THEFT DETERRENT SYSTEM Engine Hood Courtesy Switch Circuit

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

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the ignition switch to ON

   3. Turn the intelligent tester on.

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

   5. 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

   INSPECT ENGINE HOOD COURTESY SWITCH Click here

   OK

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

2. INSPECT ENGINE HOOD COURTESY SWITCH

   
   
   1. 

      Text in Illustration

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

      Disconnect the A40 or A41 courtesy switch connector.

   2. 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

   
   

   NG

   REPLACE HOOD LOCK ASSEMBLY Click here

   OK

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

   
   
   1. 

      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)

      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: for 1KR-FE and 1NR-FE

      • *2: for 1ND-TV

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   
   1. 

      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)

      Disconnect the 3B instrument panel junction block connector.

   2. 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: for 1KR-FE and 1NR-FE

      • *2: for 1ND-TV

   
   

   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.

   2. Turn the ignition switch to ON

   3. Turn the intelligent tester on.

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

   5. 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)