- Harness or connector
- Separate type front seat cushion spring assembly RH (front occupant classification sensor LH)
- Airbag sensor assembly
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000289WI |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for TMMMS Made): LIN Communication Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
LIN Communication Circuit |
DESCRIPTION
|
Error Code |
Detection Item |
Detection Condition |
Trouble Area |
|---|---|---|---|
|
17 |
FI LIN Communication Lost |
When a communication malfunction with the load sensor is detected |
|
|
18 |
RI LIN Communication Lost |
When a communication malfunction with the load sensor is detected |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: BEFORE DISCONNECTING BATTERY](/t3Portal/stylegraphics/info.gif)
HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
Click here
-
After replacing the airbag sensor assembly or separate type front seat cushion spring assembly RH, refer to work procedure.
Click here
HINT:
- If it is difficult to perform troubleshooting (wire harness inspection), remove the front passenger seat installation bolts to see under the seat cushion.
- In the above case, lift and hold the seat so that it does not fall down. Hold the seat only as necessary because holding the seat for a long period of time may cause seat rail deformation.
PROCEDURE
|
1. |
CHECK ERROR CODE |
(a) Check the Error Code.
|
Result |
Proceed to |
|---|---|
|
Error code 17 is output |
A |
|
Error code 18 is output |
B |
|
Error code 17 and 18 are output |
C |
| B |
|
| C |
|
|
|
2. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
(c) Check that the connectors are properly connected to the airbag sensor assembly and separate type front seat cushion spring assembly RH (front occupant classification sensor LH).
OK:
The connectors are properly connected.
| NG |
|
CONNECT CONNECTORS PROPERLY |
|
|
3. |
CHECK CONNECTORS |
|
(a) Disconnect the airbag sensor assembly connector. |
|
(b) Disconnect the separate type front seat cushion spring assembly RH (front occupant classification sensor LH) connector.
(c) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
REPLACE SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH |
(a) Connect the airbag sensor assembly connector.
(b) Replace the separate type front seat cushion spring assembly RH with a new one.
Click here
|
|
6. |
PERFORM ZERO POINT CALIBRATION |
(a) Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".
Click here
| NEXT |
|
END |
|
7. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
(c) Check that the connectors are properly connected to the airbag sensor assembly and separate type front seat cushion spring assembly RH (rear occupant classification sensor LH).
OK:
The connectors are properly connected.
| NG |
|
CONNECT CONNECTORS PROPERLY |
|
|
8. |
CHECK CONNECTORS |
|
(a) Disconnect the airbag sensor assembly connector. |
|
(b) Disconnect the separate type front seat cushion spring assembly RH (rear occupant classification sensor LH) connector.
(c) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10. |
REPLACE SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH |
(a) Connect the airbag sensor assembly connector.
(b) Replace the separate type front seat cushion spring assembly RH with a new one.
Click here
|
|
11. |
PERFORM ZERO POINT CALIBRATION |
(a) Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".
Click here
| NEXT |
|
END |
|
12. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
(c) Check that the connectors are properly connected to the airbag sensor assembly and separate type front seat cushion spring assembly RH.
OK:
The connectors are properly connected.
| NG |
|
CONNECT CONNECTORS PROPERLY |
|
|
13. |
CHECK CONNECTORS |
|
(a) Disconnect the airbag sensor assembly connector. |
|
(b) Disconnect the separate type front seat cushion spring assembly RH connector.
(c) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
14. |
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
15. |
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
16. |
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH) |
|
(a) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. |
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O17-32 (SIG) - Body ground |
Ignition switch ON |
Below 1 V |
|
j6-2 (SIG) - Body ground |
Ignition switch ON |
Below 1 V |
|
j7-2 (SIG) - Body ground |
Ignition switch ON |
Below 1 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
17. |
REPLACE AIRBAG SENSOR ASSEMBLY |
(a) Connect the separate type front seat cushion spring assembly RH connector.
(b) Replace the airbag sensor assembly with a new one.
Click here
|
|
18. |
PERFORM ZERO POINT CALIBRATION |
(a) Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".
Click here
| NEXT |
|
END |
|
|