SELVA MARINE Blue Whale 250 EFI Service Manual page 355

Trouble
Item
code
Cam position
sensor
71
(STBD IN)
malfunction
Cam position
sensor
72
(PORT IN)
malfunction
Oil control
73
valve (STBD)
Oil control
74
valve (PORT)
Electronic
112
throttle valve
114
malfunction
*1: See the wiring diagram.
6P23H11
Symptom
Remarks
1. Check the cam timing using the
2. Measure the input voltage.
3. Check the white/black (W/B)
D —
4. Measure the output voltage.
5. Check the brim of the camshaft.
6. Check the battery cables and
1. Check the cam timing using the
2. Measure the input voltage.
3. Check the white/green (W/G)
D —
4. Measure the output voltage.
5. Check the brim of the camshaft.
6. Check the battery cables and
1. Check the valve operation using
2. Measure the resistance.
3. Measure the input voltage.
D —
4. Check the purple (Pu) lead (oil
5. Check the filter and plunger.
1. Check the ECM circuit.
2. Check the electronic throttle
J —
3. Check the electronic throttle
Troubleshooting the power unit
Checking steps
YDIS.
lead (cam position sensor-to-
ECM) for continuity.
terminals for proper connection.
YDIS.
lead (cam position sensor-to-
ECM) for continuity.
terminals for proper connection.
the YDIS.
control valve-to-ECM) for conti-
nuity.
valve circuit.
valve relay and fuse.
Refer
to
page
1
9-1
8-28
*1
2
8-28
5-27
3-15
3
9-1
8-28
4
*1
8-28
5
5-27
3-15
9-1
6
8-30
8-30
*1
7
8-30
8-22
8-23
8
8-21
9
9-10