Toyota Yaris: Lighting System / Parking Brake Switch Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the condition of the parking brake switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
.gif)
PROCEDURE
| 1. | 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 | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Parking Brake Switch | Parking brake switch signal | Release or Lock | Release: Parking brake released Lock: ON: Parking brake applied | - |
| Tester Display |
|---|
| Parking Brake Switch |
OK:
Normal conditions listed above are displayed.
| OK |
.gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
| 2. | INSPECT PARKING BRAKE SWITCH ASSEMBLY |
Click here
| NG |
| REPLACE PARKING BRAKE SWITCH ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY) |
(a) Disconnect the 4B power distribution box assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| H37-1 (+) - 4B-13 | Always | Below 1 Ω |
| H37-1 (+) or 4B-13 - Body ground | Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. | INSPECT POWER DISTRIBUTION BOX ASSEMBLY |
| *a | Component without harness connected (Power Distribution Box Assembly) | - | - |
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Click here
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4B-13 - MB-21 (PKB) | Always | Below 1 Ω |
| OK |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG |
| REPLACE POWER DISTRIBUTION BOX ASSEMBLY |
LO-beam Headlight does not Illuminate
DESCRIPTION The main body ECU (multiplex network body ECU) controls the low beam headlights. WIRING DIAGRAM
CAUTION / NOTICE / HINT NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration...
Taillight Relay Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the, taillight and license plate light. WIRING DIAGRAM
CAUTION / NOTICE / HINT NOTICE:
First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom...
Other information:
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Installation
INSTALLATION PROCEDURE 1. INSTALL FUEL MAIN VALVE ASSEMBLY (a) Apply gasoline to a new O-ring. (b) Install the spacer and O-ring to the fuel main valve assembly. *1 O-ring *2 Spacer (c) Install the fuel main valve assembly to the fuel suction with pump and gauge tube assembly...
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Lost Communication With ECM/PCM "A" Missing Message (U010087,U011487,U012987,U013187,U014087,U015187,U016887,U023587,U023A87,U111287,U113387)
DESCRIPTION The combination meter assembly communicates with each ECU via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication With ECM/PCM "A" Missing Message Diagnosis Condition: The ignition switch is ON IG power source voltage is 9...
Categories
- Manuals Home
- Toyota Yaris Owners Manual
- Toyota Yaris Service Manual
- Headlights
- Auto Lock/Unlock Function
- To Set Speed
- New on site
- Most important about car
Turning the Engine Off
Stop the vehicle completely. Manual transaxle: Shift into neutral and set the parking brake.Automatic transaxle: Shift the selector lever to the P position and set the parking brake.
Press the push button start to turn off the engine. The ignition position is off.