Opel Frontera UBS. Service manual — part 2814

8D–456

WIRING SYSTEM

4-2 Gauge Reading Is Too Low (Or High)

•

DOES THE THERMOSTAT OPERATE NORMALLY?

YES

•

•

TURN THE STARTER SWITCH ON
WHEN INSERTING AND PULLING OUT THE ENGINE
COOLANT TEMPERATURE UNIT CONNECTOR 1 E-19 OR
1 E-23 SEVERAL TIMES, DOES THE INDICATION OF THE
ECT GAUGE VARY?

YES

REPLACE THE THERMOSTAT

NO

REPAIR A POOR CONNECTION AT THE CONNECTOR
OF THE ENGINE COOLANT TEMPERATURE UNIT

NO

•

IS THE ENGINE COOLANT TEMPERATURE UNIT NORMAL?

YES

REPLACE THE ENGINE
COOLANT TEMPERATURE
UNIT

NO

REPLACE THE METER
ASSEMBLY

WIRING SYSTEM

8D–457

4-3 Needle Overshoots (Goes Up To The “H” Range)

•

•

DISCONNECT THE CONNECTOR OF THE ENGINE
COOLANT TEMPERATURE UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE
POINTER REACH TO THE “H” RANGE?

YES

•

IS THERE A SHORT CIRCUIT BETWEEN THE
ECT UNIT AND THE ECT GAUGE?

YES

REPLACE THE ENGINE COOLANT
TEMPERATURE UNIT

NO

REPAIR THE SHORT CIRCUIT

NO

REPLACE THE METER ASSEMBLY

8D–458

WIRING SYSTEM

5. Oil Pressure Gauge

5-1 Needle Does Not Move

•

•

DISCONNECT THE CONNECTOR OF THE OIL PRESSURE UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE NEEDLE
REMAIN STILL?

YES

•

IS THERE A SHORT CIRCUIT BETWEEN THE OIL
PRESSURE UNIT AND THE OIL PRESSURE GAUGE?

YES

REPLACE THE OIL PRESSURE UNIT

NO

NO

REPLACE THE METER ASSEMBLY

REPAIR THE SHORT CIRCUIT

WIRING SYSTEM

8D–459

5-2 Oil Pressure Gauge Reading Is Too Low (Or High)

•

(WHEN THE OIL PRESSURE IS MEASURED WITH THE MASTER
METER)
DOES THE OIL PRESSURE GAUGE SHOWS THE CORRECT
READING?

YES

•

WHEN INSERTING AND PULLING OUT THE OIL
PRESSURE UNIT CONNECTOR E-2 OR E-12
SEVERAL TIMES, DOES THE INDICATION OF THE OIL
PRESSURE GAUGE CHANGE?

YES

CHECK FOR POSSIBLE ENGINE PROBLEM
(REFER TO ENGINE SECTION)

NO

REPAIR A POOR CONNECTION AT THE CONNECTOR
OF THE OIL PRESSURE UNIT

NO

•

IS THE OIL PRESSURE UNIT NORMAL?

YES

REPLACE THE OIL
PRESSURE UNIT

NO

REPLACE THE METER
ASSEMBLY