2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 430

(g) Turn the engine switch on (IG), and wait for at least 60 seconds.

(h) Check for DTCs See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic

Trouble Codes/DTC Check / Clear.

OK:

DTC B1810, B1811, B1812, B1813 or 53 is not output.

Text in Illustration

HINT

Codes other than DTC B1810, B1811, B1812, B1813 and 53 may be output at this time, but they are not related to this check.

NG -- CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT

OK -- REPLACE STEERING PAD See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and Repair/Removal and

Replacement/Steering Pad/Removal

1. CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT

(a) Turn the engine switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

NOTICE:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Disconnect SST from connector E.

(d) Disconnect the instrument panel wire from the center airbag sensor assembly.

(e) Check for a short to B+ in the circuit.

(1) Connect the cable to the negative (-) battery terminal.

(2) Turn the engine switch on (IG).

(3) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(f) Check for an open in the circuit.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 401

(g) Turn the engine switch on (IG), and wait for at least 60 seconds.

(h) Check for DTCs See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic

Trouble Codes/DTC Check / Clear.

OK:

DTC B1800, B1801, B1802, B1803 or 51 is not output.

Text in Illustration

HINT

Codes other than DTC B1800, B1801, B1802, B1803 and 51 may be output at this time, but they are not related to this check.

NG -- CHECK DRIVER SIDE SQUIB CIRCUIT

OK -- REPLACE STEERING PAD See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and Repair/Removal and

Replacement/Steering Pad/Removal

3. CHECK DRIVER SIDE SQUIB CIRCUIT

(a) Turn the engine switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

NOTICE:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Disconnect SST from connector E.

(d) Disconnect the instrument panel wire from the center airbag sensor assembly.

(e) Check for a short to B+ in the circuit.

(1) Connect the cable to the negative (-) battery terminal.

(2) Turn the engine switch on (IG).

(3) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(f) Check for an open in the circuit.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 489

(g) Turn the engine switch on (IG), and wait for at least 60 seconds.

(h) Check for DTCs See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic

Trouble Codes/DTC Check / Clear.

OK:

DTC B1835, B1836, B1837, B1838 or 58 is not output.

Text in Illustration

HINT

Codes other than DTC B1835, B1836, B1837, B1838 and 58 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY See: Relays and Modules/Relays and Modules - Restraints and

Safety Systems/Air Bag Control Module/Service and Repair/Removal

OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting

From 08/2009

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1835/58-B1838/58: Short in Curtain Shield Squib LH Circuit

B1838/58 - Short to B+ in Curtain Shield Squib LH Circuit

DESCRIPTION

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

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

These DTCs are recorded when a malfunction is detected in the curtain shield squib LH circuit.