DESCRIPTION
When the ignition switch is ON, the occupant detection ECU sends a signal to the airbag sensor assembly to indicate the state of the front seat inner belt assembly RH and also whether the front passenger seat is occupied. The airbag sensor assembly sends those signals to the combination meter assembly via CAN communication. The combination meter assembly illuminates, blinks or turns off the seat belt warning light on the combination meter assembly in accordance with these signals.
HINT:
The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The seat belt warning system uses the CAN communication system. First, confirm
that there is no malfunction in the CAN communication system. Refer to the How to
Proceed with Troubleshooting procedure (See page
).
PROCEDURE
1. |
CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) |
(a) Clear DTCs (See page ).
(b) Recheck for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is output |
B |
B | ![]() |
GO TO OCCUPANT CLASSIFICATION SYSTEM |
|
2. |
CHECK DTC OUTPUT (AIRBAG SYSTEM) |
(a) Clear DTCs (See page ).
(b) Recheck for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is 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.
Occupant Detection
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Passenger Buckle SW |
Front passenger side buckle switch / Unset, Set or NG |
Unset: Front passenger side seat belt unfastened Set: Front passenger side seat belt fastened NG: Condition undetermined |
- |
Result |
Proceed to |
---|---|
Unset or Set is displayed on the Techstream screen according to the front passenger seat belt condition |
A |
Unset or Set is not displayed normally on the Techstream screen according to the front passenger seat belt condition |
B |
NG is displayed on the Techstream screen |
C |
B | ![]() |
REPLACE FRONT SEAT INNER BELT ASSEMBLY RH |
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.
SRS Airbag
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Right side Buckle SW |
Front RH side seat belt buckle switch / Unset, Set or NG |
Unset: Seat belt unfastened Set: Seat belt fastened NG: Condition undetermined |
- |
Result |
Proceed to |
---|---|
Unset or Set is displayed on the Techstream screen according to the front passenger seat belt condition |
A |
|
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
B | ![]() |
REPLACE AIRBAG SENSOR ASSEMBLY |
Assist grips
An assist grip (type A) installed on the ceiling can be used to support
your body while sitting on the seat.
An assist grip (type B) installed on the pillar can be used when getting in
or out of the vehicle and others.
1. Assist grip (type A)
2. Assi ...
Engine Immobiliser System Malfunction (B2799)
DESCRIPTION
This DTC is stored when one of the following occurs: 1) the ECM detects errors
in its own communications with the transponder key ECU assembly; 2) the ECM detects
errors in the communication lines; or 3) the ECU - ECM communication ID between ...