Lexus NX manuals

Lexus NX: How To Proceed With Troubleshooting

Lexus NX Service Manual / Steering / Steering Column / Heated Steering Wheel System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the heated steering wheel system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

INSPECT AUXILIARY BATTERY

Standard Voltage:

11 to 14 V

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

NEXT

3.

PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B
B

GO TO STEP 5

A

4.

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU

Click here

NEXT

5.

REPAIR OR REPLACE
NEXT

6.

CONFIRMATION TEST
NEXT

END

READ NEXT:

 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 pr

 Terminals Of Ecu

TERMINALS OF ECU HINT: Perform the inspection from the harness side with the connectors connected. STEERING HEATER AND VIBRATION ECU (a) Measure the voltage or resistance according to the value(s) in

 Fail-safe Chart

FAIL-SAFE CHART MALFUNCTION DETECTION (a) Operation when malfunction is detected Content Operation Heater failure Overcurrent detection of drive element Heater output off Overheating

SEE MORE:

 If the 12-volt battery is discharged

The following procedures may be used to start the hybrid system if the vehicle's 12-volt battery is discharged. You can also call your Lexus dealer or a qualified repair shop. Restarting the hybrid system If you have a set of jumper (or booster) cables and a second vehicle with a 12- volt

 Components

COMPONENTS ILLUSTRATION *A w/o Power Back Door *B w/ Power Back Door *1 BACK DOOR FINISH COVER LH *2 BACK DOOR FINISH COVER RH *3 BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH) *4 BACK DOOR LOCK COVER *5 BACK DOOR SIDE GARNISH LH *6 BACK DOOR SIDE GARNISH

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