| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FWRM |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: LIGHTING (INT): LIGHTING SYSTEM: Back Door Courtesy Switch Circuit; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
Back Door Courtesy Switch Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the condition of the back door lock with courtesy light switch assembly (back door courtesy light switch).
WIRING DIAGRAM
w/ Power Back Door System:
w/o Power Back Door System:
CAUTION / NOTICE / HINT
NOTICE:
w/ Smart Key System:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Read the Data List according to the display on the Techstream.
Click here
![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; LIGHTING (INT): LIGHTING SYSTEM: DATA LIST / ACTIVE TEST](/t3Portal/stylegraphics/info.gif)
Body Electrical > Main Body > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Back Door Courtesy SW |
Back door courtesy light switch signal |
OFF or ON |
OFF: Back door closed ON: Back door open |
- |
Body Electrical > Main Body > Data List
|
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 WITH COURTESY LIGHT SWITCH ASSEMBLY |
(a) Remove the back door lock with courtesy light switch assembly.
Click here
(b) Inspect the back door lock with courtesy light switch assembly.
Click here
|
Result |
Proceed to |
|---|---|
|
OK (w/ Power Back Door System) |
A |
|
OK (w/o Power Back Door System) |
B |
|
NG |
C |
| B |
|
| C |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the R14 back door lock with courtesy light switch assembly connector.
(b) Disconnect the 4H instrument panel junction block assembly connector.
(c) Disconnect the R18 multiplex network door ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R14-4 (CTY) - 4H-34 |
Always |
Below 1 Ω |
|
R14-4 (CTY) or 4H-34 - Body ground |
Always |
10 kΩ or higher |
|
R14-1 (E) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(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.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4H-34 - A-4 (BCTY) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
5. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the R11 back door lock with courtesy light switch assembly connector.
(b) Disconnect the 4H instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R11-3 (D+) - 4H-34 |
Always |
Below 1 Ω |
|
R11-3 (D+) or 4H-34 - Body ground |
Always |
10 kΩ or higher |
|
R11-2 (ACT-) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(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.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4H-34 - A-4 (BCTY) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|