Opel Frontera UBS. Manual - part 757

8D–458

WIRING SYSTEM

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

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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

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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

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

YES

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IS THE RESISTENCE
VALUE OF THE FUEL TANK
UNIT NORMAL?

NO

REPLACE THE FUEL
TANK UNIT

WIRING SYSTEM

8D–459

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

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

YES

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

NO

YES

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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

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

REPLACE THE METER
ASSEMBLY

8D–460

WIRING SYSTEM

7.  Warning/Indicator Light

7-1  When The Parkng Brake Lever Is Pulled, The Indicator Light Does Not Light Up

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DISCONNECT THE PARKING BRAKE SWITCH CONNECTOR
CONNECT THE HARNESS SIDE CONNECTOR TO THE
GROUND
WHEN THE STARTER SWITCH IS TURNED ON, DOES THE
INDICATOR LIGHT LIGHT UP?

YES

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IS THE PARKING BRAKE SWITCH INSTALLED
TO THE CORRECT POSITION?

NO

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DOES THE INDICATOR LIGHT HAVE A BURNED OUT
BULB, OR IS THE SOCKET POORLY CONNECTED?

YES

REPLACE THE METER
ASSEMBLY

NO

REPLACE THE BULB OR REPAIR
THE POOR CONNECTION AT THE
SOCKET

YES

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WHEN THE PARKING BRAKE IS
OPERATED, IS THERE CONTINUITY
BETWEEN THE SWITCH CONNECTOR
1   B-27   AND GROUND?

NO

ADJUST THE INSTALLATION POSITION

NO

REPAIR OR REPLACE THE PARKING BRAKE SWITCH

WIRING SYSTEM

8D–461

7-2  Even When The Parking Brake Lever Is Released, The Indicator Light Does Not Go Off

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IS THE PARKING BRAKE SWITCH INSTALLED TO
THE CORRECT POSITION, AND DOES IT OPERATE
NORMALLY?

YES

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WHEN THE PARKING BRAKE SWITCH CONNECTOR
  B-27  DISCONNECTED, DOES THE INDICATOR
LIGHT GO OFF?

ADJUST THE SWITCH INSTALLATION POSITION,
OR REPAIR OR REPLACE THE SWITCH

NO

NO

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IS THE BRAKE FLUID SUFFICIENT?

YES

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IS THE BRAKE FLUID
SWITCH NORMAL?

NO

REPLENISH THE BRAKE
FLUID

YES

NO

REPLACE THE BRAKE
FLUID TANK

REPAIR A SHORT CIRCUIT
BETWEEN THE PARKING
BRAKE SWITCH CONNECTOR
1   B-27   AND 10   I-10   , OR
THE BRAKE FLUID SWITCH
CONNECTORS 2   C-15
AND 10   I-10   , OR VACCUM
SWITCH CONNECTOR 1  C-68
AND 10   I-10   

YES

REPLACE THE METER ASSEMBLY

IS THE VACCUM
SWITCH NORMAL?

YES

NO

REPLACE THE
VACCUM SWITCH

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