2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 514

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 B1850, B1851, B1852, B1853 or 62 is not output.

Text in Illustration

HINT

Codes other than DTC B1850, B1851, B1852, B1853 and 62 may be output at this time, but they are not related to this check.

NG -- CHECK FLOOR WIRE (REAR SIDE SQUIB RH CIRCUIT)

OK -- REPLACE REAR SEAT ASSEMBLY RH See: Body and Frame/Seats/Service and Repair/Removal and Replacement/Rear

Seat Assembly (for RH Side)/Removal

3. CHECK FLOOR WIRE (REAR SIDE SQUIB RH 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 C.

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

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

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

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 687

NOTICE:

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

SST : 09843-18040

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

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE

OK -- Continue to next step.

16. CHECK FLOOR WIRE (SHORT)

(a) Disconnect SST from connector C.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE

OK -- Continue to next step.

17. CHECK FLOOR WIRE (SHORT TO B+)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 666

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 B1925, B1926, B1927, B1928, or 78 is not output.

Text in Illustration

HINT

Codes other than DTC B1925, B1926, B1927, B1928, and 78 may be output at this time, but they are not related to this check.

NG -- CHECK NO. 2 FLOOR WIRE (REAR PRETENSIONER SQUIB LH CIRCUIT)

OK -- REPLACE REAR SEAT OUTER BELT ASSEMBLY LH See: Restraints and Safety Systems/Seat Belt Systems/Seat

Belt/Service and Repair/Removal and Replacement/Rear Seat Outer Belt Assembly/Removal

1. CHECK NO. 2 FLOOR WIRE (REAR PRETENSIONER SQUIB LH 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 C.

(d) Disconnect the No. 2 floor 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).

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 407

NOTICE:

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

(c) Check that the connectors are properly connected to the steering pad, spiral cable and center airbag sensor assembly.

OK:

The connectors are properly connected.

HINT

If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

(d) Disconnect the connectors from the steering pad, spiral cable and center airbag sensor assembly.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

(f) Check that the spiral cable connector (on the steering pad side) is not damaged.

OK:

The lock button is not disengaged, or the claw of the lock is not deformed or damaged.

(g) Check that the short springs for the instrument panel wire and spiral cable with the activation prevention mechanism are not deformed

or damaged.

OK:

The short springs are not deformed or damaged.

Text in Illustration

NG -- REPLACE WIRE HARNESS

OK -- Continue to next step.

2. CHECK STEERING PAD (DRIVER SIDE SQUIB)

(a) Connect the instrument panel wire to the center airbag sensor assembly and spiral cable.

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

CAUTION:

Never connect the tester to the steering pad (driver side 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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 436

NOTICE:

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

(c) Check that the connectors are properly connected to the steering pad, spiral cable and center airbag sensor assembly.

OK:

The connectors are properly connected.

HINT

If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

(d) Disconnect the connectors from the steering pad, spiral cable and center airbag sensor assembly.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

(f) Check that the spiral cable connector (on the steering pad side) is not damaged.

OK:

The lock button is not disengaged, and the claw of the lock is not deformed or damaged.

(g) Check that the short springs for the instrument panel wire and spiral cable with the activation prevention mechanism are not deformed

or damaged.

OK:

The short springs are not deformed or damaged.

Text in Illustration

NG -- REPLACE WIRE HARNESS

OK -- Continue to next step.

2. CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP)

(a) Connect the instrument panel wire to the center airbag sensor assembly and spiral cable.

(b) Connect SST (resistance 2.1 Ohms) to connector E (black connector).

CAUTION:

Never connect the tester to the steering pad (driver side squib 2nd step) 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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 194

NOTICE:

If refrigerant pressure on the high pressure line is excessive, this DTC will be set. Therefore, it is necessary to measure the voltage

over a period of time (approximately 10 minutes) because this DTC may be set after the A/C has been operating for a while.

HINT

* When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient

temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the

inspection in a warm indoor environment.

* If refrigerant pressure is not normal after replacing the expansion valve with a new or a known good one, the condenser or

pipes may be clogged with dirt, dust or other contaminants. In this case, clean or replace the condenser or pipes.

Result:

B -- REPLACE CONDENSER See: Heating and Air Conditioning/Condenser HVAC/Service and Repair/Removal and

Replacement/Removal

A -- END

1. REPLACE A/C PRESSURE SENSOR

(a) Replace the A/C pressure sensor See: Heating and Air Conditioning/Refrigerant Pressure Sensor / Switch/Service and

Repair/Removal.

HINT

Since the A/C pressure sensor cannot be inspected while it is removed from the vehicle, replace the A/C pressure sensor with a

new or a known good one and check that the condition returns to normal.

