2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 150

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)

(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 / Trouble Codes.

(e) Read the DTCs.

Result:

NOTICE:

When DTC C2173/73 is output, troubleshoot that DTC first. Then troubleshoot DTCs C2121/21 to C2124/24.

B -- GO TO DTC C2173/73

A -- Continue to next step.

2. CHECK FREQUENCY RECEIVING CONDITION

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 377

HINT

* *: It may take about 2 or 3 minutes until the values are displayed.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

Result:

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU

From 08/2009

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2141/41-C2145/45: Transmitter ID1 Error

C2145/45 - Transmitter ID5 Error

DESCRIPTION

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

When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs will be output.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 381

HINT

* *: It may take about 2 or 3 minutes until the values are displayed.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

Result:

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU

Up to 08/2009

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2141/41-C2145/45: Transmitter ID1 Error

C2145/45 - Transmitter ID5 Error

DESCRIPTION

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

When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs will be output.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 749

HINT

Codes other than DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 may be output at this time, but they are not

related to this check.

C -- REPLACE REAR AIRBAG SENSOR LH

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

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

A -- 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

14. 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 side airbag sensor LH and rear airbag sensor 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 side airbag sensor LH and rear airbag sensor 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.

15. CHECK NO. 2 FLOOR WIRE (OPEN)

(a) Using SST, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.

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.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 384

HINT

* Before installing a new tire pressure warning valve and transmitter, read and write down its transmitter ID.

* The IDs for the tire pressure warning valve and transmitters that are not replaced should be checked using the tester and

recorded.

(b) Set the tire pressure to the specified value See: Maintenance/Wheels and Tires/Testing and Inspection/Component Tests and General

Diagnostics.

NEXT -- Continue to next step.

3. REGISTRATION OF TRANSMITTER ID

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

and Inspection/Programming and Relearning/Registration.

NEXT -- Continue to next step.

4. PERFORM INITIALIZATION

(a) Perform initialization See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Testing and

Inspection/Programming and Relearning/Initialization.

NEXT -- Continue to next step.

5. 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 152

HINT

*: It may take about 2 or 3 minutes until the values are displayed.

(g) Rapidly reduce the tire pressure for each wheel by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the DATA LIST.

NOTICE:

* It takes about 2 or 3 minutes to display the updated tire pressure data.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.

(i) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID5) has changed, repeat this procedure one by one.

Identify the transmitter that corresponds to the DTC.

Result:

C -- END

B -- CHECK TRANSMITTER ID

A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)

(a) Disconnect the F53 ECU connector.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 311

HINT

* *: It may take about 2 or 3 minutes until the values are displayed.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

Result:

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU

From 08/2009

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2141/41-C2145/45: Transmitter ID1 Error

C2145/45 - Transmitter ID5 Error

DESCRIPTION

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

When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs will be output.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 64

HINT

*1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the engine

switch on (IG) or (ACC), this DTC is stored.

NOTICE:

* Before starting troubleshooting, be sure to clear the DTCs stored due to the reason described in the HINT above. Then, check

for DTCs and troubleshoot according to the output DTCs.

* The radio receiver assembly is the master unit.

* Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

NOTICE:

Be sure to read Description before performing the following procedure.

PROCEDURE

1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

HINT

Refer to Radio Receiver Power Source Circuit See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Testing and Inspection/Component Tests and General Diagnostics/Radio Receiver Power Source Circuit.

If the power source circuit is operating normally, proceed to the next step.

NEXT -- Continue to next step.

2. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the radio receiver assembly connectors.

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 580

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.

INSPECTION PROCEDURE

NOTICE:

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

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. CHECK TIRES

(a) Check that the tires are not flat, and have no indication of air pressure drop.

OK:

Tires are normal.

HINT

If a tire is damaged, the tire pressure warning valve and transmitter may also have been damaged at the same time.

NG -- REPLACE TIRE AND TIRE PRESSURE WARNING VALVE AND TRANSMITTER See: Instrument Panel, Gauges

and Warning Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair/Removal and Replacement/Removal

OK -- Continue to next step.

2. IDENTIFY TRANSMITTER CORRESPONDING TO DTC

(a) Set the tire pressure to the specified value See: Maintenance/Wheels and Tires/Testing and Inspection/Component Tests and General

Diagnostics.

(b) Turn the engine switch off.

