2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 541

Text in Illustration

(b) Disconnect the engine coolant temperature sensor connector.

(c) Connect terminals THW and E2 of the engine coolant temperature sensor connector on the wire harness side.

(d) Connect the Techstream to the DLC3.

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

(f) Turn the Techstream on.

(g) Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.

(h) Read the value displayed on the Techstream.

Standard:

140锟斤拷C (284锟斤拷F) or more

(i) Reconnect the engine coolant temperature sensor connector.

NG -- CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

OK -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR See: Engine, Cooling and Exhaust/Cooling System/Engine -

Coolant Temperature Sensor/Switch/Engine Temperature Sensor/Service and Repair/Removal

3. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

(a) Disconnect the engine coolant temperature sensor connector.

(b) Disconnect the ECM connector.

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

Standard Resistance (Check for Open):

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1142

Monitor Period of Catalyst-Damaged-Misfire (MIL Blinks): for Mexico Models

TYPICAL MALFUNCTION THRESHOLDS

Monitor Period of Emission-Related-Misfire

Monitor Period of Catalyst-Damage-Misfire (MIL Blinks)

FOR MEXICO MODELS:

Monitor Period of Emission-Related-Misfire: for Mexico Models

Monitor Period of Catalyst-Damaged-Misfire (MIL Blinks): for Mexico Models

MONITOR RESULT

Refer to Checking Monitor Status See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Mode 6 Data.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1730

- Read Pending DTCs.

HINT

If a pending DTC is output, the system is malfunctioning.

- If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC

Check / Clear.

HINT

- If a permanent DTC is output, the system is malfunctioning.

- If no permanent DTC is output, the system is normal.

MONITOR RESULT

Refer to Checking Monitor Status See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Mode 6 Data.

From 08/2009

2GR-FE ENGINE CONTROL: SFI SYSTEM: P0441: Evaporative Emission Control System Incorrect Purge Flow

P0441 - Evaporative Emission Control System Incorrect Purge Flow

DTC SUMMARY

DESCRIPTION

The circuit description can be found in the EVAP (Evaporative Emission) System See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics/EVAP System.

INSPECTION PROCEDURE

Refer to the EVAP System See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/EVAP System.

MONITOR DESCRIPTION

The 2 monitors, key-off and purge flow, are used to detect malfunctions relating to DTC P0441. The key-off monitor is initiated by the ECM internal

timer, known as the soak timer, 5 hours*1 after the engine switch is turned off. The purge flow monitor runs while the engine is running.

1. KEY-OFF MONITOR

5 hours*1 after the engine switch is turned off, the electric leak detection pump creates negative pressure (vacuum) in the EVAP (Evaporative

Emission) system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1266

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

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.

(e) Read the Coolant Temp twice, when the engine is both cold and warmed up.

Standard:

With cold engine

Same as ambient air temperature.

With warm engine

Between 75锟斤拷C and 95锟斤拷C (167锟斤拷F and 203锟斤拷F).

NG -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR See: Engine, Cooling and Exhaust/Cooling System/Engine -

Coolant Temperature Sensor/Switch/Engine Temperature Sensor/Service and Repair/Removal

OK -- Continue to next step.

22. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

HINT

Inspect the mass air flow meter sub-assembly See: Powertrain Management/Computers and Control Systems/Air Flow

Meter/Sensor/Testing and Inspection/On-Vehicle Inspection.

NG -- REPLACE MASS AIR FLOW METER SUB-ASSEMBLY See: Powertrain Management/Computers and Control

Systems/Air Flow Meter/Sensor/Service and Repair/Removal

OK -- Continue to next step.

23. CHECK VALVE TIMING

HINT

Check the valve timing See: P0011.

NG -- ADJUST VALVE TIMING See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/Disassembly

OK -- Continue to next step.

24. CHECK SPARK PLUG

(a) Remove the ignition coil assembly and the spark plug of the misfiring cylinder.

(b) Measure the spark plug electrode gap.

Maximum gap:

1.4 mm (0.0551 in.)

(c) Check the electrode for carbon deposits.

Recommended Spark Plug

NOTICE:

If the electrode gap is larger than the maximum, replace the spark plug. Do not adjust the electrode gap.

(d) Reinstall the ignition coil assembly and the spark plug.

NG -- REPLACE SPARK PLUG See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Removal

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2814

Text in Illustration

(c) Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector.

