Last Modified: 4-30-2014 6.6 C Doc ID: RM0000017QX001X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1183/22; Short to B+ in Driver Side Squib 2nd Step Circuit; 2006 MY LX470 [05/2005 -        ]

DTC

B1183/22

Short to B+ in Driver Side Squib 2nd Step Circuit

DESCRIPTION

The driver side squib (2nd step) circuit consists of the center airbag sensor, the spiral cable and the steering wheel pad.

The circuit instructs the SRS to deploy when deployment conditions are met.

DTC B1183/22 is recorded when a B+ short is detected in the driver side squib (2nd step) circuit.

DTC No.

DTC Detection Condition

Trouble Area

B1183/22
  • Short in driver side squib (2nd step) circuit (to B+)
  • Driver side squib (2nd step) malfunction
  • Spiral cable malfunction
  • Center airbag sensor assembly malfunction
  • Steering wheel pad (driver side squib (2nd step))
  • Spiral cable
  • Center airbag sensor assembly
  • Dash wire
  • Column wire

WIRING DIAGRAM

Refer to DTC B1180/17 2006 MY LX470 [05/2005 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1180/17; Short in Driver Side Squib 2nd Step Circuit+ .

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK DRIVER SIDE SQUIB (2ND STEP) CIRCUIT

(a) Turn the ignition switch to LOCK.

(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

(c) Disconnect the connectors from the center airbag sensor and the steering wheel pad.

(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 D2+ of the black connector on the steering wheel pad (driver side squib (2nd step)) side between the center airbag sensor and the steering wheel pad (driver side squib (2nd step)).

Standard voltage:

Below 1 V
NG

GO TO STEP 4

OK

2.

CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Connect the connector to the center airbag sensor.

(b) Using a service wire, connect D2+ and D2- of the black connector on the steering wheel pad (driver side squib (2nd step)) side between the center airbag sensor and the steering wheel pad (driver side squib (2nd step)).

(c) Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 10 seconds.

(e) Clear the DTC stored in memory 2006 MY LX470 [05/2005 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

(f) Turn the ignition switch to LOCK, and wait at least for 10 seconds.

(g) Turn the ignition switch to ON, and wait at least for 10 seconds.

(h) Check the DTC 2006 MY LX470 [05/2005 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

OK:

DTC B1183/22 is not output.

HINT:

Codes other than code B1183/22 may be output at this time, but they are not relevant to this check.
NG

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK

3.

CHECK DRIVER SIDE SQUIB (2ND STEP)

(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 steering wheel pad (driver side squib (2nd step)) to the spiral cable.

(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 2006 MY LX470 [05/2005 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

(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 2006 MY LX470 [05/2005 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

OK:

DTC B1183/22 is not output.

HINT:

Codes other than code B1183/22 may be output at this time, but they are not relevant to this check.
NG

REPLACE STEERING WHEEL PAD (DRIVER SIDE SQUIB (2ND STEP))

OK

USE SIMULATION METHOD TO CHECK

4.

CHECK SPIRAL CABLE

(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 spiral cable connector from the column 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 D2+ of the black spiral cable connector on the steering wheel pad (driver side squib (2nd step)) side.

Standard voltage:

Below 1 V
NG

REPLACE SPIRAL CABLE

OK

5.

CHECK COLUMN WIRE

(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 column wire connector from the dash 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 D2+ of the C29 column wire connector on the spiral cable side.

Standard voltage:

Below 1 V
NG

REPAIR OR REPLACE COLUMN WIRE

OK

6.

CHECK DASH WIRE

(a) Turn the ignition switch to ON.

(b) Measure the voltage between the body ground and D2+ of the dash wire connector on the column wire side.

Standard voltage:

Below 1 V
NG

REPAIR OR REPLACE DASH WIRE

OK

USE SIMULATION METHOD TO CHECK