Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM10000000289WG |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for TMMMS Made): B179317; Load Sensor for Occupant Detection System Circuit Voltage Above Threshold; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
DTC
|
B179317
|
Load Sensor for Occupant Detection System Circuit Voltage Above Threshold
|
DESCRIPTION
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
B179317
|
Load Sensor for Occupant Detection System Circuit Voltage Above Threshold
|
When the detections voltage higher than specified value after supplying power to the sensor.
|
-
Harness or connector
-
Airbag sensor assembly
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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 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
|
OK
|
|
|
(a) Disconnect the airbag sensor assembly connector.
|
|
*1
|
Separate Type Front Seat Cushion Spring Assembly RH
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
|
|
(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
|
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - AUXILIARY BATTERY)
|
(a) Disconnect the airbag sensor assembly connector.
|
|
*a
|
Front view of wire harness connector
(to Airbag Sensor Assembly)
|
|
|
(b) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
(d) Operate all components of the electrical systems (defogger, wipers, headlights, heater blower, etc.).
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
I47-36 (IGR) - Body ground
|
Ignition switch ON
|
8 to 16 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH)
|
(a) Turn the ignition switch to ON.
|
|
*1
|
Separate Type Front Seat Cushion Spring Assembly RH
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
*a
|
Front view of wire harness connector
(to Airbag Sensor Assembly)
|
*b
|
Front view of wire harness connector
(to Separate Type Front Seat Cushion Spring Assembly RH (Front Occupant Classification Sensor LH))
|
*c
|
Front view of wire harness connector
(to Separate Type Front Seat Cushion Spring Assembly RH (Rear Occupant Classification Sensor LH))
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
O17-24 (SVC) - Body ground
|
Ignition switch ON
|
Below 1 V
|
j6-1 (SVC) - Body ground
|
Ignition switch ON
|
Below 1 V
|
j7-1 (SVC) - Body ground
|
Ignition switch ON
|
Below 1 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|