Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000017QI005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1163/82; Short to B+ in Curtain Shield Squib RH Circuit; 2007 MY LX470 [08/2006 -        ]

DTC

B1163/82

Short to B+ in Curtain Shield Squib RH Circuit

DESCRIPTION

The curtain shield squib RH circuit consists of the center airbag sensor and the curtain shield airbag RH.

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

DTC B1163/82 is recorded when a B+ short is detected in the curtain shield squib RH circuit.

DTC No.

DTC Detection Condition

Trouble Area

B1163/82
  • Short in curtain shield squib RH circuit (to B+)
  • Curtain shield squib RH malfunction
  • Center airbag sensor assembly malfunction
  • Curtain shield airbag assembly RH (Curtain shield squib RH)
  • Center airbag sensor assembly
  • No. 2 floor wire

WIRING DIAGRAM

Refer to DTC B1160/83 2007 MY LX470 [08/2006 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1160/83; Short in Curtain Shield Squib RH Circuit+ .

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK NO. 2 FLOOR WIRE (CURTAIN SHIELD SQUIB RH WIRE)

(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 curtain shield airbag RH.

(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 ICR+ of the C38 No. 2 floor wire connector on the curtain shield airbag RH (curtain shield squib RH) side.

Standard voltage:

Below 1 V
NG

REPAIR OR REPLACE NO. 2 FLOOR WIRE

OK

2.

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) Using a service wire, connect ICR+ and ICR- of the C38 No. 2 floor wire connector on the curtain shield airbag RH (curtain shield squib RH) side.

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

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

(g) Clear the DTC stored in memory 2007 MY LX470 [08/2006 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

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

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

(j) Check the DTC 2007 MY LX470 [08/2006 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

OK:

DTC B1163/82 is not output.

HINT:

Codes other than code B1163/82 may be output at this time, but they are not relevant to this check.
NG

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK

3.

CHECK CURTAIN SHIELD SQUIB RH

(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 curtain shield airbag RH (curtain shield squib RH) connector.

(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 2007 MY LX470 [08/2006 -        ]; 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 2007 MY LX470 [08/2006 -        ]; SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: DTC CHECK / CLEAR .

OK:

DTC B1163/82 is not output.

HINT:

Codes other than code B1163/82 may be output at this time, but they are not relevant to this check.
NG

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH (CURTAIN SHIELD SQUIB RH)

OK

USE SIMULATION METHOD TO CHECK