Yamaha Waverunner FX 160, Service Manual

Page: 566 / 774

7-23
E
– +
ELEC
IGNITION SYSTEM
CAM POSITION SENSOR
1. Measure:
• Cam position sensor output voltage
Out of specification
→
Replace.
NOTE:
• The cam position sensor contains two indi-
vidual sensors as shown in the illustration:
sensor 1
1
and sensor 2
2
.
• To measure the output voltage, pass the
screwdriver under the measuring positions
A, B (center), and C of the cam position sen-
sor in order.
• When operating the Yamaha Diagnostic Sys-
tem, electric power is supplied to the cam
position sensor.
Test harness (3 pins):
New: YB-06877
Current: YB-06777
Test harness HM090-3 (3 pins):
New: 90890-06877
Current: 90890-06777
Cam position sensor output
voltage:
Green/orange (G/O) –
Black/orange (B/O)
Position Voltage (V)
A More than 4.8
B Less than 0.8
C More than 4.8
Measurement steps:
• Remove the cam position sensor.
• Connect the test harness (3 pins) to the
cam position sensor.
• Operate the Yamaha Diagnostic System.
• Measure the output voltage when a
screwdriver is passed under the cam
position sensor in the direction shown.
1
2
A
B
C