DESCRIPTION
When the ignition switch is turned ON, the occupant detection ECU sends signals 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 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:
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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.
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If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.
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PROCEDURE
1. |
CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) |
(a) Clear the DTCs.
Click here
Body Electrical > Occupant Detection > Clear DTCs(b) Check for DTCs.
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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 |
- |
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 |
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 |
- |
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 |
USE SIMULATION METHOD TO CHECK |
B |
REPLACE AIR BAG SENSOR ASSEMBLY |
Toyota CH-R Service Manual > Lin Communication System: Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
The main body ECU (multiplex network body ECU) and certification ECU (smart key
ECU assembly) control the LIN communication system. LIN communication system data
and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector
3 (DLC3).
When the s ...
Toyota CH-R Service Manual > Outer Rear View Mirror: Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. INSTALL NO. 2 OUTER MIRROR COVER (w/ Illumination)
(a) Engage the claws to install the No. 2 outer mirror cover as shown in th ...