Yamaha WaveRunner GP1300R Service Manual page 394

– +
ELEC
È
a
b
c
3 2
IGNITION SYSTEM
B/O
P/G
1
É
ATMOSPHERIC PRESSURE SENSOR
1. Measure:
• Atmospheric pressure sensor output
voltage
Out of specification → Replace.
Air pressure sensor tester
(3 pins):
YB-06769/YB-06869
Test harness EJ-II-3 (3 pins):
90890-06769/90890-06869
Lower unit pressure/vacuum
tester:
YB-35956-A
Vacuum/pressure pump gauge
set:
90890-06756
Atmospheric pressure sensor
output voltage:
Pink/green (P/G) –
Black/orange (B/O)
1 101.3 kPa
(1.01 kgf/cm
a 4.00 V
2 50 kPa
(0.5 kgf/cm
b 1.97 V
3 20 kPa
(0.2 kgf/cm
c 0.79 V
È: Output voltage
Measurement steps:
• Disconnect the atmospheric pressure
sensor.
• Connect the test harness (3 pins) to the
atmospheric pressure sensor.
• Operate the Yamaha Diagnostic System.
• Apply vacuum pressure to the atmo-
spheric pressure sensor and measure
the output voltage.
NOTE:
While the Yamaha Diagnostic System is oper-
ating, electric power is supplied to the atmo-
spheric pressure sensor.
7-21
E
2
, 14.4 psi):
2
, 7.1 psi):
2
, 2.8 psi):
É: Vacuum pressure