Engine Hood Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE

1. READ DATA LIST BY INTELLIGENT TESTER

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch ON.

3. Turn the intelligent tester main switch on.

4. Select the item below in the DATA LIST and read the display on the tester.

   BODY (Multiplex network body ECU): 

   Item	Test Details	Diagnostic Note
   Hood Courtesy SW	Engine hood courtesy switch signal ON/OFF	-

   OK:

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

NG	Go to step 2

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT ENGINE HOOD COURTESY SWITCH

1. Remove the courtesy switch from the hood lock.

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

   Resistance:

   Tester Connection	Switch Position	Specified Condition
   1 - 2	Pushed (OFF)	10 kΩ higher
   	Free (ON)	Below 1 Ω

NG	REPLACE ENGINE HOOD COURTESY SWITCH

OK

3. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - ENGINE HOOD COURTESY SWITCH)

1. Disconnect the B4 ECU and E3 switch connectors.

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

   Resistance:

   Symbol (Tester Connection)	Specified Condition
   HCTY (B4-10) - (E3-2)	Below 1 Ω
   (B4-10) or (E3-2) - Body ground	10 kΩ higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

1. Disconnect the E3 switch connector.

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

   Resistance:

   Tester Connection	Specified Condition
   E3-1 - Body ground	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE INSTRUMENT PANEL J/B ASSEMBLY