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INSTRUMENTS-INDICATORS-DIAGNOSIS
8-67
(2) Lower beam pattern of both headlamps.
(3) Horizontal line at the level of the headlamp
(4) Vertical line in line with the center
of
the left
headlamp.
(5) Vertical line in line with the center
of
the hood.
(6) Vertical line in line with the center of the right
centers.
headlamp.
PART 6
INSTRUMENTS--.INDlCATORS
INSTRUMENTS
SERVICE DIAGNOSIS
Condition
Possible Cause
Correction
ALL GAUGES READ
(a) Faulty voltage limiter.
(a) Test the voltage limiter. Replace as necessary.
HIGH ("against the peg") (b) Cluster not properly grounded to panel.
AFTER IGNITION
SWITCH
IS
TURNED
"ON".
GAUGE POINTERS DO
NOT
MOVE WHEN
IGNITION SWITCH
IS
TURNED "ON".
TEMPERATURE GAUGE
INDICATES NORMAL
gauge i s faulty.
OPERATION, BUT THE
DICATES A HIGHER
O R
LOWER FUEL
LEVEL
THAN
(a) Faulty voltage limiter or an open circuit on
battery side (input of limiter).
(a) Fuel tank sending unit or instrument panel fuel
(b)
Fuel tank is improperly grounded.
FUEL GAUGE
IN-
ACTUALLY
EXISTS.
FUEL GAUGE
IN-
DICATES CORRECTLY
BUT TEMPERATURE
GAUGE INDICATES
HIGHER
O R
LOWER
TEMPERATURE THAN
PERATURE.
ERRATIC
TEMPERATURE
GAUGE OPERATION.
ERRATIC OPERATION
O F
FUEL GAUGE.
ACTUAL
ENGINE TEM-
EXTERNAL LAMPS
OPERATE NORMALLY,
NO
INDICATION
ON
INSTRUMENT
CLUSTER
SYSTEM
DOES NOT
FLASH
(a) Faulty instrument panel temperature gauge,
wiring or faulty temperature sending unit in
engine.
(a) Loose or dirty electrical connections.
(a) Loose or dirty electrical connections or faulty
fuel tank sending unit.
TURN SIGNALS
(a) Faulty pllot bulb In instrument cluster.
(a) Faulty flasher unit.
(b) Faulty external bulb.
(e) Faulty contact in switch.
(b) Tighten cluster mounting screws.
(a) Test voltage limiter. Test wiring, repair or re-
place as necessary.
(a) Test sending unit and gauge.
(b)
Test fuel tank for a good ground.
NOTE: Testing the system with the tank sending
unit positioned for both "empty" and "full" is
usually sufficient to determine the calibration
in the range between these positions.
(a) Test wiring, repair or replace as necessary. Test
gauge and sending unit.
(a) Clean and tighten all electrical connections
and test the gauge operation.
(a) Test fuel gauge sending unit, and proceed as
follow,:
(1)
Clean and tighten all electrical connec-
tions.
(2)
Make sure that the fuel tank sending unit
i s grounded to the tank and that the tank i s
grounded to the frame.
(a) Replace bulb.
(a) Replace flasher.
(b)
Replace faulty bulb.
(c) Replace switch.
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