(c) Connect Techstream to the DLC3.

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

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

(f) Display the "ID Tire Inflation Pressure" data for each wheel using the tester.

(g) Rapidly reduce the tire pressure for each wheel by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the DATA LIST.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 379

HINT

*: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform

troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25 See: C Code Charts/C2121.

(h) Check the DATA LIST.

Result:

NOTICE:

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the transmitter IDs and positions of transmitters that are normal.

(i) When the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve

and transmitter that corresponds to the DTC.

(j) When all of the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, identify the malfunctioning tire pressure warning valve

and transmitter using the recorded ID numbers and output DTCs.

(k) Set the tire pressures to the appropriate specified values See: Maintenance/Wheels and Tires/Testing and Inspection/Component

Tests and General Diagnostics.

NEXT -- Continue to next step.

2. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one See: Instrument Panel, Gauges and Warning

Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair/Removal and Replacement/Removal.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 526

HINT

For details on playable files and discs, refer to the Owner's Manual.

OK:

The disc can be played correctly.

NG -- REPLACE RADIO RECEIVER ASSEMBLY See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/Removal

OK -- END

From 08/2009

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): 63-7D-63-7F: Disc cannot be Played

63-7F - Copyright Protection Error

DESCRIPTION

INSPECTION PROCEDURE

HINT

After the inspection is completed, clear the DTCs.

PROCEDURE

1. CHANGE DISC

(a) Insert a disc with a playable file and check if the disc can be played correctly.

HINT

For details on playable files and discs, refer to the Owner's Manual.

OK:

The disc can be played correctly.

NG -- REPLACE RADIO RECEIVER ASSEMBLY See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/Removal

OK -- END

Up to 08/2009

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): 63-7D-63-7F: Disc cannot be Played

63-7F - Copyright Protection Error

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 387

HINT

*: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform

troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25 See: C Code Charts/C2121.

(h) Check the DATA LIST.

Result:

NOTICE:

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the transmitter IDs and positions of transmitters that are normal.

(i) When the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve

and transmitter that corresponds to the DTC.

(j) When all of the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, identify the malfunctioning tire pressure warning valve

and transmitter using the recorded ID numbers and output DTCs.

(k) Set the tire pressures to the appropriate specified values See: Maintenance/Wheels and Tires/Testing and Inspection/Component

Tests and General Diagnostics.

NEXT -- Continue to next step.

2. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one See: Instrument Panel, Gauges and Warning

Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair/Removal and Replacement/Removal.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 174

HINT

*: It may take about 2 or 3 minutes until the values are displayed.

(g) Rapidly reduce the tire pressure for each wheel by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the DATA LIST.

NOTICE:

* It takes about 2 or 3 minutes to display the updated tire pressure data.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.

(i) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID5) has changed, repeat this procedure one by one.

Identify the transmitter that corresponds to the DTC.

Result:

C -- END

B -- CHECK TRANSMITTER ID

A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)

(a) Disconnect the F53 ECU connector.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 259

HINT

* *: It may take about 2 or 3 minutes until the values are displayed.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

Result:

B -- END

A -- Continue to next step.

7. REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER

(a) Replace the tire pressure warning antenna and receiver See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Tire Pressure Monitor Receiver / Transponder/Service and Repair/Removal.

NEXT -- Continue to next step.

8. 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 327

HINT

* *: It may take about 2 or 3 minutes until the values are displayed.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

Result:

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU

Up to 08/2009

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1443/43: Air Outlet Damper Control Servo Motor Circuit

B1443/43 - Air Outlet Damper Control Servo Motor Circuit

DESCRIPTION

The air outlet control servo motor sends pulse signals to indicate the damper position to the A/C amplifier. The A/C amplifier activates the motor

(normal or reverse) based on these signals to move the mode damper to any position, which controls the air outlet switching.

The A/C amplifier communicates with the servo through a communication/driver IC and wiring assembly called the air conditioning harness.

HINT

Confirm that no mechanical problem is present because this DTC can be output when either a damper link or the damper is

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 855

HINT

*: It may take about 2 or 3 minutes until the values are displayed.

(g) Rapidly reduce the tire pressure for each wheel by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the DATA LIST.

NOTICE:

* It takes about 2 or 3 minutes to display the updated tire pressure data.

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.