Then check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

NG -- REPLACE SHIFT SOLENOID VALVE SLT See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve

Body/Service and Repair/Removal and Replacement/U660E Automatic Transaxle/Removal

OK -- Continue to next step.

2. INSPECT TRANSMISSION VALVE BODY ASSEMBLY

(a) Check the transmission valve body assembly See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve

Body/Service and Repair/Removal and Replacement/U660E Automatic Transaxle/Removal.

OK:

There are no foreign objects on each valve and they operate smoothly.

NG -- REPLACE TRANSMISSION VALVE BODY ASSEMBLY See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Valve Body/Service and Repair/Removal and Replacement/U660E Automatic Transaxle/Removal

OK -- REPLACE AUTOMATIC TRANSMISSION ASSEMBLY See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Removal and Replacement/U660E Automatic Transaxle/Transaxle Assembly/Removal

Up to 08/2009

U660F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P2714: Pressure Control Solenoid "D"

Performance (Shift Solenoid Valve SLT)

P2714 - Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

SYSTEM DESCRIPTION

The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position

sensor and the vehicle speed sensor. The TCM adjusts the duty ratio* of the SLT solenoid valve to control hydraulic line pressure coming from the

primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

*: Duty Ratio

The duty ratio is the ratio of the electrical current on time (A) to the total of the electrical current on and off time (A + B).

Duty Ratio (%) = (A / (A + B)) x 100

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2261

NG -- REPLACE TRANSMISSION WIRE See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Wiring

Harness/Service and Repair/U660F Automatic Transaxle/Removal

OK -- Continue to next step.

1. REPLACE ATF TEMPERATURE SENSOR ASSEMBLY

(a) See: Powertrain Management/Transmission Control Systems/Sensors and Switches - Transmission and Drivetrain/Sensors and

Switches - A/T/Transmission Temperature Sensor/Switch/Service and Repair/U660F Automatic Transaxle/Removal.

NEXT -- Continue to next step.

1. CHECK IF DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Start the engine and turn the Techstream on.

(c) Enter the following menus: / ECT / DTC / Clear.

HINT

Write down the currently output DTCs before clearing them.

(d) Perform the monitor drive pattern See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/U660F Automatic Transaxle System.

(e) Enter the following menus: / ECT / DTC.

(f) Read the DTCs using the Techstream.

Result:

B -- END

A -- REPLACE TCM See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and

Drivetrain/Relays and Modules - A/T/Control Module/Service and Repair/U660F Automatic Transaxle/Removal

Up to 08/2009

U660E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0877,P0878: Transmission Fluid

Pressure Sensor / Switch "D" Circuit Low

P0878 - Transmission Fluid Pressure Sensor / Switch "D" Circuit High

DESCRIPTION

ATF pressure switch No. 2 is installed in the shift solenoid valve ATF output passage. This switch is used to identify the malfunctioning part when a

fail-safe operation is performed. If the shift solenoid valve malfunctions when the ATF pressure switch has a malfunction, a fail-safe operation will

be performed. This fail-safe operation is different from the fail-safe operation performed when the solenoid valve malfunctions and the ATF pressure

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2138

Then the TCM compares the actual gear with the shift schedule in the TCM memory to detect mechanical problems of the shift solenoid valves and

valve body.

MONITOR DESCRIPTION

The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution (speed), intermediate

(counter) shaft revolution (speed) and output shaft revolution (speed), the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). When the

gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2280

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

Standard Resistance:

NG -- REPLACE ATF TEMPERATURE SENSOR ASSEMBLY See: Powertrain Management/Transmission Control

Systems/Sensors and Switches - Transmission and Drivetrain/Sensors and Switches - A/T/Transmission Temperature

Sensor/Switch/Service and Repair/U660E Automatic Transaxle/Removal

OK -- REPLACE TRANSMISSION WIRE See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Wiring

Harness/Service and Repair/U660E Automatic Transaxle/Removal

4. CHECK TRANSMISSION WIRE

(a) Remove the oil strainer assembly.

(b) Remove the TCM.

(c) Disconnect the connector from the ATF temperature sensor assembly.

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2294

The TCM illuminates the MIL and stores the DTC when the TCM detects that the ATF pressure switch is OFF with the lock-up solenoid ON or

when the TCM detects that the ATF pressure switch is ON with the lock-up solenoid OFF.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 629

For Mexico Models

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1134

(a) Remove the F/PMP relay from the engine room relay block.

