DESCRIPTION
This circuit consists of the No. 1 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzer using a sound pattern that changes depending on the distance to the obstacle.
WIRING DIAGRAM
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Intuitive P/A / Active Test.
(e) Check that the buzzer operates by performing the Active Test.
Intuitive P/A
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Buzzer |
No. 1 clearance warning buzzer |
Operate or Stop |
Confirm that the vehicle is stopped and the engine switch is on (IG) |
OK:
The No. 1 clearance warning buzzer sounds.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 1 CLEARANCE WARNING BUZZER) |
(a) Disconnect the D80 No. 1 clearance warning buzzer connector.
(b) Disconnect the D79 clearance warning ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D79-14 (BBZ) - D80-1 (Z+) |
Always |
Below 1 Ω |
D79-13 (ER) - D80-2 (Z-) |
Always |
Below 1 Ω |
D79-14 (BBZ) - Body ground |
Always |
10 kΩ or higher |
D79-13 (ER) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
REPLACE NO. 1 CLEARANCE WARNING BUZZER |
(a) Replace the No. 1 clearance warning buzzer with a new or known good one (See
page ).
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Intuitive P/A / Active Test.
(e) Check that the buzzer operates by performing the Active Test.
Intuitive P/A
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Buzzer |
No. 1 clearance warning buzzer |
Operate or Stop |
Confirm that the vehicle is stopped and the engine switch is on (IG) |
OK:
The No. 1 clearance warning buzzer sounds.
OK | ![]() |
END |
NG | ![]() |
REPLACE CLEARANCE WARNING ECU ASSEMBLY |
Operation Check
OPERATION CHECK
1. CHECK WINDOW LOCK SWITCH
HINT:
Before performing the window lock switch operation check, make sure that the
window lock switch is off (the switch is not pushed in).
(a) Check that the front passenger and rear windows cannot be operat ...
Security Indicator Light Circuit
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security indicator
blinks due to a signal output from the immobiliser system. The security indicator
blinks continuously due to a continuous signal received from the immobilise ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL CHECK VALVE GROMMET
(a) Install a new check valve grommet to the brake booster assembly.
2. INSTALL BRAKE VACUUM CHECK VALVE ASSEMBLY
(a) Install the brake vacuum check valve assembly to the brake booster assembly.
3. IN ...