Fuel Gauge And Coolant Temperature Both Malfunction - Jeep J-10 Series 1982 Technical & Service Manual

1L-20 ENGINE INSTRUMENTATION
PROBLEM: FUEL GAUGE AND COOLANT TEMPERATURE
GAUGE BOTH MALFUNCTION (ALSO OIL PRESSURE
GAUGE ON CHEROKEE, WAGONEER AND TRUCK
STEP
CONNECT VOLTMETER TO
INPUT SIDE OF 3-AMP GAUGE
FUSE AND TO GROUND
SEQUENCE
RECORD
VOLTMETER-
INDICATION
TURN IGNITION SWITCH ON
REMOVE
INSTRUMENT
CLUSTER
DISCONNECT
INSTRUMENT
WIRE HARNESS
CONNECTOR
CONNECT VOLTMETER
TO IGNITION WIRE
TERMINAL
IN INSTRUMENT WIRE
HARNESS CONNECTOR
AND TO GOOD GROUND
• VOLTMETER
INDICATION
DIFFERENT
FROM STEP 1
• VOLTMETER
INDICATION
SAME AS
STEP1
CHEROKEE
WAGONEER
TRUCK
CJ
REPAIR OR REPLACE
INSTRUMENT PANEL
WIRE HARNESS
CHECK GAUGE NUTS FOR
OOSENESS AND CORROSION
LEAN
CONNECT JUMPER
WIRES AND VOLTMETER
JUMPER WIRE BETWEEN CLUSTER
CASE AND GROUND
JUMPER WIRE IN SERIES WITH
3-AMP FUSE BETWEEN BATTERY
VOLTAGE SOURCE AND IGNITION
FEED PIN TERMINAL ON CLUSTER
VOLTMETER LEAD TO CVR
INPUT TERMINAL
VOLTMETER LEAD TO GROUND
• VOLTMETER
INDICATION
SAME AS
STEP1
• VOLTMETER
INDICATION
DIFFERENT
FROM STEP 1
Chart 3
RESULT
-I STOP
80313A
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