Diagnostic Code And Checking Step - Yamaha WaveRunner FX SHO Service Manual

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Diagnostic code and checking step

Diagnos-
Item
tic code
Pulser coil
13
malfunction
Engine temp
(*2)
15 sensor
malfunction
Knock sensor
17
malfunction
Battery voltage
19
malfunction
(*1)
: Pickup coil
(*2)
: Engine temperature sensor
(*3)
: This symptom may only be exhibited in certain environmental conditions.
WD: Refer to the wiring diagram.
Engine unit trouble analysis
Symptom
(*1)
Engine will not
start
Trolling speed
(*3)
is unstable
Normal
operation
Trolling speed
(*3)
is unstable
Checking steps
1. Measure the pickup coil output peak
voltage.
2. Measure the pickup coil resistance.
3. Check the white/black and black/
orange (W/B and B/O) pickup coil wir-
ing harness leads for continuity.
1. Check the engine temperature using
the YDIS.
2. Measure the engine temperature sen-
sor input voltage.
3. Check the black/yellow and black/
orange (B/Y and B/O) engine tempera-
ture sensor wiring harness leads for
continuity.
4. Measure the engine temperature sen-
sor resistance.
1. Check that the knock sensor is
installed correctly.
2. Measure the knock sensor resistance.
3. Check the green (G) knock sensor wir-
ing harness lead for continuity.
1. Check the battery voltage using the
YDIS.
2. Check the fuse for continuity.
3. Measure the stator coil output peak
voltage.
4. Measure the rectifier regulator output
peak voltage.
5. Check the battery cables and termi-
nals for proper connection.
9-9
E
Refer
to
page
7-14
7-14
WD
9-1
7-23
WD
7-23
5-90
7-28
WD
9-1
7-47
7-15
7-17
8-46