Lexus NX: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the sliding roof system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points for problem analysis:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Driving conditions, weather conditions

    How did it happen?

    Problem symptoms

NEXT

3.

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage.

Standard voltage:

11 to 14 V (power switch off)

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

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

4.

INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B

B

GO TO CAN COMMUNICATION SYSTEM

A

5.

INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for LIN communication system DTCs.

Click here

Result

Proceed to

LIN DTCs are not output

A

LIN DTCs are output

B

B

GO TO LIN COMMUNICATION SYSTEM

A

6.

CHECK FOR DTC*

(a) Check for DTCs and make a note of any codes that are output.

Click here

Body Electrical > Sliding Roof > Trouble Codes

(b) Clear the DTCs.

Body Electrical > Sliding Roof > Clear DTCs

(c) Recheck for DTCs.

Body Electrical > Sliding Roof > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

7.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B

B

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

A

8.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

(d) Inspection

NEXT

9.

ADJUST, REPAIR OR REPLACE

NEXT

10.

INITIALIZE SLIDING ROOF SYSTEM

(a) Initialize the sliding roof drive gear sub-assembly (sliding roof ECU).

Click here

NEXT

11.

CONFIRMATION TEST

NEXT

END

READ NEXT:

 Operation Check

OPERATION CHECK CHECK SLIDING ROOF NOTICE: If the negative battery terminal is disconnected under the following conditions, initialization of the sliding roof drive gear sub-assembly may not be com

 Customize Parameters

CUSTOMIZE PARAMETERS CUSTOMIZE SLIDING ROOF SYSTEM HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, first make sure that the function can be c

 Initialization

INITIALIZATION INITIALIZE SLIDING ROOF SYSTEM NOTICE: When the roof glass is adjusted or removed/installed, or the sliding roof drive gear sub-assembly is replaced, the glass position cannot be det

SEE MORE:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC AND FREEZE FRAME DATA (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG) and the Techstream on. (d) Enter the following menus: Chassis / Electric Parking Brake / Trouble Codes. (e) Check for DTC. Chassis > Electric

 Data Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound data signal or image data signal from a USB device to the radio receiver assembly via this circuit. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) (

© 2016-2023 Copyright www.lexunx.com