Lexus NX: Diagnosis System

DIAGNOSIS SYSTEM

CHECK DLC3

(a) Check the DLC3.

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FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR

(a) Initial check

(1) Turn the power switch on (IG).

(2) The passenger airbag ON/OFF indicator comes on for approximately 4 seconds, and then goes off for approximately 2 seconds.

(3) Approximately 6 seconds after the power switch is turned on (IG), the passenger airbag ON/OFF indicator will be on or off according to the chart below.

Indicator Operation

Front Passenger Seat Condition

Passenger Airbag ON/OFF Indicator

SRS Warning Light

ON Indicator

OFF Indicator

Vacant

Off

On

Off

Adult is seated.

On

Off

Off

Child is seated.

Off

On

Off

Child restraint system is installed.

Occupant classification system failure

Off

On

On

HINT:

  • The passenger airbag ON/OFF indicator illuminates based on the timing chart below in order to check the indicator light circuit.
  • When the occupant classification system has trouble, both the SRS warning light and passenger airbag ON/OFF indicator ("OFF") come on. In this case, check the DTCs in the airbag system first.

CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the power switch on (IG).

(b) Check that the passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, and then goes off for approximately 2 seconds.

HINT:

Refer to the indicator operation table in the preceding step regarding the passenger airbag ON/OFF indicator when the power switch is turned on (IG) and approximately 6 seconds elapse.

READ NEXT:

 Dtc Check / Clear

DTC CHECK / CLEAR DTC CHECK (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El

 Fail-safe Chart

FAIL-SAFE CHART FAIL SAFE FUNCTION (a) The following chart shows the status of the controls when the system is normal and malfunctioning. The passenger airbag ON/OFF indicator ("ON" and "OFF") come

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th

SEE MORE:

 System Description

SYSTEM DESCRIPTION SLIDING ROOF SYSTEM DESCRIPTION (a) The sliding roof system controls the sliding roof operation using the sliding roof drive gear sub-assembly (sliding roof ECU). Operating the map light assembly sliding (slide roof switch) results in electrical power being transmitted to the slid

 Parts Location

PARTS LOCATION ILLUSTRATION *1 NO. 1 ENGINE ROOM RELAY BLOCK - IG2-MAIN RELAY - IG2-MAIN FUSE - STRG LOCK FUSE - - ILLUSTRATION *1 POWER SWITCH *2 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - IG2 NO. 3 FUSE *3 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *4 DLC3 *5

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