Honda SH125 Manual page 320

IGNITION SYSTEM
With the ignition coil primary wire connected, con-
nect the lmrie diagnostic tester or peak voltage
adaptor probes to the ignition coil primary terminal
and ground.
TOOLS:
lmrie diagnostic tester (model 625) or
with commercially available digital multimeter
(impedance 10 MCUDCV minimum)
Peak voltage adaptor 07HGJ-0020100
CONNECTION: Yellow/blue (+)
-
Ground
(-1
Turn the ignition switch to ON and measure the ini-
tial voltage a t this time.
STANDARD: Battery voltage
If the initial voltage cannot be measured, check each
item in the troubleshooting chart (page 18-4).
Turn the ignition switch to
ON
and squeeze brake
lever fully.
Crank the engine with the starter switch and mea-
sure the ignition coil primary peak voltage.
PEAK VOLTAGE: 100 V minimum
If the peak voltage is abnormal, check each item in
the troubleshooting chart (page 18-4).
CRANKSHAFT POSITION (CKP)
SENSOR PEAK VOLTAGE
Check all system connections before this inspec-
tion. Poor connected connectors can cause incor-
rect readings.
Remove the luggage box (page 2-5).
Turn the ignition switch to
OFF.
Disconnect the engine control module (ECM) 32P
connector by releasing the lock lever.
Connect the lmrie diagnostic tester or peak voltage
adaptor probes to the ECM connector terminals.
TOOLS:
lmrie diagnostic tester (model 6251 or
with commercially available digital multimeter
(impedance 10 MQ/DCV minimum)
CONNECTION: Yellow (+)
-
White/yellow
(-1
Turn the ignition switch to ON and squeeze brake
lever fully.
Crank the engine with the starter switch and mea-
sure the CKP sensor peak voltage.
PEAK VOLTAGE: 0.7 V minimum
If the peak voltage measured a t the ECM connector
is abnormal, measure the peak voltage at the CKP
sensor connector.
Peak voltage adaptor 07HGJ-0020100
18-6