Power Back Door Warning Buzzer Circuit

Power Back Door Warning Buzzer Circuit

DESCRIPTION
The power back door ECU applies current from terminal BZR+ to terminal BZR- to activate the power back door warning buzzer.
The power back door system uses a warning buzzer built into the back door which has 3 patterns of sounding according to the situation:
1. When all the following conditions are met, the warning buzzer sounds at a cycle of 0.3 seconds:
- The ignition switch is turned ON.
- The shift lever is moved into any position except P.
- The back door is open or the power back door is activated to open.
The warning buzzer continues to sound until the back door is fully closed or the shift lever is moved into the P position.

2. While the power back door is operating, the warning buzzer sounds at a cycle of 0.7 seconds. This stops sounding when the power back door stops. The warning buzzer is set to OFF at factory (default setting) and can be customized when required.
3. When the power back door is activated to open, the warning buzzer that notifies the start of opening sounds at 2 cycles of 0.5 seconds. At the start of opening of the power back door, the wireless buzzer (built into the engine room) also sounds.
4. When the direction that the power back door is moving is reversed by switch operation (power back door opener/closer switch, transmitter switch, power back door closer switch or back door opener switch (outside handle switch)) or the activation of the jam protection function during power back door operation, the warning buzzer sounds once for 0.3 seconds.
The power back door ECU directly sends a signal to the warning buzzer.

HINT:
- Only item 2 can be customized .
- If all items occur at the same time, item 1 is prior to the others.

NOTE: The power back door ECU records the back door positions in the memory. In the case where any of the batteries, fuses, power back door ECU and power back door drive unit are removed and reinstalled, the power back door ECU loses the memory of the door positions. In such cases, resetting the power back door system is necessary. Refer to the resetting operation specified.

Wiring Diagram:

Step 1:

Step 2:

Step 2(Continued)4:

Step 4(Continued):

INSPECTION PROCEDURE