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ELEC
R/Y
B
#1 B/R
#2 B/W
#3 B/Y
#4 B/G
1
Ignition system
#1 B/R
#2 B/W
#3 B/Y
#4 B/G
B
3. Measure:
• ECM output peak voltage
Within specification → Replace the igni-
tion coil.
Below specification → Check the pickup
coil.
Refer to "Pickup coil."
WARNING
When checking the electrical components,
do not touch any of the connections of the
digital tester leads.
Measurement steps:
1. Disconnect the ignition coil couplers 1.
2. Measure the ECM output peak voltage as
shown.
NOTE:
• If measuring the ECM output peak voltage
under the "Cranking" condition, disconnect
the fuel injector couplers for all cylinders.
• To crank the engine, connect the engine
shut-off cord (lanyard) to the engine shut-off
switch, and then push the engine start
switch.
ECM output peak voltage:
#1 Black/red (B/R) –
Black (B)
#2 Black/white (B/W) –
Black (B)
#3 Black/yellow (B/Y) –
Black (B)
#4 Black/green (B/G) –
Black (B)
r/min
Cranking
V
2.5
7-13
E
Loaded
2,000
3,500
2.6
2.6
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