Opel Frontera UBS. Manual - part 2815

8D–460

WIRING SYSTEM

5-3  Needle Overshoots (Goes Up To 15 (x100 kPa))

• IS THE CONNECTOR OF THE OIL PRESSURE UNIT   E-2

OR   E-12    CONNECTED SECURELY?

 YES

• IS THE OIL PRESSURE UNIT NORMAL?

YES

YES

NO

NO

NO

• IS THERE AN OPEN CIRCUIT  IN THE CIRCUIT 
  BETWEEN THE OIL PRESSURE UNIT AND THE 
  OIL PRESSURE GAUGE?

RECONNECT THE CONNECTOR 

REPLACE THE OIL PRESSURE UNIT

REPLACE THE METER ASSEMBLY

REPAIR A POOR CONNECTION AT THE CONNECTORS 
OR AN OPEN CIRCUIT IN THE CIRCUIT

WIRING SYSTEM

8D–461

6.  Fuel Gauge

6-1  Fuel Gauge Needle Does Not Move

•

IS THE CONNECTOR OF THE FUEL TANK UNIT   F-5
CONNECTED SECURELY?

YES

•

•

•

DISCONNECT THE CONNECTOR OF THE FUEL TANK UNIT
CONNECT A 3.4W BULB BETWEEN THE HARNESS SIDE
CONNECTOR 2   F-5   AND THE GROUND OF THE FUEL TANK
UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE FUEL
GAUGE NEEDLE FLUCTUATE AFTER ABOUT 90 SECONDS?

YES

RECONNECT THE CONNECTOR

NO

NO

•

IS THERE CONTINUTY BETWEEN THE FUEL TANK UNIT
CONNECTOR TERMINALS 2   F-5   AND 1   F-5   ?

•

IS THE CIRCUIT BETWEEN THE FUEL GAUGE AND THE FUEL
TANK UNIT NORMAL?

YES

NO

REPLACE THE FUEL TANK
UNIT

YES

REPLACE THE METER
ASSEMBLY

NO

REPAIR A POOR CONNECTION
AT THE CONNECTORS OR AN
OPEN CIRCUIT IN THE CIRCUIT

REPAIR A POOR
CONNECTION AT THE
CONNECTORS OR AN OPEN
CIRCUIT BETWEEN THE
FUEL TANK UNIT AND THE
GAUGE

8D–462

WIRING SYSTEM

6-2  Even When The Tank Is Filled Up With Fuel, The Needle Does Not Reach “F”

•

WHEN INSERTING AND PULLING OUT THE CONNECTOR
  F-5   OF THE FUEL TANK UNIT SEVERAL TIMES, DOES
THE POINTER OF THE FUEL GAUGE STAY AT THE SAME
POSITION?

YES

•

•

•

DISCONNECT THE CONNECTOR OF THE FUEL TANK UNIT
CONNECT THE FUEL TANK UNIT HARNESS SIDE
CONNECTOR 1   F-5   AND 2   F-5    WITH A LEAD WIRE
WHEN THE STARTER SW IS TURNED ON, DOES THE
NEEDLE OVERSHOOT TO “F” AFTER ABOUT 5 MINUTES?

YES

REPAIR A POOR CONNECTION AT THE CONNECTOR
OF THE FUEL TANK UNIT

NO

NO

REPLACE THE METER ASSEMBLY

•

•

REMOVE THE FUEL TANK UNIT
DOES THE FLOAT ARM OPERATE SMOOTHLY?

YES

•

IS THE RESISTENCE
VALUE OF THE FUEL TANK
UNIT NORMAL?

NO

REPLACE THE FUEL
TANK UNIT

WIRING SYSTEM

8D–463

6-3  Even When The Tank Is Not Full of Fuel, The Needle Overshoots (Or Goes Up To “F”)

•

•

DISCONNECT THE CONNECTOR OF THE FUEL TANK
UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE
NEEDLE STILL POINT TO “F”?

YES

•

IS THE CIRCUIT BETWEEN THE FUEL TANK UNIT AND THE
FUEL GAUGE NORMAL?

NO

YES

•

ARE THE RESISTANCE VALUES OF THE
FUEL TANK UNIT AT “E” AND “F” POINTS
NORMAL?

YES

NO

REPAIR A SHORT CIRCUIT
IN THE CIRCUIT

NO

REPLACE THE FUEL TANK UNIT

•

•

REMOVE THE FUEL TANK UNIT
DOES THE FLOAT ARM OPERATE SMOOTHLY?

REPLACE THE METER
ASSEMBLY