DESCRIPTION
The main body ECU (Multiplex Network Body ECU) receives a back door open/closed signal from back door lock assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main ECU (multiplex network body ECU), refer to Registration*1.
Click here
PROCEDURE
1. |
READ VALUE 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 / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
Back Door Courtesy SW |
Back door courtesy switch signal |
ON or OFF |
ON: Back door open OFF: Back door closed |
- |
Tester Display |
---|
Back Door Courtesy SW |
OK:
Normal conditions listed above are displayed.
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT BACK DOOR LOCK ASSEMBLY |
(a) Remove the back door lock assembly.
Click here
(b) Inspect the back door courtesy switch built in the back door lock assembly.
Click here
OK:
Back door lock assembly is normal.
NG |
REPLACE BACK DOOR LOCK ASSEMBLY |
|
3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3H 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 |
---|---|---|
S9-3(D+) - 3H-34 |
Always |
Below 1 Ω |
S9-3(D+) or 3H-34 - Body ground |
Always |
10 kΩ or higher |
S9-2(ACT-) - Body ground |
Always |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
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 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 |
---|---|---|
3H-34 - MB-4 (BCTY) |
Always |
Below 1 Ω |
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
Toyota CH-R Service Manual > Ptc Heater Assembly: Installation
INSTALLATION
PROCEDURE
1. INSTALL QUICK HEATER ASSEMBLY (for VALEO Made)
(a) Install the quick heater assembly with the 2 screws as shown in the illustration.
Install in this Direction
2. INSTALL QUICK HEATER ASSEMBLY (for DENSO Made)
(a) Engage the guide to insta ...
Toyota CH-R Service Manual > Smart Key System(for Start Function): System Voltage or GND Energization Malfunction (B228B)
DESCRIPTION
This DTC is stored when there is a malfunction in the certification ECU (smart
key ECU assembly) battery power supply circuit or ground circuit.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
B2 ...