Suzuki 2009 LT-A750XK9, Service Manual

Page: 99 / 711

Engine General Information and Diagnosis: 1A-26
1 4) 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, W – Ground)
Are the resistance and continuity OK?
Go to Step 2. Replace the CKP
sensor with a new one.
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
5.0 V and more
((+) terminal: Bl – (–) terminal: W)
2) Repeat the above test procedure a few times and
measure the highest peak voltage.
Is the voltage OK?
• Bl or W wire open or
shorted to the
ground, or poor “9” or
“18” connection.
• If wire 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)”.
• 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)”.
Step Action Yes No
(A)
I831G1110021-01
Peak volt
adaptor
I831G1110022-01