63" Crankshaft Rotation Signal Circuit Malfunction - Suzuki RM-z450 Owner's Service Manual

"63" CRANKSHAFT ROTATION SIGNAL CIRCUIT MALFUNCTION

DETECTED CONDITION
The signal does not reach ECM for 30 sec. or more. • Metal particles or foreign material being stuck on
Crankshaft rotation signal sensor
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle pointed tester probe to prevent the terminal damage or terminal bend.
INSPECTION
Step 1
1) Stop the engine.
2) Check the crankshaft rotation signal sensor coupler for loose
or poor contacts.
If OK, then measure the crankshaft rotation signal sensor
resistance.
3) Disconnect the crankshaft rotation signal sensor coupler and
measure the resistance.
# Crankshaft rotation signal sensor resistance:
B/R
R/W B/W
CAUTION
0.1 – 0.8 Ω (B/R – R/W)
POSSIBLE CAUSE
the crankshaft rotation signal sensor and rotor tip.
• Crankshaft rotation signal sensor circuit open or
short.
• Crankshaft rotation signal sensor malfunction.
• ECM malfunction.
B
1
1
FI SYSTEM DIAGNOSIS 12-44
ECM
SIG