NEXT -- Continue to next step.

2. RECHECK FOR DTC

(a) Recheck for the DTC when the following conditions are satisfied.

NOTICE:

If refrigerant pressure on the high pressure line is excessive, this DTC will be set. Therefore, it is necessary to measure the voltage

over a period of time (approximately 10 minutes) because this DTC may be set after the A/C has been operating for a while.

HINT

When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient

temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the

inspection in a warm indoor environment.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 488

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:

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

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

Standard Resistance:

(h) Check for a short in the circuit.

(1) Release the activation prevention mechanism built into connector B See: Restraints and Safety Systems/Air Bag Systems/Testing

and Inspection/Initial Inspection and Diagnostic Overview/Diagnosis System.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

2. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Restore the released activation prevention mechanism of connector B to the original condition.

(b) Connect the connectors to the curtain shield airbag assembly LH and center airbag sensor assembly.

(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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 771

NOTICE:

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

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

30. CHECK SIDE AIRBAG SENSOR LH (FOR REAR SIDE)

(a) Connect the connectors to the rear airbag sensor LH and center airbag sensor assembly.

(b) Interchange the side airbag sensor RH (for rear side) with side airbag sensor LH (for rear side) and connect the connectors.

(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 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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 523

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 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 B1855, B1856, B1857, B1858 or 63 is not output.

Text in Illustration

HINT

Codes other than DTC B1855, B1856, B1857, B1858 and 63 may be output at this time, but they are not related to this check.

NG -- CHECK NO. 2 FLOOR WIRE (REAR SIDE SQUIB LH CIRCUIT)

OK -- REPLACE REAR SEAT ASSEMBLY LH See: Body and Frame/Seats/Service and Repair/Removal and Replacement/Rear

Seat Assembly (for LH Side)/Removal

3. CHECK NO. 2 FLOOR WIRE (REAR SIDE SQUIB LH 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 C.

(d) Disconnect the No. 2 floor wire from the center airbag sensor assembly.

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

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

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 203

NOTICE:

If refrigerant pressure on the high pressure line is excessive, this DTC will be set. Therefore, it is necessary to measure the voltage

over a period of time (approximately 10 minutes) because this DTC may be set after the A/C has been operating for a while.

HINT

* When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient

temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the

inspection in a warm indoor environment.

* If refrigerant pressure is not normal after replacing the expansion valve with a new or a known good one, the condenser or

pipes may be clogged with dirt, dust or other contaminants. In this case, clean or replace the condenser or pipes.

Result:

B -- REPLACE CONDENSER See: Heating and Air Conditioning/Condenser HVAC/Service and Repair/Removal and

Replacement/Removal

A -- END

1. REPLACE A/C PRESSURE SENSOR

(a) Replace the A/C pressure sensor See: Heating and Air Conditioning/Refrigerant Pressure Sensor / Switch/Service and

Repair/Removal.

HINT

Since the A/C pressure sensor cannot be inspected while it is removed from the vehicle, replace the A/C pressure sensor with a

new or a known good one and check that the condition returns to normal.

NEXT -- Continue to next step.

2. RECHECK FOR DTC

(a) Recheck for the DTC when the following conditions are satisfied.

NOTICE:

If refrigerant pressure on the high pressure line is excessive, this DTC will be set. Therefore, it is necessary to measure the voltage

over a period of time (approximately 10 minutes) because this DTC may be set after the A/C has been operating for a while.

HINT

When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient

temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the

inspection in a warm indoor environment.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 767

NOTICE:

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

SST : 09843-18040

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

23. CHECK NO. 2 FLOOR WIRE (SHORT)

(a) Disconnect SST from connector B.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

24. CHECK NO. 2 FLOOR WIRE (SHORT TO B+)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 607

NOTICE:

* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using Techstream and write

them down before removal.

* It is necessary to perform initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Initialization after registration See: Instrument Panel, Gauges

and Warning Indicators/Tire Monitoring System/Testing and Inspection/Programming and Relearning/Registration of the

transmitter IDs into the tire pressure warning ECU if the ECU has been replaced.

PROCEDURE

1. CONFIRM REGISTRATION CONDITION (REGISTERED ID CODES)

(a) Turn the engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG) and turn the tester on.

(d) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(e) Check the values by referring to the table below.

Tire Pressure Monitor

OK:

The registered transmitter ID codes are displayed on the tester screen.

NG -- PERFORM REGISTRATION (TRANSMITTER ID)

OK -- REPLACE TIRE PRESSURE WARNING ECU

2. PERFORM REGISTRATION (TRANSMITTER ID)

(a) Register the transmitter IDs for all the wheels See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Registration.

