5 - 45 ELECTRICAL
GEM Service Manual November 2007
ACCESSORY SYSTEM TROUBLESHOOTING CHART
(CONTINUED)
Condition Possible Causes and
Diagnostic Steps
Correction
Radio does not work. Visually inspect fuses F10 and
F3 or measure with an
ohmmeter to determine if it is
open.
Radio assembly (radio and
speakers).
Replace the fuses if they are open.
Use the Audio System Circuit Diagram to check
the wire connection and 12 VDC at PSDM S,
pins 1 and 6.
If there is 12 VDC at PSDM S, pins 1 and 6 with
the key switch ON and there are no loose or
broken connections in the wiring, replace the
radio.
If there is no voltage at PSDM S, pin 1 or pin 6
and the other accessories are working, replace
the PSDM.
Wiper does not work. The wiper motor has overload
protection and may stop working
for a short period of time if the
windshield is very dry. Wait a
moment and try operating the
wipers again.
If the wipers fail to operate,
visually inspect fuse F7 or
measure with an ohmmeter to
determine if it is open.
Wiper switch (part of the
multifunction switch).
Wiper motor.
Replace the fuse if open.
Check for voltage at the wiper motor when the
wiper switch is on. If voltage is not present, check
the wiper switch (part of the multifunction switch),
the voltage circuit, or the motor assembly.
Use the Wiper Circuit Diagram and a voltmeter to
isolate the problem.
Wiper works but the
windshield washer
does not.
Windshield washer pump.
Windshield washer switch.
Loose or broken wiring
connections.
Use the Wiper Circuit Diagram and a voltmeter to
check the voltage at the washer switch and the
voltage and ground connections at the washer
pump.
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