- Seat belt buckle switch LH circuit malfunction
| Last Modified: 6-7-2017 | 6.8:8.0.40 | Doc ID: RM000001D3Y000X |
| Model Year Start: 2006 | Model: Land Cruiser | Prod Date Range: [05/2005 - 01/2006] |
| Title: SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B0126/27,B0127/27; Seat Belt Buckle Switch LH Circuit Malfunction; 2006 MY Land Cruiser [05/2005 - 01/2006] | ||
|
DTC |
B0126/27 |
Seat Belt Buckle Switch LH Circuit Malfunction |
|
DTC |
B0127/27 |
Seat Belt Buckle Switch LH Malfunction |
DESCRIPTION
The seat belt buckle switch LH circuit consists of the center airbag sensor and the front seat inner belt LH (seat belt buckle switch LH). DTC B0126/27 is recorded when a malfunction is detected in the seat belt buckle switch LH circuit.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B0126/B0127/27 |
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK WIRE HARNESS (TO GROUND) |
|
(a) Turn the ignition switch to LOCK. (b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. (c) Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor. Standard resistance: 1 MΩor higher |
|
| NG |
|
|
|
2. |
CHECK WIRE HARNESS (TO +B) |
|
(a) Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds. (b) Turn the ignition switch to ON. (c) Measure the voltage between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor. Standard voltage: Below 1 V |
|
| NG |
|
|
|
3. |
CHECK FRONT SEAT INNER BELT ASSEMBLY LH |
|
(a) Connect the connector of the front seat inner belt LH (seat belt buckle switch LH). (b) Unlock the seat belt for the driver's seat. (c) Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor. Standard resistance: 1 kΩ to 1.6 kΩ |
|
| NG |
|
|
|
4. |
CHECK FRONT SEAT INNER BELT ASSEMBLY LH |
|
(a) Lock the seat belt for the driver's seat. (b) Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor. Standard resistance: 100 Ω to 500 Ω |
|
| NG |
|
|
|
5. |
CHECK CENTER AIRBAG SENSOR ASSEMBLY |
|
(a) Turn the ignition switch to LOCK. (b) Disconnect the negative (-) terminal cable from the battery, and wait at least for 90 seconds. (c) Connect the connector to the center airbag sensor. (d) Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds. (e) Turn the ignition switch to ON, and wait at least for 10 seconds. (f)
Clear the DTC stored in memory
(g) Turn the ignition switch to LOCK, and wait at least for 10 seconds. (h) Turn the ignition switch to ON, and wait at least for 10 seconds. (i)
Check the DTC
OK: DTC B0126/B0127/27 is not output. |
|
![2006 MY Land Cruiser [05/2005 - ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR](../../../../stylegraphics/info.gif "2006 MY Land Cruiser [05/2005 - ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR")
| NG |
|
| OK |
|
|
6. |
CHECK FRONT SEAT WIRE LH (TO GROUND) |
|
(a) Disconnect the front seat wire LH connector from the No. 1 floor wire. (b) Measure the resistance between the body ground and LBE+ of the front seat wire LH connector on the No. 1 floor wire side. Standard resistance: 1 MΩor higher |
|
| NG |
|
| OK |
|
|
7. |
CHECK FRONT SEAT WIRE LH (TO +B) |
|
(a) Turn the ignition switch to LOCK. (b) Disconnect the negative (-) terminal cable from the battery, and wait at least for 90 seconds. (c) Disconnect the front seat wire LH connector from the No. 1 floor wire. (d) Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds. (e) Turn the ignition switch to ON. (f) Measure the voltage between the body ground and LBE+ of the front seat wire LH connector on the No. 1 floor wire side. Standard voltage: Below 1 V |
|
| NG |
|
| OK |
|
|
|