(b) Disconnect the ECM connector.

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

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

Text in Illustration

(d) Reconnect the ECM connector.

(e) Reinstall the F/PMP relay.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (F/PMP RELAY - ECM)

OK -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and

Repair/Removal

From 08/2009

2GR-FE ENGINE CONTROL: SFI SYSTEM: P0230: Fuel Pump Primary Circuit

P0230 - Fuel Pump Primary Circuit

DESCRIPTION

- This DTC is designed to detect a malfunction in the F/PMP relay circuit. When the system is normal, battery voltage is applied to the FPR

terminal of the ECM while the F/PMP relay is off. If battery voltage is not applied to the FPR terminal while the F/PMP relay is off, the ECM

interprets this as a malfunction. The ECM then illuminates the MIL and sets a DTC.

- The F/PMP relay switches the fuel pump speed according to the engine conditions. The fuel pump operates when the ECM receives the STA

signal and NE signal. The F/PMP relay is turned on while the engine is idling or operating at low load. This causes current to flow through the

fuel pump resistor to the fuel pump. The fuel pump then operates at low speed. The F/PMP relay is turned off while the engine is cranking or

operating at high load. The fuel pump then operates at normal speed.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1403

The correct waveform is as shown in the illustration.

MONITOR DESCRIPTION

The knock control sensor, located on the cylinder block, detects spark knock. When spark knock occurs, the piezoelectric element of the sensor

vibrates. When the ECM detects a voltage in this frequency range, it retards the ignition timing to suppress the spark knock.

The ECM also senses background engine noise with the knock control sensor and uses this noise to check for faults in the sensor. If the knock

control sensor signal level is too low for more than 10 seconds, or if the knock control sensor output voltage is outside the normal range, the ECM

interprets this as a fault in the knock control sensor and sets a DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

Knock Sensor Range Check (Low Voltage): P0327 and P0332

Knock Sensor Range Check (High Voltage): P0328 and P0333

COMPONENT OPERATING RANGE

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1351

Standard Resistance (Check for Short):

Text in Illustration

(d) Reconnect the fuel injector assembly connectors.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

OK -- Continue to next step.

29. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50 AND/OR #60 VOLTAGE)

(a) Disconnect the ECM connector.

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

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

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1990

Standard Resistance:

HINT

If the resistance is out of the specified range with the ATF temperature shown in the table below, the driveability of the vehicle

may decrease.

NG -- INSPECT ATF TEMPERATURE SENSOR

OK -- REPLACE TCM See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and

Drivetrain/Relays and Modules - A/T/Control Module/Service and Repair/U660E Automatic Transaxle/Removal

2. INSPECT ATF TEMPERATURE SENSOR

(a) Disconnect the ATF temperature sensor connector from the transmission wire.

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

Standard Resistance:

HINT

If the resistance is out of the specified range with the ATF temperature shown in the table below, the driveability of the vehicle

may decrease.

NG -- REPLACE ATF TEMPERATURE SENSOR ASSEMBLY See: Powertrain Management/Transmission Control

Systems/Sensors and Switches - Transmission and Drivetrain/Sensors and Switches - A/T/Transmission Temperature

Sensor/Switch/Service and Repair/U660E Automatic Transaxle/Removal

OK -- REPLACE TRANSMISSION WIRE See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Wiring

Harness/Service and Repair/U660E Automatic Transaxle/Removal

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 695

- Turn the engine switch on (IG) and turn the Techstream to on.

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

- Turn the engine switch on (IG) and turn the Techstream on [A].

- Start the engine and warm it up until the engine coolant temperature reaches 75锟斤拷C (167锟斤拷F) or higher [B].

- With the transmission in 4th gear or more, drive the vehicle at 40 to 75 mph (60 to 120 km/h) for 10 minutes or more [C].

- Enter the following menus: Powertrain / Engine / Utility / All Readiness.

- Input the DTC: P0136, P0137, P0138, P0156, P0157, or P0158.

- Check the DTC judgment result [D].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT

- If the judgment result shows ABNORMAL, the system has a malfunction.

- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [C] and [D].

- If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

- Read Pending DTCs.

HINT

If a pending DTC is output, the system is malfunctioning.

- If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC

Check / Clear.

