Service manual

7-25
E
– +
ELEC
IGNITION SYSTEM
CAM POSITION SENSOR
1. Measure:
• Cam position sensor output voltage
Out of specification
→
Replace.
NOTE:
When operating the Yamaha Diagnostic Sys-
tem, electric power is supplied to the cam posi-
tion sensor.
Test harness (3 pins):
YB-06777/90890-06777
Cam position sensor output
voltage:
Green/orange (G/O) –
Black/orange (B/O)
Position Voltage (V)
A More than 0.8
B Less 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 holding
a screwdriver to the sensor and when
holding it away from the sensor.