Suzuki VLR1800 Service Manual page 98

1A-29 Engine General Information and Diagnosis:
Step
1 7) If OK, then check the continuity between each terminal
and ground.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
CKP sensor continuity
∞ Ω (Infinity) (Bl – Ground, G – Ground)
Are the resistance and continuity OK?
2 1) Crank the engine several seconds with the starter motor,
and measure the CKP sensor peak voltage at the
coupler.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
CKP sensor peak voltage
1.5 V and more
((+) terminal: Bl – (–) terminal: G)
2) Repeat the 1) test procedures several times and
measure the highest peak voltage.
Is the voltage OK?
Action
(A)
I822H1110013-01
(A)
Peakvolt
adaptor
I822H1110014-01
Yes
Go to Step 2.
• G/W or G/Bl wire of
the harness side
open or shorted to
ground.
• Loose or poor
contacts on the CKP
sensor coupler or
ECM coupler
(Terminal "14" or
"31").
• If the wires and
connection are OK,
intermittent trouble or
faulty ECM.
• Recheck each
terminal and wire
harness for open
circuit and poor
connection.
• Replace the ECM
with a known good
one, and inspect it
again. Refer to "ECM
Removal and
Installation in Section
1C (Page 1C-1)".
No
Replace the CKP
sensor with a new one.
• Inspect that metal
particles or foreign
material stuck on the
CKP sensor and rotor
tip.
• If there are no metal
particles and foreign
material, then replace
the CKP sensor with
a new one. Refer to
"CKP Sensor
Removal and
Installation in Section
1C (Page 1C-1)".