Lexus ES manuals

Lexus ES: On-vehicle Inspection

Lexus ES (XZ10) Service Manual / Vehicle Interior / Lighting (ext) / Stop Light Switch / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Disconnect the A80 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
*1: for HV Model

*2: for Gasoline Model

A80-7 (B) - A80-2 (GND)

Always

11 to 14 V

A80-6 (B) - A80-2 (GND)

Power switch on (IG)*1

11 to 14 V

Engine switch on (IG)*2

Standard Resistance:

Tester Connection

Condition

Specified Condition

A80-2 (GND) - Body ground

Always

Below 1 Ω

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

(c) Connect A80 the stop light switch assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition
*1: for HV Model

*2: for Gasoline Model

A80- 1 (OUT) - A80-2 (GND)

Power switch off, brake pedal not depressed*1

1.5 V or less

Engine switch off, brake pedal not depressed*2

A80- 1 (OUT) - A80- 2 (GND)

Power switch off, brake pedal depressed*1

11 to 14 V

Engine switch off, brake pedal depressed*2

A80-3 (L) - A80-2 (GND)

Power switch off, brake pedal not depressed*1

1.5 V or less

Engine switch off, brake pedal not depressed*2

A80-3 (L) - A80-2 (GND)

Power switch off, brake pedal depressed*1

11 to 14 V

Engine switch off, brake pedal depressed*2

A80-4 (ACC) - A80-2 (GND)

Always

11 to 14 V

A80-5 (L) - A80-2 (GND)

Power switch on (IG), brake pedal not depressed*1

7.5 to 14 V

Engine switch on (IG), brake pedal not depressed*2

A80-5 (L) - A80-2 (GND)

Power switch on (IG), brake pedal depressed*1

0 to 1.5 V

Engine switch on (IG), brake pedal depressed*2

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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