2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 448

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- Continue to next step.

4. CHECK INSTRUMENT PANEL WIRE ASSEMBLY

(a) 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:

(b) Check for an open in the circuit.

(1) Turn the engine switch off.

(2) 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.

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

Standard Resistance:

(c) Check for a short to ground in the circuit.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(d) Check for a short in the circuit.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 553

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- Continue to next step.

2. CHECK DRIVER SIDE KNEE AIRBAG ASSEMBLY (DRIVER SIDE KNEE AIRBAG SQUIB)

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

(b) Connect SST (resistance 2.1 Ohms) to connector C.

CAUTION:

Never connect the tester to the driver side knee airbag assembly (driver side knee airbag squib) for measurement, as this may lead

to a serious injury due to airbag deployment.

NOTICE:

* Do not forcibly insert SST into the terminals of the connector when connecting.

* Insert SST straight into the terminals of the connector.

SST : 09843-18061

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

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

(e) Clear the DTCs stored in the memory See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Reading and

Clearing Diagnostic Trouble Codes/DTC Check / Clear.

(f) Turn the engine switch off.

(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 B1860, B1861, B1862, B1863 or 64 is not output.

Text in Illustration

HINT

Codes other than DTC B1860, B1861, B1862, B1863 and 64 may be output at this time, but they are not related to this check.

NG -- CHECK INSTRUMENT PANEL WIRE (DRIVER SIDE KNEE AIRBAG SQUIB CIRCUIT)

OK -- REPLACE DRIVER SIDE KNEE AIRBAG ASSEMBLY See: Restraints and Safety Systems/Air Bag Systems/Air

Bag/Service and Repair/Removal and Replacement/Knee Airbag Assembly (for Driver Side)/Removal

3. CHECK INSTRUMENT PANEL WIRE (DRIVER SIDE KNEE AIRBAG SQUIB CIRCUIT)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 816

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE ENGINE ROOM MAIN WIRE

10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

(a) Disconnect the instrument panel wire connector from the engine room main wire.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE ENGINE ROOM MAIN WIRE

Up to 08/2009

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2121/21-C2125/25,C2181/81-C2185/85: No Signal from

Transmitter ID1

C2185/85 - Transmitter ID5 not Received (Test Mode DTC)

DESCRIPTION

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the tire pressures. The measured values

are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The

ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the

warning light in the combination meter turns on.

The tire pressure warning valve and transmitters constantly send radio waves to the tire pressure warning antenna and receiver.

Under the conditions below, the tire pressure warning antenna and receiver may be unable to receive the signals from the tire pressure warning valve

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 562

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- Continue to next step.

2. CHECK FRONT PASSENGER SIDE KNEE AIRBAG ASSEMBLY (FRONT PASSENGER SIDE KNEE AIRBAG SQUIB)

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

(b) Connect SST (resistance 2.1 Ohms) to connector C.

CAUTION:

Never connect the tester to the front passenger side knee airbag assembly (front passenger side knee airbag squib) for

measurement, as this may lead to a serious injury due to airbag deployment.

NOTICE:

* Do not forcibly insert SST into the terminals of the connector when connecting.

* Insert SST straight into the terminals of the connector.

SST : 09843-18061

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

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

(e) Clear the DTCs stored in the memory See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Reading and

Clearing Diagnostic Trouble Codes/DTC Check / Clear.

(f) Turn the engine switch off.

(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 B1865, B1866, B1867, B1868, or 65 is not output.

Text in Illustration

HINT

Codes other than DTC B1865, B1866, B1867, B1868, and 65 may be output at this time, but they are not related to this check.

NG -- CHECK INSTRUMENT PANEL WIRE (FRONT PASSENGER SIDE KNEE AIRBAG SQUIB CIRCUIT)

OK -- REPLACE FRONT PASSENGER SIDE KNEE AIRBAG ASSEMBLY See: Restraints and Safety Systems/Air Bag

Systems/Air Bag/Service and Repair/Removal and Replacement/Knee Airbag Assembly (for Front Passenger Side)/Removal

3. CHECK INSTRUMENT PANEL WIRE (FRONT PASSENGER SIDE KNEE AIRBAG SQUIB CIRCUIT)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 419

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- Continue to next step.

6. CHECK INSTRUMENT PANEL WIRE ASSEMBLY

(a) 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:

(b) Check for an open in the circuit.

(1) Turn the engine switch off.

(2) 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.

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

Standard Resistance:

(c) Check for a short to ground in the circuit.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(d) Check for a short in the circuit.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 844

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE ENGINE ROOM MAIN WIRE

10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

(a) Disconnect the instrument panel wire connector from the engine room main wire.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE ENGINE ROOM MAIN WIRE

Up to 08/2009

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2121/21-C2125/25,C2181/81-C2185/85: No Signal from

Transmitter ID1

C2185/85 - Transmitter ID5 not Received (Test Mode DTC)

DESCRIPTION

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the tire pressures. The measured values

are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The

ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the

warning light in the combination meter turns on.

The tire pressure warning valve and transmitters constantly send radio waves to the tire pressure warning antenna and receiver.

Under the conditions below, the tire pressure warning antenna and receiver may be unable to receive the signals from the tire pressure warning valve