for Gasoline Model without Smart Key System
- *4: for HEV Model
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right front turn signal light does not operate |
Front turn signal light bulb*1 |
- |
| Headlight unit assembly*2 |
| |
|
Harness or connector |
- | |
|
Left or right side turn signal light does not operate*3 |
Side turn signal light assembly |
|
|
Outer rear view mirror assembly |
| |
|
Harness or connector |
- | |
|
Left or right rear turn signal light does not operate |
Rear combination light assembly |
|
|
Harness or connector |
- | |
|
Turn signal lights do not operate in one direction |
Turn signal switch circuit |
|
|
Meter/gauge system |
| |
|
All turn signal lights do not operate |
Turn signal switch circuit |
|
|
Meter/gauge system |
| |
|
All turn signal lights do not flash at the correct speed |
Combination meter assembly |
|
- *1: for Bulb Type Parking Light
- *2: for LED Type Parking Light
- *3: for Outer Rear View Mirror Type Side Turn Signal Light
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Hazard warning signal lights do not operate |
Hazard warning switch circuit |
|
|
Combination meter assembly |
|
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Automatic light control system does not operate |
Headlight dimmer switch circuit |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Light auto turn-off system does not operate |
Headlight dimmer switch circuit |
|
|
IG signal circuit |
| |
|
Front door courtesy switch circuit |
| |
|
Main body ECU (Multiplex network body ECU) |
|
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Left or right daytime running light does not illuminate |
Headlight unit assembly |
|
|
Harness or connector |
- | |
| Both left and right daytime running lights do not illuminate |
Daytime Running Light Circuit |
|
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Welcome light illumination control does not operate |
Check customize settings |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
Symptom | Suspected Area |
Link |
|---|---|---|
| Wiper-linked low beam headlight control system does not operate |
Main body ECU (Multiplex network body ECU) |
|
READ NEXT:
Terminals Of Ecu
TERMINALS OF ECU
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assem
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a p
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Lighting System
DTC No. Detection Item
Link B124400
Light Sensor Circuit Malfunction
B243900 Headlight LH Circuit
B243
SEE MORE:
Installation
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 FRONT SEAT ASSEMBLY
-
- -
2 INSPECT SEAT SLIDE ADJUSTER LOCK
-
- -
3 SEAT TRACK OUTER COVER
72138
Inspection
INSPECTION
PROCEDURE
1. INSPECT GENERATOR W/CLUTCH PULLEY
(a) Hold the center of the generator pulley with clutch, and confirm
that the outer ring turns counterclockwise and does not turn clockwise.
OK:
The outer ring turns counterclockwise and does not turn clockwise.
If
