Toyota 4Runner manuals

Toyota 4Runner: Engine Hood Courtesy Switch Circuit

DESCRIPTION

  • The security courtesy switch is built into the hood lock. This switch turns on when the engine hood is opened and turns off when the engine hood is closed.

WIRING DIAGRAM


PROCEDURE

1.

READ VALUE USING TECHSTREAM (SECURITY COURTESY SWITCH)

(a) Using the Techstream, read the Data List (See page ).


Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Hood Courtesy SW

Security courtesy switch /

ON or OFF

ON: Engine hood open

OFF: Engine hood closed

-

OK:

ON (engine hood open) and OFF (engine hood closed) appear on screen according to condition of engine hood.


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

INSPECT SECURITY COURTESY SWITCH

(a) Disconnect the A19 switch connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (GRD) - 2 (CTYH)

Unlock position

Below 1 Ω

1 (GRD) - 2 (CTYH)

Lock position

10 kΩ or higher


NG

REPLACE SECURITY COURTESY SWITCH


OK

3.

CHECK HARNESS AND CONNECTOR (SECURITY COURTESY SWITCH - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the A19 switch connector.

(b) Remove the main body ECU (See page ).


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A19-2 (CTYH) - A-20 (HCTY)

Always

Below 1 Ω

A19-1 (GRD) - Body ground

Always

Below 1 Ω

A19-2 (CTYH) or A-20 (HCTY) - Body ground

Always

10 kΩ or higher


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Data List / Active Test
DATA LIST / ACTIVE TEST 1. 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 p ...

Horn Circuit
DESCRIPTION When the theft deterrent system is in the alarm sounding state, the main body ECU outputs a signal repeatedly at 0.4 second intervals, causing the horn(s) to sound. WIRING DIAGRAM ...

Other materials about Toyota 4Runner:

Display does not Dim when Light Control Switch is Turned ON
PROCEDURE 1. CHECK IMAGE QUALITY SETTING (a) Turn the light control switch to the tail or head position. (b) Check that the daytime screen setting on the display adjustment screen is set to on. Result ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) (a) Disconnect the S10 sliding roof drive gear sub-assembly connector. (b) Measure the resistance and voltage according to the value(s) in the table below. HINT: Measure ...

© 2016-2020 | www.to4runner.net

0.0066