Toyota CH-R Service Manual: Low Beam Headlight Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the low beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses and bulbs for circuits related to this system before performing the following procedure.
- Before replacing the main body ECU (multiplex network body ECU), refer
to Registration.*1
Click here
.gif)
- *1: w/ Smart Key System
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (HEADLIGHT RELAY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Check that the relay operates.
Body Electrical > Main Body > Active Test|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Headlight Relay |
Low beam headlights |
ON or OFF |
- |
|
Tester Display |
|---|
|
Headlight Relay |
OK:
Headlight relay operates. (Low beam headlights illuminate.)
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
.gif)
|
2. |
INSPECT NO. 1 INTEGRATION RELAY (H-LP LH RELAY, H-LP RH RELAY) |
(a) Remove the No. 1 integration relay from the No. 1 engine room relay block.
Click here
(b) Inspect the No. 1 integration relay.
Click here
OK:
No. 1 integration relay is normal.
| NG | |
REPLACE NO. 1 INTEGRATION RELAY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BATTERY) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1A-5 - Body ground |
Always |
11 to 14 V |
|
1B-8 - Body ground |
Always |
11 to 14 V |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND) |
(a) Disconnect the A9 headlight assembly LH connector.
(b) Disconnect the A28 headlight assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1B-1 - A9-2 (LO) |
Always |
Below 1 Ω |
|
1A-12 - A28-2 (LO) |
Always |
Below 1 Ω |
|
A9-1 (E) - Body ground |
Always |
Below 1 Ω |
|
A28-1 (E) - Body ground |
Always |
Below 1 Ω |
|
1B-1 - Body ground |
Always |
10 kΩ or higher |
|
1A-12 - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - INSTRUMENT PANEL JUNCTION BLOCK) |
(a) Disconnect the 3F instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1A-11 - 3F-31 |
Always |
Below 1 Ω |
|
1B-2 - 3F-31 |
Always |
Below 1 Ω |
|
1A-11 or 3F-31 - Body ground |
Always |
10 kΩ or higher |
|
1B-2 or 3F-31 - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3F-31 - MB-15 (HRLY) |
Always |
Below 1 Ω |
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
Power Source Circuit
DESCRIPTION
When the ignition switch is ON or the operation conditions of the headlights
are met, the main body ECU (multiplex network body ECU) supplies power to the headlight
ECU sub-assemblies ...
High Beam Headlight Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuse for circuits related to thi ...
Other materials:
Toyota CH-R Service Manual > Seat Heater System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the battery voltage is low, the seat heater system may not operate. Refer
to Data List for power steering system.
Click here
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the p ...
Toyota CH-R Service Manual > Theft Deterrent / Keyless Entry: Electrical Key Oscillator(for Rear Floor)
Components
COMPONENTS
ILLUSTRATION
*1
BENCH TYPE REAR SEAT CUSHION ASSEMBLY
*2
NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY
*3
REAR CENTER SEAT OUTER BELT ASSEMBLY
*4
REAR SEAT CUSHION LOCK HOOK
...
Toyota CH-R Owners Manual
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Toyota CH-R Service Manual
- Introduction
- Maintenance
- Audio / Video
- Cellular Communication
- Navigation / Multi Info Display
- Park Assist / Monitoring
- Brake (front)
- Brake (rear)
- Brake Control / Dynamic Control Systems
- Brake System (other)
- Parking Brake
- Axle And Differential
- Drive Shaft / Propeller Shaft
- K114 Cvt
- 3zr-fae Battery / Charging
- Networking
- Power Distribution
- Power Assist Systems
- Steering Column
- Steering Gear / Linkage
- Alignment / Handling Diagnosis
- Front Suspension
- Rear Suspension
- Tire / Wheel
- Tire Pressure Monitoring
- Door / Hatch
- Exterior Panels / Trim
- Horn
- Lighting (ext)
- Mirror (ext)
- Window / Glass
- Wiper / Washer
- Door Lock
- Heating / Air Conditioning
- Interior Panels / Trim
- Lighting (int)
- Meter / Gauge / Display
- Mirror (int)
- Power Outlets (int)
- Pre-collision
- Seat
- Seat Belt
- Supplemental Restraint Systems
- Theft Deterrent / Keyless Entry
0.0188