Variable Camshaft Timing Control System; Checking The Cam Position Sensor - SELVA MARINE Blue Whale 250 EFI Service Manual

ECM and electronic throttle valve control system / Variable camshaft timing control system
Variable camshaft timing control
system

Checking the cam position sensor

1. Disconnect the cam position sensor cou-
pler.
2. Turn the engine start switch to ON.
3. Measure the input voltage at the cam
position sensor coupler (wiring harness
end). Check the wiring harness if below
specification.
PORT EX
STBD
AFT
2
AFT
6P23H11
8
IN
1
DC V
S6P28665EU
PORT IN
1
2
DC V
S6P28885EU
Cam position sensor input voltage:
Red/yellow (R/Y) 1 – Black (B)
12 V (battery voltage)
White/blue (W/L) 2 – Black (B)
(PORT EX)
White/black (W/B) 2 – Black (B)
(STBD IN)
White/green (W/G) 2 – Black (B)
(PORT IN)
4.75–5.25 V (reference data)
4. Turn the engine start switch to OFF.
1
2
3
4
5
6
7
8
9
8-28