ELECTRICAL
10.16
IGNITION SYSTEM
TROUBLESHOOTING
No Spark, Weak or Intermittent Spark
G
No 12 volt power or ground to CDI
G
Spark plug gap incorrect
G
Fouled spark plug
G
Faulty spark plug cap or poor
connection to high tension lead
G
Related wiring loose, disconnected,
shorted, or corroded
G
Engine Stop switch or ignition switch
faulty
G
ETC switch misadjusted or faulty
G
Poor ignition coil ground (e.g. coil
mount loose or corroded)
G
Faulty stator (measure resistance of
all ignition related windings)
G
Incorrect wiring (inspect color coding
in connectors etc)
G
Faulty ignition coil winding (measure
resistance of primary and
secondary)
G
Worn magneto (RH) end Crankshaft
bearings
G
Sheared flywheel key
G
Flywheel loose or damaged
G
Excessive crankshaft runout on
magneto (RH) end - should not
exceed .005
″
G
Faulty CDI module
CDI OUTPUT TEST USING
PEAK READING ADAPTOR
Re-connect all CDI wires to stator wires. Disconnect
CDI module wire from ignition coil primary terminal.
Connect one meter lead to engine ground and the
other to the ignition coil primary wire leading from the
CDI module. Set meter to read DC Volts.
Crank
engine and check output of CDI wire to coil.
Reconnect CDI wire to coil.
Output w/ Peak output tester
130 Vdc
Average Output w/ Digital Voltmeter
20 Vdc
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Summary of Contents for 2009 Trail Blazer 330
Page 94: ...ENGINE 3 48 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 110: ...FUEL SYSTEM CARBURETION 4 16 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 124: ...BODY STEERING SUSPENSION 5 14 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 196: ...ELECTRICAL 10 4 REVERSE LIMIT SYSTEM P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 226: ...ELECTRICAL 10 34 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 227: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BOSS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 228: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BOSS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 229: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BLAZER P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 230: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BLAZER P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...