NEXT -- Continue to next step.

3. CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

(a) Turn the engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG) and turn the tester on.

(d) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(e) Check the values by referring to the table below.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 647

NOTICE:

* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the ECU using Techstream and write them

down before removal.

* It is necessary to perform initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Initialization after registration See: Instrument Panel, Gauges

and Warning Indicators/Tire Monitoring System/Testing and Inspection/Programming and Relearning/Registration of the

transmitter IDs into the tire pressure warning ECU if the ECU has been replaced.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)

(a) Disconnect the F53 ECU connector.

(b) Disconnect the P34 receiver connector.

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

Standard resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- Continue to next step.

2. CHECK TIRE PRESSURE WARNING ECU

(a) Reconnect the F53 ECU connector.

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 616

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 C.

(d) Disconnect the floor 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.

(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:

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

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

Standard Resistance:

(h) Check for a short in the circuit.

(1) Release the activation prevention mechanism built into connector B See: Restraints and Safety Systems/Air Bag Systems/Testing

and Inspection/Initial Inspection and Diagnostic Overview/Diagnosis System.

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 299

NOTICE:

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

(c) Check that the connectors are properly connected to the center airbag sensor assembly and front seat inner belt assembly LH.

OK:

The connectors are properly connected.

HINT

If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

(d) Disconnect the connectors from the center airbag sensor assembly and front seat inner belt assembly LH.

(e) Check that the terminals of connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

2. CHECK NO. 2 FLOOR WIRE (OPEN)

(a) Using SST, connect terminals 10 (LBE+) and 18 (LBE-) of connector B.

NOTICE:

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

SST : 09843-18040

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

3. CHECK NO. 2 FLOOR WIRE (SHORT)

(a) Disconnect SST from connector B.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 727

NOTICE:

When DTCs C2121/21 to C2125/25 are set, DTC C2173/73 may be set simultaneously. In such cases, troubleshoot C2173/73 first,

then troubleshoot DTCs C2121/21 to C2125/25.

HINT

It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because

it cannot be identified by the output DTC.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using Techstream and write

them down before removal.

* It is necessary to perform initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Initialization after registration See: Instrument Panel, Gauges

and Warning Indicators/Tire Monitoring System/Testing and Inspection/Programming and Relearning/Registration of the

transmitter IDs into the tire pressure warning ECU if the ECU and/or any of the valve and transmitters have been replaced.

PROCEDURE

1. READ OUTPUT DTC (DTC C2173/73)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 172

NOTICE:

When DTCs C2121/21 to C2125/25 are set, DTC C2173/73 may be set simultaneously. In such cases, troubleshoot C2173/73 first,

then troubleshoot DTCs C2121/21 to C2125/25.

HINT

It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because

it cannot be identified by the output DTC.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using Techstream and write

them down before removal.

* It is necessary to perform initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Programming and Relearning/Initialization after registration See: Instrument Panel, Gauges

and Warning Indicators/Tire Monitoring System/Testing and Inspection/Programming and Relearning/Registration of the

transmitter IDs into the tire pressure warning ECU if the ECU and/or any of the valve and transmitters have been replaced.

PROCEDURE

1. READ OUTPUT DTC (DTC C2173/73)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 759

NOTICE:

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

SST : 09843-18040

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

9. CHECK NO. 2 FLOOR WIRE (SHORT)

(a) Disconnect SST from connector C.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE NO. 2 FLOOR WIRE

OK -- Continue to next step.

10. CHECK NO. 2 FLOOR WIRE (SHORT TO B+)

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 275

NOTICE:

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

SST : 09843-18040

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

Standard Resistance:

Text in Illustration

NG -- CHECK NO. 2 FLOOR WIRE (OPEN)

OK -- Continue to next step.

4. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (SHORT)

(a) Disconnect SST from connector B.

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

Standard Resistance:

Text in Illustration

NG -- CHECK NO. 2 FLOOR WIRE (SHORT)

OK -- Continue to next step.

5. CHECK OCCUPANT CLASSIFICATION SYSTEM CIRCUIT (SHORT TO B+)

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 140

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor.

(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(f) Check the value(s) by referring to the table below.

Air Conditioner

OK:

The display is as specified in the Normal Condition column.

Result:

C -- REPLACE A/C AMPLIFIER

B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE See: Heating and Air

Conditioning/Testing and Inspection/Symptom Related Diagnostic Procedures

A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - BODY GROUND)

(a) Disconnect the smog ventilation sensor connector.

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