MR2 Spyder L4-1.8L (1ZZ-FE) (2001)
Audible Warning Device: Pinout Values and Diagnostic Parameters
Light Reminder and Key Reminder Buzzer
LIGHT REMINDER AND KEY REMINDER BUZZER
SYSTEM OUTLINE
1. LIGHT REMINDER SYSTEM
When the ignition SW is OFF and the driver's side door or passenger's side door is opened (Door courtesy SW ON) and the light control SW is at
TAIL or HEAD position, the light reminder buzzer comes ON.
2. KEY REMINDER BUZZER SYSTEM
If the driver door is opened with the ignition SW set at the ACC or OFF position and the ignition key remained inserted into the key cylinder (The
unlock warning SW is on), the signal from the unlock warning SW is input to TERMINAL KSW of the body ECU and the signal from the door
courtesy SW LH is input to TERMINAL DCTY of body ECU. As a result, through communication control of the body ECU etc. the buzzer in the
combination Meter goes on to warn the driver that the ignition key is still inserted.
Seat Belt Warning and Electric Tension Reducer
SEAT BELT WARNING AND ELECTRIC TENSION REDUCER
SYSTEM OUTLINE
Current is always applied from the ECU - B fuse to comb. meter TERMINAL (B) 1.
SEAT BELT WARNING SYSTEM
When the ignition SW is turned on, the current flows from the GAUGE Fuse to comb. Meter TERMINAL (B) 10. At this time, to determine whether the
driver is wearing the seat belt or not, a signal is input from the buckle SW (Driver side) to comb. Meter TERMINAL (A) 12. If the driver is not wearing
the seat belt, the seat belt warning light in the comb. Meter flashes and buzzer to inform the driver. Also, a sensor installed in the front passenger seat
determines whether there is a passenger seated, and whether the seat belt is worn or not. If the seat belt is not worn, the signal from the buckle SW
(Passenger side) and the sensor is input to the comb. Meter TERMINAL (B) 15, and the current flows from comb. Meter TERMINAL (A) 20 to
passenger seat belt warning light TERMINAL 9 to TERMINAL 4 to GROUND, and the light flashes to inform.