Engine Hood Courtesy Switch Circuit
The security 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
PROCEDURE
INSPECT HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH)
(a) Remove the hood lock assembly (See page |
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).(b) Disconnect the A7 security courtesy switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
1 - 2 |
Opened |
Below 1 Ω |
Locked |
10 kΩ or higher |
*1 |
Component without harness connected (Hood Lock Assembly (Security Courtesy Switch)) |
*2 |
Opened |
*3 |
Locked |
| NG | .gif) | REPLACE HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH) |
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CHECK HARNESS AND CONNECTOR (SECURITY COURTESY SWITCH - BODY GROUND)
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
 |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SECURITY COURTESY SWITCH)
(a) Disconnect the D50 main body ECU (driver side junction block assembly) connector. |
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
|---|---|---|
D50-16 (HCTY) - A7-1 |
Always |
Below 1 Ω |
D50-16 (HCTY) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
*2 |
Front view of wire harness connector (to Security Courtesy Switch) |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Test yourself
A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.