Engine Hood Courtesy Switch Circuit
Circuit diagnosis
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. INSPECT DTC |
- HINT:
- Front controller sends engine hood open/close signal to main body ECU RH through the multiplex communication.
Delete DTC (Click here).
Check the DTC B1214.
- OK:
- No DTC is output.
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| OK | |
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| 2. READ VALUE OF INTELLIGENT TESTER |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Turn the intelligent tester main switch on.
Select the item below in the Data list and read the display on the tester.
Body No. 5 (Front controller): Item
Test Details
Diagnostic Note
Hood Courtesy Switch
Engine hood courtesy switch signal ON/OFF
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- OK:
- The indicator on the tester switches between ON and OFF in accordance with the engine hood courtesy switch status.
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| OK | ||
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| 3. INSPECT ENGINE HOOD COURTESY SWITCH |
Remove the courtesy switch from the hood lock.
Disconnect the 2G R/B connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
Switch Position
Specified Condition
1 - 2
Free (OFF)
10 kΩ or higher
Pushed (ON)
Below 1 Ω
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| OK | |
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| 4. CHECK HARNESS AND CONNECTOR (ENGINE ROOM R/B NO. 2 - ENGINE HOOD COURTESY SWITCH) |
Disconnect the 2G R/B connector and B8 switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
Specified Condition
2G-3 - B8-2
Below 1 Ω
2G-3 or B8-2 - Body ground
10 kΩ or higher
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| OK | |
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| 5. CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
Specified Condition
B8-1 - Body ground
Below 1 Ω
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| OK | ||
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