DESCRIPTION
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
1. |
INSPECT HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH) |
(a) Remove the hood lock assembly (See page
|
|
(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 | ![]() |
REPLACE HOOD LOCK ASSEMBLY (SECURITY COURTESY SWITCH) |
|
2. |
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 |
|
3. |
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SECURITY COURTESY SWITCH) |
(a) Disconnect the D50 main body ECU (driver side junction block assembly) connector. |
|
(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 |
Rear Left Center Sensor Malfunction (C1AE7)
DESCRIPTION
The No. 1 ultrasonic sensor (rear left center sensor) is installed on the rear
bumper. The ECU detects obstacles based on signals received from the No. 1 ultrasonic
sensor (rear left center sensor). If the No. 1 ultrasonic sensor (rear left ce ...
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment
or repair. Contact your Toyota dealer as soon as possible.
- Visible symptoms
• Fluid leaks under the vehicle
(Water dripping from the air conditioning after use i ...
Precaution
PRECAUTION
1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
After the ignition switch is turned off, the radio and display receiver
assembly records various types of memory and settings. As a result, after
turning ...