2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) C CODE Page 805

NOTICE:

- Before performing troubleshooting, inspect the connectors of related circuits.

- If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first See:

C1782.

- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation See: Accessories

and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled

Systems/How To Proceed With Troubleshooting; 2) DTC inspection See: Steering and Suspension/Suspension/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes; and 3) Techstream inspection (Data List or Active Test) See:

Steering and Suspension/Suspension/Testing and Inspection/Scan Tool Testing and Procedures. If no malfunctions are found

in other areas, replace the suspension control ECU.

- If the suspension control ECU is replaced, the vehicle height offset calibration and registration of vehicle identification

information must be performed See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic

)/Testing and Inspection/Calibration and See: Steering and Suspension/Suspension/Suspension Control ( Automatic -

Electronic )/Testing and Inspection/Registration)

PROCEDURE

1. CHECK DTC (C1781)

(a) Check for DTC C1781 See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble

Codes

Result:

B -- REPLACE SUSPENSION CONTROL ECU

A -- Continue to next step.

2. REGISTRATION OF VEHICLE IDENTIFICATION INFORMATION

(a) Perform registration of vehicle identification information See: Steering and Suspension/Suspension/Suspension Control ( Automatic -

Electronic )/Testing and Inspection/Registration

NEXT -- Continue to next step.

3. CHECK DTC (C1789)

(a) Check for DTC C1789 See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble

Codes

Result:

B -- CHECK CAN COMMUNICATION SYSTEM

A -- END

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check the CAN communication system for any malfunctions See: Powertrain Management/Computers and Control

Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/Diagnosis

System.

Result:

B -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information

Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With