Suzuki TU250X, Руководство по обслуживанию

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4-30 FI SYSTEM DIAGNOSIS
5) If OK, then check the continuity between each terminal and
ground.

CKP sensor continuity:
∞ Ω
(Infinity)
(Bl – Ground)
(G – Ground)

09900-25008: Multi circuit tester set

Tester knob indication: Resistance (
Ω
)
Are the resistance and continuity OK?
Step 2
1) Crank the engine a few seconds with the starter motor, and
measure the CKP sensor peak voltage at the CKP sensor
coupler.
2) Repeat the above test procedure a few times and measure
the highest peak voltage.

CKP sensor peak voltage: 2.0 V and more (
+
G –
-
Bl)
1
Peak volt adaptor

09900-25008: Multi circuit tester set

Tester knob indication: Voltage (

)
.
Is the voltage OK?
YES Go to Step 2.
NO Replace the CKP sensor with a new one.
YES
• Bl/R or B/Br wire open or shorted to ground.
• Loose or poor contacts on the CKP sensor cou-
pler or ECM coupler (terminal
B
or
T
).
• If wire and connection are OK, intermittent trou-
ble 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.
NO
• Inspect that metal particles or foreign material
stuck on the CKP sensor and rotor tip.
• If there are no metal particles and foreign mate-
rial, then replace the CKP sensor with a new
one.
1
2
ECM coupler (Harness side)
2