(i) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID5) has changed, repeat this procedure one by one.

Identify the transmitter that corresponds to the DTC.

Result:

C -- END

B -- CHECK TRANSMITTER ID

A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)

(a) Disconnect the F53 ECU connector.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 618

HINT

This DTC is set at the same time as DTCs C2121/21 to C2124/24 are being set.

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 has been replaced.

PROCEDURE

1. PERFORM SIGNAL CHECK (VEHICLE SPEED SIGNAL AND ENGINE SPEED SIGNAL)

(a) Enter the signal check mode in TEST MODE PROCEDURE See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring

System/Testing and Inspection/Initial Inspection and Diagnostic Overview/Test Mode Procedure.

(b) Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more to erase DTC C2191/91.

(c) Start the engine and allow it to run at 1000 rpm for 3 seconds or more to erase DTC C2194/94.

(d) Check for test mode DTCs.

Result:

HINT

DTCs C2181/81 to C2185/85 (Transmitter ID not Received) are output at this time, but they are not related to this check.

C -- GO TO DTC C2194/94

B -- GO TO DTC C2191/91

A -- 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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 383

HINT

*: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform

troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25 See: C Code Charts/C2121.

(h) Check the DATA LIST.

Result:

NOTICE:

* When the "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and

rotate the tire 90 to 270锟斤拷. Then rapidly release the tire pressure and recheck the data.

* Record the transmitter IDs and positions of transmitters that are normal.

(i) When the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve

and transmitter that corresponds to the DTC.

(j) When all of the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, identify the malfunctioning tire pressure warning valve

and transmitter using the recorded ID numbers and output DTCs.

(k) Set the tire pressures to the appropriate specified values See: Maintenance/Wheels and Tires/Testing and Inspection/Component

Tests and General Diagnostics.

NEXT -- Continue to next step.

2. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one See: Instrument Panel, Gauges and Warning

Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair/Removal and Replacement/Removal.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 378

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.

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. IDENTIFY TRANSMITTER CORRESPONDING TO DTC

(a) Set the tire pressure to the specified value See: Maintenance/Wheels and Tires/Testing and Inspection/Component Tests and General

Diagnostics.

(b) Turn the engine switch off.

(c) Connect Techstream to the DLC3.

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

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

(f) Display the "ID Tire Inflation Pressure" data for each wheel using the tester.

(g) Rapidly reduce the tire pressure for each wheel by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds. If the "ID Tire Inflation

Pressure" data displayed on the tester (ID1 to ID5) does not change, the tire pressure warning valve and transmitter corresponding to

the unchanged "ID Tire Inflation Pressure" data was the cause of the output DTC.

HINT

* Identify the malfunctioning tire pressure warning valve and transmitter by repeatedly decreasing the tire pressure for each

tire.

* Record which "ID Tire Inflation Pressure" data (ID1 to ID5) corresponds to which tire.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 4

HINT

If DTCs are detected frequently, replace the multi-media interface ECU.

OK:

Malfunction disappears.

NG -- REPLACE MULTI-MEDIA INTERFACE ECU See: Accessories and Optional Equipment/Entertainment

Systems/Entertainment System Control Module/Service and Repair/Multi-Media Interface ECU/Removal

OK -- USB DEVICE OR "iPod" WAS DEFECTIVE

From 08/2009

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): CB-52,CB-7E: No Playable iPod File Exists

CB-7E - No Playable USB File Exists

DESCRIPTION

INSPECTION PROCEDURE

HINT

After the inspection is completed, clear the DTCs.

PROCEDURE

1. CHECK USB DEVICE OR "iPod"

(a) Disconnect the USB device or "iPod" from the No. 1 stereo jack adapter assembly.

(b) Check if playable files are present on the USB device or "iPod".

HINT

Refer to System Description for playable files See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Description and Operation/Audio and Visual System (w/o Navigation System).

Result:

B -- REPLACE USB DEVICE OR "iPod"

A -- END

1. REPLACE USB DEVICE OR "iPod"

(a) Turn the engine switch off.

HINT

When one of these DTCs has been stored, it is necessary to turn off the engine switch to make it possible for the vehicle to

recognize a new device when it is connected.

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

(c) Connect a known good USB device or "iPod" to the No. 1 stereo jack adapter assembly.

NEXT -- Continue to next step.