| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001QT12 |
| Model Year Start: 2021 | Model: RAV4 | Prod Date Range: [08/2020 - ] |
| Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: B1243; GSW Terminal Circuit Malfunction; 2021 - 2024 MY RAV4 RAV4 HV [08/2020 - ] | ||
|
DTC |
B1243 |
GSW Terminal Circuit Malfunction |
DESCRIPTION
If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B1243 will be stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B1243 |
GSW Terminal Circuit Malfunction |
A malfunction occurs in the GSW input circuit of the main body ECU (multiplex network body ECU). |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION](/t3Portal/stylegraphics/info.gif)
-
If the main body ECU (multiplex network body ECU) is replaced, refer to the Smart Key System (for start function).*
for HV Model:
Click here
for Gasoline Model:
Click here
- When DTC B1243 is output, the collision door lock release, shift-linked automatic door lock/unlock and speed-sensitive automatic door lock functions are prohibited.
-
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
Click here
- *: w/ Smart Key System
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
Body Electrical > Main Body > Clear DTCs
|
|
2. |
CHECK FOR DTC |
(a) Recheck for DTCs.
Click here
Body Electrical > Main Body > Trouble Codes
OK:
DTC B1243 is not output.
| OK |
|
|
|
3. |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
(a) Disconnect the cable from the negative (-) auxiliary battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system. NOTICE: Turning the ignition switch to ON with the airbag ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection. |
|
(b) Disconnect the airbag ECU assembly connector.
Click here
(c) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
G70-25 (GSW) - Body ground |
Ignition switch ON |
4.3 to 5.5 V |
| OK |
|
REPLACE AIRBAG ECU ASSEMBLY
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - AIRBAG ECU ASSEMBLY) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
(b) Disconnect the 4A instrument panel junction block assembly connector.
(c) Disconnect the G70 airbag ECU assembly connector.
Click here
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4A-7 - G70-25 (GSW) |
Always |
Below 1 Ω |
|
4A-7 or G70-25 (GSW) - Other terminals and body ground |
Always |
10 kΩ or higher |
| NG |
|
REPLACE HARNESS OR CONNECTOR |
|
|
5. |
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 |
|---|---|---|
|
A-24 (GSW) - 4A-7 |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|