Suzuki DF150 Service Manual page 114

IGNITION COIL OPERATING SIGNAL
34 pin test cord
(White connector)
27 28 29 30 31 32 33 34 35 36 37 38 39 44
40 41 42 43 57
! 09930-89340: 26-pin & 34-pin test cord
Peak voltmeter Stevens CD-77
' Tester range: SEN 50
1. Connect test cord between ECM and wire harness as shown
in figure then turn ignition switch ON.
2. Connect the tester probe ("+", Red) to each terminal.
Ignition coil Terminal
No. 1 42
No. 2 50
No. 3 39
No. 4 45
3. Connect the tester probe ("-" Black) to No. 46 terminal (or
to body ground).
4. Crank engine and measure voltage.
Ignition coil operating signal: Approx. 5 V
ECM
45 46 47 48 49 50 51 52 53 54 55 56
58 59 60
(Black connector)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
(White connector)
42
Wire color
(engine harness)
O
Bl
Gr/Y
Lg/R
26 pin test cord
(Black connector)
39
(White connector)
ENGINE CONTROL SYSTEM
45 46 50
(Black connector)
34 pin test cord
3-55