NIDEC MOBILITY G8D-360M TPMS Receiver User Manual
OMRON Automotive Electronics Co. Ltd. TPMS Receiver
User Manual
FCC ID:OUCG8D-360M
G8D-360M
Receiver, Tire Pressure Monitoring System
FCC ID:OUCG8D-360M
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Table of contents
1. Constitution of the Tire Pressure Monitoring System for vehicle....................... 2
2. User’s manual (provisionally) .......................................................................... 3
3. Block diagram ................................................................................................ 4
4. Specification ................................................................................................... 5
5. Features .......................................................................................................... 6
6. PCB
6.1
Circuit diagram ........................................................................................... 7
6.2
Parts layout (front)...................................................................................... 8
6.3
Pattern layout (front).................................................................................... 9
6.4
Pattern layout (back).................................................................................... 10
6.5
Parts list ...................................................................................................... 11
7. Connector ..................................................…................................................. 15
8. Photographs .................................................................................................... 16
FCC ID:OUCG8D-360M
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1. Constitution of the Tire Pressure Monitoring System
for vehicle
Tire Pressure Monitoring System is the system that receives the information, from transmitters installed at
each tire, about the inflation pressure or temperature of tires detected by the sensor, so that the system can
detect the abnormality of tires like fallen inflation pressure. This system consists of transmitter, receiving
antenna, and receiver. The transmitter sends information of tire, read by the sensor, in the form of radio wave
at constant intervals. The receiver is fixed inside the vehicle. If IG is OFF, it works intermittently to prevent
the battery exhaustion. When the receiver detects the synchronous code and IG is ON, it runs continuously
to receive the signals completely. If the received code is normal, the system will not inform the user. As
shown below, in the case that the transmitter sends information that the tire is in abnormal condition, and
that the receiver system has a trouble, the system will output to Combi meter ECU and inform the user with
lighting up Warning LED.
TPMS Warning LED is lit by the following situations.
Bulb disconnection detection output（The warning light is On for 3 sec. when IG=OFF→ON）
Tire air pressure warning output (Warning light is ON)
System warning output (Warning light is blinking)
Pressure sensor 1
CPU
Receiving circuit
CPU
Ｃｏｍｂｉ ｍｅｔｅｒ
ＥＣＵ
EEPROM
Transmission
Transmitter 1
Receiver
Antenna
Transmitter SP
Transmitter 2
Transmitter 3
Transmitter 4
Figure 2-1 System Architecture
Tire
FCC ID:OUCG8D-360M
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2. User’s manual (provisionally)
Tire inflation pressure warning light
This light illuminates if the inflation pressure of any tire (except for compact spare tire) drops while the ignition
key is in the “ON” position. It normally illuminates when the ignition key is turned to the “ON” position and
goes off a few seconds later.
If the warning light illuminates while driving
Avoiding hard braking, hard steering, and high speeds, drive to the nearest gas station or authorize car dealer
and adjust the tire inflation pressures.(except for compact spare tire)
If the warning light blinking wfile driving
It is thought abnormality of the device, go to the check to the nearest car dealer as soon as possible.
Whenever the tires and wheels are replaced with new ones
Tire inflation pressure sensors must be fitted on the new wheels and their ID codes must be programmed into
the system. Have tire and wheel replacement performed by an authorized car dealer to avoid the risk of
damaging the tire inflation pressure sensors.
ＣＡＵＴＩＯＮ
・ If the tire inflation pressure warning-light does not illuminate when the ignition key is turned to the “ON”
position the system may be faulty.
・ If the tire inflation pressure warning light illuminates while you are driving, avoid hard braking, hard
steering, and high speeds. Otherwise, you could make the vehicle unstable and have a serious accident.
・ The tire inflation pressure warning light may not illuminate immediately in the event of a tire blowout or
rapid leak..
Warning
light
ＭＥＴＥＲ ＰＡＮＥＬ
FCC ID:OUCG8D-360M
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3. Block diagram
This is the block diagram concerning to the receiver.
Figure 3.1 block diagram of the receiver
16BIT
CPU
RECEIVING
MODULE
EEPROM
POWER
SOURCE(5V)
data
OUTPUT
CIRCUIT
input
output
Signal of vehicle status
12V (car battery)
COMBI
METER ECU
FCC ID:OUCG8D-360M
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4. Specification
4.1 CPU
Type M30102(16bit)
Manufacturer: MITSUBISHI
ROM 24K bytes
RAM 1Kytes
Clock frequency 8.00MHz
Clock frequency generation Crystal oscillator
Package 48pin QFP
4.2 RF block
Local clock frequency 423.22MHz
Frequency generation Crystal resonator
Modulation Single Superheterodyne
Bandwidth ±200KHz
Sensitivity 30dBuV
4.3 Others
Dimension 83mm×64mm×31mm
Weight 120g
Battery Car Battery (DC 12V)
Operation Voltage DC 12V, 20mA
Operation temperature -30℃ ~ +80℃
FCC ID:OUCG8D-360M
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5. Features
Battery saving
The receiver works intermittently to reduce the battery consumption. The microcomupter embedded on
the receiver controlls the power supply for the RF circuit. In case of the microcomputer detects the wake-up
signal during the power supplied, the microcomputer continue supplying the power until the data frame will
be received.