HINT

- If a permanent DTC is output, the system is malfunctioning.

- If no permanent DTC is output, the system is normal.

P0139 and P0159:

- Clear the DTCs (even if no DTCs are stored, perform the clear the DTC operation) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 282

P0032 and P0052

TYPICAL MALFUNCTION THRESHOLDS

P0031 and P0051

P0032 and P0052

COMPONENT OPERATING RANGE

CONFIRMATION DRIVING PATTERN

- Connect the Techstream to the DLC3.

- Turn the engine switch on (IG) and turn the Techstream on.

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

- Turn the engine switch on (IG) and turn the Techstream on [A].

- Start the engine and idle it for 5 minutes or more [B].

- With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 3000 rpm for 1 minute [C].

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2035

COMPONENT OPERATING RANGE

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Perform the universal trip to clear permanent DTCs See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/U660E Automatic Transaxle

System/DTC Check / Clear.

HINT

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read

without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be

discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save

diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference

values when deciding whether a part is faulty or not.

- Warm up the engine.

- Turn the engine switch off.

- Connect the Techstream to the DLC3.

- Turn the engine switch on (IG).

- Turn the Techstream on.

- Enter the following menus: Powertrain / ECT / Data List.

- According to the display on the Techstream, read the Data List.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 1729

- Turn the engine switch on (IG) and turn the Techstream on.

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

- Turn the engine switch on (IG) and turn the Techstream on [A].

- Start the engine and wait 15 minutes or more [B].

- Enter the following menus: Powertrain / Engine / Utility / All readiness.

- Input the DTC: P0441.

- Check the DTC judgment result [C].

NOTICE:

- The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a

maximum of approximately 18 minutes.

- Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be

closed, making the fuel tank leak check unavailable.

- Do not run the engine during this operation.

- When the temperature of the fuel is 35锟斤拷C (95锟斤拷F) or more, a large amount of vapor forms and any check results become

inaccurate. When performing the Evaporative System Check, keep the fuel temperature below 35锟斤拷C (95锟斤拷F).

- Turn the engine switch on (IG) and turn the Techstream on.

- Clear the DTCs (even if no DTCs are stored, perform the clear the DTC operation) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

- Turn the engine switch on (IG) and turn the Techstream on.

- Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode [D].

- After the Evaporative System is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All

Readiness.

- Input the DTC: P0441.

- Check the DTC judgment result [E].

HINT

If the judgment result shows ABNORMAL, the system has a malfunction.

- If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 497

- Connect the Techstream to the DLC3.

- Turn the engine switch on (IG) and turn the Techstream on.

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

- Turn the engine switch off.

- Turn the engine switch on (IG) and turn the Techstream on.

- Wait 0.5 seconds or more [A].

- Enter the following menus: Powertrain / Engine / Utility / All Readiness.

- Input the DTC: P0112 or P0113.

- Check the DTC judgment result [B].

HINT

If the judgment result shows ABNORMAL, the system has a malfunction.

- If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

- Read Pending DTCs.

HINT

If a pending DTC is output, the system is malfunctioning.

- If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC

Check / Clear.

HINT

- If a permanent DTC is output, the system is malfunctioning.

- If no permanent DTC is output, the system is normal.

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

The Variable Valve Timing (VVT) system includes the ECM, camshaft timing oil control valve assembly and VVT controller. The ECM sends a

target duty-cycle control signal to the camshaft timing oil control valve assembly. This control signal regulates the oil pressure supplied to the VVT

controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and

engine coolant temperature. The ECM controls the camshaft timing oil control valve assembly, based on the signals transmitted by several sensors.

The VVT controller regulates the exhaust camshaft angle using oil pressure through the camshaft timing oil control valve assembly. As a result, the

relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease

under overall driving conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft position sensors,

and performs feedback control. This is how the target intake valve timing is verified by the ECM.

MONITOR DESCRIPTION

The ECM checks valve timing (VVT learning value) on the exhaust side while the engine is running at a low speed, in order to monitor the gap

between the current and target valve timing on the exhaust side. The VVT learning value is calculated from the positions of the camshaft and

crankshaft. The camshaft will come to the most retarded position when the engine is running at a low speed. If the camshaft position is normal, the

VVT learning value should be within the specified range. If the VVT learning value is not within the specified range, the ECM determines this as a

malfunction.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS