Service Information - KYMCO Downtown 125i 2009 Service Manual

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14.
DOWNTOWN 125 i FUEL SYSTEM (Auto Control Fuel Injection System)

SERVICE INFORMATION

GENERAL INSTRUCTIONS
＊
Gasoline is very dangerous. When working with gasoline, keep sparks and flames away
from the working area.
Gasoline is extremely flammable and is explosive under certain conditions. Be sure to
work in a well-ventilated area.
• Disconnect the cables of the battery when the engine is running, which could lead to ECU
damage.
• Connect the harness positive (+) cable to the battery negative (-) terminal or connect the harness
negative (-) to the battery positive (+) terminal, which could lead to ECU damage.
• Always keep fuel over 750 cc in fuel tank.
SPECIFICATIONS
Charging voltage of battery
Voltage from the ECU to sensor
Fuel injector resistance (20°C/68°F)
Water temperature sensor resistance
Throttle position sensor voltage
Fuel pump resistance (20°C/68°F)
O2 sensor heater resistance
O2 sensor
Voltage
Crank position sensor (Pulser) resistance
(20°C/68°F)
Inductive ignition coil resistance (20°C/68°F) 0.55~0.75Ω
Roll sensor voltage (diagnostics)
Idle speed
14-3
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Item
Air/Fuel<14.7 (Rich) >0.7V
Air/Fuel>14.7 (Lean) <0.18V
Item
Standard
13.5~14.5V
5±0.1V
10.6~15.9Ω
2.075±10 KΩ (20~30°C)
Idle (0°)=0.23±0.05V
Throttle fully (90° /3.27V over)
F: about 1100Ω E: about 100Ω
6.7~9.5Ω
Standard
95~144Ω
Normal: 0.3~1.4V
Over 65° fall down: 3.5~4.7V
1850±100 rpm