| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000028JQ4 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: Headlight Dimmer Switch Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
Headlight Dimmer Switch Circuit |
DESCRIPTION
The steering sensor receives the following switch information:
- Light control switch in DRL OFF*1, off*2, tail, head, DRL*3 or AUTO*4 position
- Dimmer switch in high, low or high flash (pass) position
-
Fog light switch in front or off position*5
- *1: w/ DRL OFF Switch
- *2: w/ OFF Switch
- *3: w/o Automatic Light Control
- *4: w/ Automatic Light Control
- *5: w/ Front Fog Light
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
for HV Model: Click here
![2023 - 2025 MY Corolla Corolla HV [09/2022 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
for Gasoline Model:Click here
PROCEDURE
|
1. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Chassis > Steering Angle Sensor > Data List
|
Tester Display |
Measurement Item |
Normal Condition |
Reference Value |
Diagnostic Note |
|---|---|---|---|---|
|
Light OFF Switch |
Light control switch DRL OFF*1 or off*2 position signal |
OFF or ON |
OFF: Light control switch not in DRL OFF*1 or off*2 position ON: Light control switch in DRL OFF*1 or off*2 position |
*1, *2 |
|
Auto Light Switch |
Light control switch AUTO*3 or DRL*4 position signal |
OFF or ON |
OFF: Light control switch not in AUTO*3 or DRL*4 position ON: Light control switch in AUTO*3 or DRL*4 position |
- |
|
Head Light Switch (Tail) |
Light control switch tail position signal |
OFF or ON |
OFF: Light control switch in neither tail nor head position ON: Light control switch in tail or head position |
- |
|
Head Light Switch (Head) |
Light control switch head position signal |
OFF or ON |
OFF: Light control switch not in head position ON: Light control switch in head position |
- |
|
High Beam Main Switch |
Dimmer switch high position signal |
OFF or ON |
OFF: Dimmer switch not in high position ON: Dimmer switch in high position |
- |
|
Passing Light Switch |
Dimmer switch high flash position (pass) signal |
OFF or ON |
OFF: Dimmer switch not in high flash position ON: Dimmer switch in high flash position |
- |
|
Front Fog Light Switch |
Front fog light switch signal |
OFF or ON |
OFF: Front fog light switch off ON: Front fog light switch on |
w/ Front Fog Light |
- *1: w/ DRL OFF Switch
- *2: w/ OFF Switch
- *3: w/ Automatic Light Control
- *4: w/o Automatic Light Control
Chassis > Steering Angle Sensor > Data List
|
Tester Display |
|---|
|
Light OFF Switch |
|
Auto Light Switch |
|
Head Light Switch (Tail) |
|
Head Light Switch (Head) |
|
High Beam Main Switch |
|
Passing Light Switch |
|
Front Fog Light Switch |
OK:
Normal conditions listed above are displayed.
| NG |
|
|
|
2. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Main Body > Data List
|
Tester Display |
Measurement Item |
Normal Condition |
Reference Value |
Diagnostic Note |
|---|---|---|---|---|
|
Light Control Switch (HEAD) |
Light control switch head position signal |
OFF or ON |
OFF: Light control switch not in head position ON: Light control switch in head position |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
Light Control Switch (HEAD) |
OK:
Normal conditions listed above are displayed.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
3. |
INSPECT STEERING SENSOR |
|
*a |
Component without harness connected (Steering Sensor) |
*b |
for G16E-GTS |
|
*c |
for M20A-FKS, for 2ZR-FXE |
- |
- |
(a) Remove the steering sensor.
Click here
(b) Measure the resistance according to the value(s) in the table below. (for M20A-FKS, for 2ZR-FXE)
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I211-7 (HEAD) - z17-4 (H) |
Always |
Below 1 Ω |
(c) Measure the resistance according to the value(s) in the table below. (for G16E-GTS)
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I46-7 (HEAD) - z17-4 (H) |
Always |
Below 1 Ω |
| NG |
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (STEERING SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below. (for G16E-GTS)
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I46-7 (HEAD) - I85-26 (HEAD) |
Always |
Below 1 Ω |
|
I46-7 (HEAD) or I85-26 (HEAD) - Body ground |
Always |
10 kΩ or higher |
(c) Measure the resistance according to the value(s) in the table below. (for M20A-FKS, for 2ZR-FXE)
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I211-7 (HEAD) - I85-26 (HEAD) |
Always |
Below 1 Ω |
|
I211-7 (HEAD) or I85-26 (HEAD) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT TURN SIGNAL SWITCH |
Click here
| NG |
|
|
|
6. |
INSPECT STEERING WHEEL SWITCH HOUSING |
Click here
| OK |
|
| NG |
|
|
|