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16-108 ELECTRICAL SYSTEM
Relay Box
Relay Circuit Inspection (with the battery connected)
Battery
Connection
(+) (–)
Tes te r
Connection
Tester
Reading (Ω)
Fuel Pump
Relay
6-7 4-5 0
Fan Relay 15-16 14-17 0
Battery
Connection
(+) (–)
Tester Connection
DC 25 V Range
Tester
Reading (V)
Starter Circuit
Relay
13-9 8-9
Battery
Voltage
(+): Apply positive lead.
(–): Apply negative lead.
Diode Circuit Inspection
•
Remove the relay box (see Relay Box Removal).
•
Check conductivity of the following pairs of terminals (see
Relay Box Internal Circuit).
Diode Circuit Inspection
Tester Connection
1-8, 2-8, 9-10, 9-12, 9-13, 10-11, 10-12
The resistance should be low in one direction and more
than ten times as much in the other direction. If any diode
shows low or high in both directions, the diode is defective
and the relay box must be replaced.
NOTE
○
The actual meter reading varies with the meter or tester
used and the individual diodes, but generally speaking,
the lower reading should be from zero to one half the
scale.
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