- Unset or Set is not displayed correctly on the Techstream according to the front passenger seat belt condition
- NG is displayed on the Techstream
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FQFB |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 08/2020] |
| Title: SEAT BELT: SEAT BELT WARNING SYSTEM (w/ Occupant Classification System): Front Passenger Side Seat Belt Warning Light Malfunction; 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020] | ||
|
Front Passenger Side Seat Belt Warning Light Malfunction |
DESCRIPTION
When the ignition switch is turned to ON, the occupant detection ECU sends signals to the airbag ECU assembly to indicate the state of the front seat inner belt assembly RH and also whether the front passenger seat is occupied. The airbag ECU assembly sends those signals to the combination meter assembly via CAN communication. The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with these signals.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The seat belt warning system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here
![2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; SEAT BELT: SEAT BELT WARNING SYSTEM (w/ Occupant Classification System): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
HINT:
The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.
Click here
If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter.
Click here
PROCEDURE
|
1. |
CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) |
(a) Clear the DTCs.
Click here
Body Electrical > Occupant Detection > Clear DTCs
(b) Check for DTCs.
Click here
Body Electrical > Occupant Detection > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
GO TO OCCUPANT CLASSIFICATION SYSTEM
|
|
|
2. |
CHECK DTC OUTPUT (AIRBAG SYSTEM) |
(a) Clear the DTCs.
Click here
Body Electrical > SRS Airbag > Clear DTCs
(b) Check for DTCs.
Click here
Body Electrical > SRS Airbag > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
GO TO AIRBAG SYSTEM
|
|
|
3. |
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 / Occupant Detection / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Occupant Detection > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Passenger Buckle SW |
Front passenger buckle switch |
Unset, Set or NG |
Unset: Seat belt not fastened Set: Seat belt fastened NG: Data is not determined |
- |
Body Electrical > Occupant Detection > Data List
|
Tester Display |
|---|
|
Passenger Buckle SW |
|
Result |
Proceed to |
|---|---|
|
Unset or Set is displayed on the Techstream according to the front passenger seat belt condition |
A |
|
Unset or Set is not displayed correctly on the Techstream according to the front passenger seat belt condition |
B |
|
NG is displayed on the Techstream |
C |
| B |
|
REPLACE FRONT SEAT INNER BELT ASSEMBLY RH for Power Seat: Click here
for Manual Seat: Click here
|
| C |
|
REPLACE OCCUPANT DETECTION ECU
|
|
|
4. |
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 / SRS Airbag / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > SRS Airbag > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Right side Buckle SW |
RH buckle switch |
Unset, Set or NG |
Unset: Seat belt not fastened Set: Seat belt fastened NG: Data is not determined |
- |
Body Electrical > SRS Airbag > Data List
|
Tester Display |
|---|
|
Right side Buckle SW |
|
Result |
Proceed to |
|---|---|
|
Unset or Set is displayed on the Techstream according to the front passenger seat belt condition |
A |
|
|
B |
| A |
|
| B |
|
REPLACE AIRBAG ECU ASSEMBLY
|
|
|