GxT Ferret 54 ENGINE DIAGNOSTIC CENTER - Manual (Page 31)

PRIMARY
AMPS
BUILD
mSec
COIL
PEAK
AMPS
SPARK
LINE
PRIMARY
VOLTS
0 v
SPARK
BURN
TIME
IGNITION TIMING CYCLE
BUILD
(DWELL)
AMPS
HOLD
DWELL SECTION
BATTERY
VOLTAGE
INDIVIDUAL COIL READINGS
Press SELECT to see individual coil readings. There are three screens. The numerical
screen shows Peak Amps, Build and Drive milliSeconds per coil. In this eight cylinder
example, the first coil is the one that fires the plugs in cylinders one and six (1-6). Two
more screens show peak amps and build milliSeconds in bar graph format. Press
SELECT to move among screens.
Peak Amps 9.5 9.4 9.5 9.5
Build mS 3.5 3.6 3.5 3.5
Drive mS 3.7 3.8 3.7 3.7
Per Coil 1-6 8-5 4-7 3-2
PEAK AMPS
Look for equal current in each ignition coil, between 4 and 11 amps. If the primary
ignition supply circuit has bad connections, all amps may be low.
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Ω
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Peak Amps я я я я
Per Coil 1-6 8-5 4-7 3-2
4-2
Ignition Coil Primary Current and Voltage