2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 215

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 179

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 536

DESCRIPTION

INSPECTION PROCEDURE

HINT

After the inspection is completed, clear the DTCs.

PROCEDURE

1. CHECK DISC

(a) Check that the disc is not deformed or cracked.

OK:

No deformation or cracks on the disc

NG -- CHANGE DISC

OK -- Continue to next step.

2. DISC CLEANING

(a) Disc cleaning

(1) If dirt is on the disc surface, wipe it clean with a soft cloth from the inside to the outside in a radial direction.

NOTICE:

Do not use a conventional record cleaner or anti-static preservative.

NEXT -- Continue to next step.

3. CLEAR DTC

(a) Clear the DTCs See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Testing and Inspection/Reading and

Clearing Diagnostic Trouble Codes/Audio and Visual System (w/o Navigation System).

NEXT -- Continue to next step.

4. RECHECK FOR DTC

(a) Recheck for DTCs and check if the same trouble occurs again.

OK:

Malfunction disappears.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 248

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 157

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 406

DESCRIPTION

* The driver side squib circuit consists of the center airbag sensor assembly, spiral cable and steering pad.

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

* These DTCs are recorded when a malfunction is detected in the driver side squib circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT

* Perform the simulation method by selecting the check mode (Signal Check) using the Techstream See: Restraints and Safety

Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Check Mode Procedure.

* After selecting the check mode (Signal Check), perform the simulation method by wiggling each connector of the airbag

system or driving the vehicle on a city or rough road See: Accessories and Optional Equipment/Antitheft and Alarm

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

PROCEDURE

1. CHECK CONNECTORS

(a) Turn the engine switch off.

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 860

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 233

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 734

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

and transmitters, causing a DTC to be stored.

* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

* Devices using similar radio frequencies are used in the vehicle.

* The ID of the tire pressure warning valve and transmitter is mistyped during registration.

* A tire/wheel/transmitter from a different vehicle is installed.

HINT

When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle

speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a

total of 20 minutes, DTCs will be set.

DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter

sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve

and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test

mode.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 461

DESCRIPTION

The side squib RH circuit consists of the center airbag sensor assembly and front seat side airbag assembly RH.

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

These DTCs are recorded when a malfunction is detected in the side squib RH circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT

* Perform the simulation method by selecting the Check Mode (Signal Check) using the Techstream See: Restraints and Safety

Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Check Mode Procedure.

* After selecting the Check Mode (Signal Check), perform the simulation method by wiggling each connector of the airbag

system or driving the vehicle on a city or rough road See: Accessories and Optional Equipment/Antitheft and Alarm

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

PROCEDURE

1. CHECK CONNECTORS

(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) Check that the connectors are properly connected to the front seat side airbag assembly RH and center airbag sensor assembly.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 435

DESCRIPTION

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

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

* These DTCs are recorded when a malfunction is detected in the driver side squib 2nd step circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT

* Perform the simulation method by selecting the Check Mode (Signal Check) using the Techstream See: Restraints and Safety

Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Check Mode Procedure.

* After selecting the Check Mode (Signal Check), perform the simulation method by wiggling each connector of the airbag

system or driving the vehicle on a city or rough road See: Accessories and Optional Equipment/Antitheft and Alarm

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

PROCEDURE

1. CHECK CONNECTORS

(a) Turn the engine switch off.

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