5. Fi INJECTION SYSTEM MOVIE S 125i
5-3
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• 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
Item
Standard
Charging voltage of battery > 12V
Voltage from the ECU to sensor 5±0.1V
Fuel injector resistance (20°C/68°F) 10.6Ω ~ 15.9Ω
Engine temperature sensor resistance
11.15KΩ±7.45% (25°C)
Throttle position sensor voltage
Idle (0°)=0.23±0.05V
Throttle fully (90° ) >3.27V
Fuel pump resistance (20°C/68°F) F: about 7Ω±3Ω E: about 95Ω±5Ω
O2 sensor heater resistance
6.7Ω~9.5Ω ( two white wires)
Air/Fuel<14.7 (Rich) > 0.80V
O2 sensor
Voltage
Air/Fuel>14.7 (Lean) < 0.18V
Item
Standard
Crank position sensor (Pulser) resistance
(20°C/68°F)
96Ω~144Ω
Inductive ignition coil resistance (20°C/68°F) 0.55~0.75Ω (for primary coil)
Roll sensor voltage
Normal: 0.4~1.44V
Over 65° fall down: 3.7~4.4V
Idle speed 1800±100 rpm
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.
＊
To Next Page
Loading...
