Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure listed to troubleshoot the Dynamic Torque Control AWD system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

A

4.

CHECK DTC AND FREEZE FRAME DATA*

(a) Check for DTCs.

Click here

Chassis > Four Wheel Drive > Trouble Codes

(b) Check for freeze frame data.

HINT:

Write down or print DTCs and freeze frame data if necessary.

(c) Clear the DTCs and freeze frame data.

Click here

Chassis > Four Wheel Drive > Clear DTCs

(d) Recheck for DTCs.

Click here

Chassis > Four Wheel Drive > Trouble Codes

Result

Proceed to

DTC does not reoccur

A

DTC does reoccur

B

B

GO TO STEP 7

A

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault not listed in problem symptoms table

A

Fault listed in problem symptoms table

B

B

GO TO STEP 7

A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU.

Click here

(b) Data List / Active Test.

Click here

NEXT

7.

REPAIR OR REPLACE

NEXT

8.

CONFIRM TEST

NEXT

END

    Calibration
    CALIBRATION DESCRIPTION (a) When the 4WD ECU assembly is replaced with a known good one from another vehicle or the acceleration sensor (airbag ECU assembly*1 or yaw rate sensor assembly*2) is replace ...

    Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Rear Spoiler: Reassembly
    REASSEMBLY PROCEDURE 1. INSTALL CENTER STOP LIGHT ASSEMBLY Click here 2. INSTALL NO. 2 REAR SPOILER SEAL HINT: When installing the No. 2 rear spoiler seal, heat the rear spoiler using a heat light. Heating Temperature Item Temperature Rear Spoiler 20 to 30°C (68 to 86°F) CAUTION: ...

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Front Power Seat Control System (w/ Memory): Wireless Transmitter Memory Function does not Operate
    DESCRIPTION With the engine switch on (IG) and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch LH (M1, M2 or M3 switch) will register the transmitter recognition code into the seat memory switch LH t ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2022 Copyright www.lexusrx.net
    0.0147