Toyota Corolla Cross: Headlight Dimmer Switch Circuit
DESCRIPTION
The steering sensor receives the following switch information:
- Light control switch in DRL OFF*1, TAIL, HEAD, AUTO position
- Dimmer switch in high, low or high flash (pass) position
- Fog light switch in front*2 or off position
- *1: w/ DRL OFF Switch
- *2: w/ Fog Light
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*1
for HEV Model: Click here .gif)
for Gasoline Model: Click here
- *1: w/ Smart Key System
PROCEDURE
|
1. | READ VALUE USING GTS |
(a) Enter the following menus: Chassis / Steering Angle Sensor / Data List.
(b) Read the Data List according to the display on the GTS.
Chassis > Steering Angle Sensor > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Auto Light Switch | Light control switch AUTO position signal |
OFF or ON | OFF: Light control switch not in AUTO position ON: Light control switch in AUTO 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 |
|
Tester Display |
|---|
| 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 | .gif) | GO TO STEP 5 |
|
.gif)
| 2. |
READ VALUE USING GTS |
(a) Enter the following menus: Body Electrical / Main Body / Data List.
(b) Read the Data List according to the display on the GTS.
Body Electrical > Main Body > Data List|
Tester Display | Measurement Item |
Range | Diagnostic Note |
|---|---|---|---|
|
Light Control Switch (HEAD) |
Light control switch head position signal |
OFF: Light control switch not in head position ON: Light control switch in head position |
- |
|
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 |
.png)
|
*a | Component without harness connected (Steering Sensor) | - |
- |
(a) Remove the steering sensor.
Click here
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I229-7 (HEAD) - z15-4 (H) |
Always | Below 1 Ω |
| NG | | REPLACE STEERING SENSOR |
|
| 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.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I229-7 (HEAD) - I85-26 (HEAD) |
Always | Below 1 Ω |
|
I229-7 (HEAD) - Body ground |
Always | 10 kΩ or higher |
|
I85-26 (HEAD) - Body ground |
Always | 10 kΩ or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 5. |
INSPECT TURN SIGNAL SWITCH |
Click here
| NG | |
REPLACE TURN SIGNAL SWITCH |
|
| 6. |
INSPECT STEERING WHEEL SWITCH HOUSING |
Click here
| OK | | REPLACE STEERING SENSOR |
| NG | | REPLACE STEERING WHEEL SWITCH HOUSING |
READ NEXT:
Daytime Running Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the daytime running lights. WIRING DIAGRAM
for LED Type Parking Light
for Bulb Type Parking Light CAUTION / NOTICE / HINT
NOTIC
Front Fog Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the front fog lights. WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body
Hazard Warning Switch Circuit
DESCRIPTION The combination meter assembly receives the hazard warning signal switch assembly on signal and controls the operation of the hazard warning lights. WIRING DIAGRAM
CAUTION / NOTICE / HIN
SEE MORE:
Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with a diagnosis system, the
only difference from the usual troubleshooting procedure is connecting the GTS to
the vehicle and reading various data output from the clearance warning ECU assembly.
The clearance warning ECU assembl
Data List / Active Test
DATA LIST / ACTIVE TEST
READ 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 part is faulty or not.
HINT:
Using the GTS to read the Data List allows the va
