TGB ATV

EFI - Elektronisk bränsleinsprutning

Komplement till ordinarie verkstadshandbok för förgasarmotor

PARTS LOCATION

1 ECU

10 Ignition Coil

2 Tilt Switch

11 Throttle Position Sensor

3 Injector

12 Idle Speed Controller

4 Speed Sensor

13 TEMP & Absolute Pressure Sensor

5 Engine Coolant Temperature

14 Throttle Body

6 Crank Position Sensor

15 Speed Meter

7 Pressure Regulator

16 Low Voltage Controller

8 Fuel Pump (Reservoir)

17 Gear Controller

9 Fuel Filter x 2

18 Fuse Box ASS’Y

FUEL INJECTION SYSTEM ECU

REMOVAL / INSTALLATION • Remove the seat set. • Disconnect the ECU 48P connectors.

POWER INPUT LINE

• Connecting the diagnostic tool to the socket of vehicle. • Key-on but do not ignition, verify the ECU connected to diagnostic tool. • Verify the suitable vehicle type and software version of ECU. • Check is any data on the history page. • If yes, please erase history data. • Ignition and check each value reading in the ECU. • DTC can be viewed or erased, restart the engine, the DTC will not display.

1

FUEL INJECTION SYSTEM ILT SWITCH INSPECTION • Remove the seat set. • Turn the ignition switch ON and measure the voltage between the following terminals of the TILT SW sensor connector with the connector connected. • Measure the voltage when leaning the sensor. OUTPUT - GND 0∘: 0.4~1.4 V 65∘: 3.7~4.4 V • Turn the ignition switch OFF.

2

FUEL INJECTION SYSTEM INJECTOR • Turn the ignition switch OFF. • Disconnect the injector 2P connector. • Check for loose or poor contact on the injector 2P connector.

• Turn the ignition switch OFF. • Disconnect the injector 2P connector and measure the resistance of the injector. Connection: Red (+) － Blue/Green(-) Standard:12.0±0.6 Ω

3

FUEL INJECTION SYSTEM ECT SENSOR INSPECTION • Turn the ignition switch OFF. • Disconnect ECT sensor 2P connector. • Check for loose or poor contact on the ECT sensor connector.

• Turn the ignition switch OFF. • Disconnect the ECT sensor connector. • Measure the resistance at ECT sensor terminals. Connection:

Standard: TEMPERATURE(℃)

RESISTANCE VALUES(OHM)

20

3500

±250

60

704

±45

90

260

±20

4

TOL. (OHM)

FUEL INJECTION SYSTEM CRANK POSITION SENSOR (CPS) • Turn the ignition switch OFF. • Disconnect the crank position sensor 2P connector. • Check for loose or poor contact on the crank position sensor 2P connector. • The gap between the flywheel and CPS should within 0.7～1.0mm. • Measure the resistance between the CPS (Blue –Sky Blue)Standard is ：115±10 Ω

5

FUEL INJECTION SYSTEM FUEL LINE INSPECTION

FUEL PUMP INSPECTION • Turn the ignition switch ON and confirm that the fuel pump operates for a few seconds. • If the fuel pump does not operate, inspect as follow: • Disconnect the fuel pump 2P connector. • Turn the ignition switch Off and measure the resistance between the terminals. • Connection: Gray (+) Black/Purple (-) The standard is 4±1Ω

6

FUEL INJECTION SYSTEM • Disconnect the pressure regulator output hose and plug the hose. • Slowly catch the remaining fuel using an approved gasoline container.

• Install the 3-way connector and attach the fuel pressure gauge as shown. • Connect the battery negative cable. • Start the engine. • Read the fuel pressure at idle speed. IDLE SPEED: 1500±100 RPM STANDARD:300±10 kPa

7

FUEL INJECTION SYSTEM IGNIITION COIL

• Turn the ignition switch OFF. • Disconnect the ignition coil 2P connector. • Check for loose or poor contact on the ignition coil 2P connector. • Check for resistance between the ignition coil connector terminal and ground. Standard: 0.63±0.05Ω

8

FUEL INJECTION SYSTEM THROTTLE POSITION SENSOR (TPS)

• Key-On but not ignition. • Measure the voltage between as below A-B • Input voltage at TPS: 5±0.1V • Onput voltage at throttle closed:0.5±0.05V • Onput voltage at throttle full open:3.9±0.2V • WARNING! Never loosen the screw of TPS, result the unsteady idle.

9

FUEL INJECTION SYSTEM IDLE SPEED CONTROLLER (ISC)

• Turn the ignition switch OFF. • Disconnect the ignition coil 4P connector. • Measure the resistance between A-D and B-C as below • The standard are all follow 50±0.5 2Ω.

10

FUEL INJECTION SYSTEM TEMP & ABSOLUTE PRESSURE SENSOR (T-MAP)

• Turn the ignition OFF. • Disconnect the T-MAP sensor 4P connector. • Check for loose or poor contact on the MAP sensor connector. • Measure the resistance between as below pin 3-4 •The standard are below

11