THEFT DETERRENT SYSTEM > Engine Hood Courtesy Switch Circuit

for Preparation Click here


DESCRIPTION

The engine hood courtesy switch is installed together with the hood lock. This switch turns off when the engine hood is opened and turns on when the engine hood is closed.

WIRING DIAGRAM


B213585E02


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. According to the display on the intelligent tester, read the Data List.

    Main Body 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Hood Courtesy Switch
    		Engine hood courtesy switch signal/ON or OFF
    		ON: Engine hood is OPEN
    OFF: Engine hood is CLOSED
    		-

    OK:
    The indicator on the intelligent tester switches between ON and OFF in accordance with the engine hood courtesy switch status.



NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

2.INSPECT ENGINE HOOD COURTESY SWITCH
B216876E01

  1. Disconnect the A40 or A41 courtesy switch connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		LOCK position
    		Below 1 Ω
    UNLOCK position
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Engine Hood Lock Assembly
    *2
    		Component without harness connected
    (Engine Hood Courtesy Switch)



NG
REPLACE HOOD LOCK ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND)


    B213586E01

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A40-2 - Body ground*1
    		Always
    		Below 1 Ω
    A41-2 - Body ground*2
    		Always
    		Below 1 Ω

    1. *1: for 1KR-FE and 1NR-FE
    2. *2: for 1ND-TV

Text in Illustration 
*1
for 1KR-FE and 1NR-FE
*2
for 1ND-TV
*3
Front view of wire harness connector
(to Engine Hood Courtesy Switch)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (JUNCTION BLOCK - ENGINE HOOD COURTESY SWITCH)


    B213587E01

  1. Disconnect the 3B instrument panel junction block connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3B-39 (HCTY) - A40-1*1
    		Always
    		Below 1 Ω
    3B-39 (HCTY) - A41-1*2
    		Always
    		Below 1 Ω
    3B-39 (HCTY) - Body ground
    		Always
    		10 kΩ or higher

    1. *1: for 1KR-FE and 1NR-FE
    2. *2: for 1ND-TV

Text in Illustration 
*1
for 1KR-FE and 1NR-FE
*2
for 1ND-TV
*3
Front view of wire harness connector
(to Engine Hood Courtesy Switch)
*4
Front view of wire harness connector
(to Instrument Panel Junction Block)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.REPLACE MAIN BODY ECU

  1. Temporarily replace the main body ECU with a new or normally functioning one (Click here).


NEXT


6.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. According to the display on the intelligent tester, read the Data List.

    Main Body 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Hood Courtesy Switch
    		Engine hood courtesy switch signal/ON or OFF
    		ON: Engine hood is OPEN
    OFF: Engine hood is CLOSED
    		-

    OK:
    The indicator on the intelligent tester switches between ON and OFF in accordance with the engine hood courtesy switch status.



NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK
OK

END (MAIN BODY ECU IS DEFECTIVE)