Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the occupant classification system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Confirm problem symptoms.
Click here .gif)
|
| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the power switch off.
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.
|
| 4. | PASSENGER AIRBAG ON/OFF INDICATOR CHECK |
(a) Proceed to Diagnosis System.
Click here
|
| 5. | CHECK DTC (Present and History DTCs)* |
(a) Proceed to DTC Check / Clear.
Click here
| DTC is not output | .gif) | GO TO PROBLEM SYMPTOMS TABLE |
|
| 6. | DIAGNOSTIC TROUBLE CODE CHART |
(a) Proceed to Diagnostic Trouble Code Chart.
Click here
|
| 7. | CIRCUIT INSPECTION* |
|
| 8. | REPAIR |
|
| 9. | CLEAR DTCS (Present and Past DTCs)* |
(a) Proceed to DTC Check / Clear.
Click here
|
| 10. | CHECK DTC* |
(a) Proceed to DTC Check / Clear.
Click here
| DTC is output | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 11. | CONFIRM SIMULATION |
(a) Check the passenger airbag ON/OFF indicator condition.
| Result | Proceed to |
|---|---|
| Passenger airbag ON/OFF indicator operates normally | A |
| Passenger airbag ON/OFF indicator ("OFF") and SRS warning light come on | B |
| B | | GO TO AIRBAG SYSTEM |
|
| 12. | CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Initialization
INITIALIZATION NOTICE: Make sure that the front passenger seat is not occupied before performing the operation. HINT: Perform zero point calibration and sensitivity check if any of the following cond
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
Terminals Of Ecu
TERMINALS OF ECU OCCUPANT DETECTION ECU HINT: Since the occupant detection ECU uses waterproof connectors, the voltage and waveform cannot be inspected directly. Standard voltage and waveforms are in
SEE MORE:
Operation Check
OPERATION CHECK CHECK POWER SEAT FUNCTION (a) Check the basic functions. *a Slide Function *b Reclining Function *c Rear Lifter Function *d Front Vertical Function *e Lumbar Support Adjustment Function (1) Operate the power seat switches and check that the following
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) When troubleshooting a vehicle with the diagnostic system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the multiplex tilt and telescopic ECU. The multiplex tilt and tele
