Suzuki VZ800 Service Manual page 373

9-24 ELECTRICAL SYSTEM
• Shift the transmission into the neutral and turn ignition switch
"ON".
• Crank the engine a few seconds with the starter motor by
depressing starter button and check the CKP sensor peak
voltage.
• Repeat the above test procedure a few times and measure
the highest peak voltage.
 Tester knob indication: Voltage ()
 CKP sensor peak voltage: 4.0 V and more
If the peak voltage is lower than the standard range, check the
peak voltage at the CKP sensor lead wire coupler.
• Remove the secondary gear case cover. (8-40)
• Remove the tool box. (8-41)
• Disconnect the CKP sensor lead wire coupler 2 and connect
the multi circuit tester with the peak volt adaptor.
Blue (+ Probe) – Green (- Probe)
• Measure the CKP sensor peak voltage at the CKP sensor
lead wire coupler.
 Tester knob indication: Voltage ()
 CKP sensor peak voltage: 4.0 V and more (Green – Bl)
If the peak voltage is lower than the standard range, check each
coupler at both ends of the circuit or replace the CKP sensor
and inspect it again.
CKP SENSOR RESISTANCE
• Measure the resistance between the lead wires and ground. If
the resistance is not as specified, the CKP sensor must be
replaced.
 09900-25008: Multi circuit tester set
 Tester knob indication: Resistance (Ω)
 CKP sensor resistance: 184 – 276 Ω (Green – Blue)
(Green/Yellow – Brown)
∞ Ω (Green – Ground)
ECM
CKP sensor
coupler
coupler
G/W
G/Y
Br
W
CKP sensor
CKP sensor
coupler
G G
Bl
Bl
CKP sensor
CKP sensor
coupler
CKP sensor
Peak
volt
adaptor
Peak
volt
adaptor