Fuel Pump; Fuel Tank Inspection; Fuel Tank Installation; Fuel Pump Quick Test - TGB EST 1000 Service Manual

4-1. FUEL SYSTEM

Fuel Tank Inspection

▪ Inspect fuel tank for nay damages or cracks which may result in fuel leaks.
▪ Inspect tank and protector attachment points for damages.
▪ Inspect protector for damages.
▪ If cracks, gouges or other damages, which may lead to a fuel, leak, or damages to attachment points
that could prevent the tank from being secure are found, replace fuel tank.

Fuel Tank Installation

▪ For installation, reverse the removal procedure.
▪ Be sure to reinstall the rubber washers between the fuel tank and the frame.
▪ Be sure properly connect and route:
- Fuel tank vent hose.
- Fuel pup pressure hose.
- Electrical connector.
▪ Refuel tank and ensure there are no leaks by performing FUEL TANK LEAK AND PRESSURE TEST.

FUEL PUMP

Fuel Pump Quick Test

1. Turn ignition key to ON.
2. Listen the fuel pump operation.
3. Fuel pump should runs for a few seconds then stop.
If fuel pump does not runs, carry out the following step:
- Check fuel pump fuse.
- Check fuel pump relay.
- Carry out a fuel pump input voltage test.
Fuel Pump Input Voltage Test
1. Remove body cover.
2. Disconnect the fuel pump connector.
3. Turn ignition key ON.
4. Use multimeter measure and read:
Fuel pump connector:
Pin 3 and Pin 4 = battery voltage.
If battery voltage is read, carry out a fuel pump
resistance test.
If battery voltage is not read, test fuel pump
power input as follow:
Fuel pump connector Pin 4 and Battery
ground = Battery voltage.
4-1-6
Float(-)
1
2
Float(+)
Pin 1：Black/White
Pin 2：Green/White
Pin 3：Black
Pin 4：Black/ Purple
Pump(-)
3
4
Pump(+)