Lexus NX manuals

Lexus NX: On-vehicle Inspection

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Stop Light Switch / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Disconnect the stop light switch assembly connector.

*a

Front view of wire harness connector

(to Stop Light Switch Assembly)

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A1-1 (B) - A1-3 (GND)

Always

11 to 14 V

A1-5 (B) - A1-3 (GND)

Always

11 to 14 V

Standard Resistance:

Tester Connection

Condition

Specified Condition

A1-3 (GND) - Body ground

Always

Below 1 Ω

If the result is not as specified, repair or replace the wire harness or connector.

(c) Reconnect the stop light switch assembly connector.

(d) w/o Dynamic Radar Cruise Control System:

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A1-2 (L) - A1-3 (GND)

Brake pedal not depressed

0 to 1.5 V

A1-2 (L) - A1-3 (GND)

Brake pedal depressed

7.5 to 14 V

A1-4 (L) - A1-3 (GND)

Brake pedal not depressed

7.5 to 14 V

A1-4 (L) - A1-3 (GND)

Brake pedal depressed

0 to 1.5 V

If the result is not as specified, replace the stop light switch assembly.

*a

Component with harness connected

(Stop Light Switch Assembly)

(e) w/ Dynamic Radar Cruise Control System:

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A1-2 (L) - A1-3 (GND)

Power switch off, brake pedal not depressed

0 to 1.5 V

A1-2 (L) - A1-3 (GND)

Power switch off, brake pedal depressed

7.5 to 14 V

A1-4 (L) - A1-3 (GND)

Power switch on (IG), brake pedal not depressed

7.5 to 14 V

A1-4 (L) - A1-3 (GND)

Power switch on (IG), brake pedal depressed

0 to 1.5 V

If the result is not as specified, replace the stop light switch assembly.

*a

Component with harness connected

(Stop Light Switch Assembly)

READ NEXT:

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 Installation

INSTALLATION PROCEDURE 1. INSTALL STOP LIGHT SWITCH ASSEMBLY (a) Turn the stop light switch assembly in the clockwise direction until it reaches the standard shaft protrusion amount and temporarily

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