Toyota CH-R Service Manual: Interior Light Auto Cut Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls operation of the DOME CUT relay in order to supply power to the interior lights. When the battery saving function operates while the interior lights are on, the main body ECU (multiplex network body ECU) opens the DOME CUT relay to turn off the lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses 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
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- *1: w/ Smart Key System
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Relay for Interior Light Auto Cut Function |
DOME CUT relay |
ON or OFF |
When performing this active test, turn all the interior lights on.
|
|
Tester Display |
|---|
|
Relay for Interior Light Auto Cut Function |
OK:
All of the interior lights turn off when ON is selected.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
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|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3K instrument panel junction block assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3K-1 - Body ground |
Always |
11 to 14 V |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
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.
Click here
(c) Measure the voltage and resistance according to the value(s) in the table below.
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3H-19 - Battery negative terminal |
Battery positive (+) → 3K-1 Battery negative (-) → MB-23 (DOMR) |
11 to 14 V |
|
3D-9 - Battery negative terminal |
Battery positive (+) → 3K-1 Battery negative (-) → MB-23 (DOMR) |
11 to 14 V |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3K-1 - 3H-19 |
Always |
10 kΩ or higher |
|
3K-1 - 3D-9 |
Always |
10 kΩ or higher |
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
Interior Light Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the operation of the
following lights:
Map Light Assembly
No. 1 Room Light Assembly
WIRING DIAGRAM
CAUTION ...
Ambient Illumination Light Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the ambient illumination
lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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CAUTION / NOTICE / HINT
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Engine Room Junction Block
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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
KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual
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