Individual Fuel Injector Operating Sound Inspection; Fuel Injector Operating Signal Inspection - Suzuki DF70A Service Manual

Individual Fuel Injector Operating Sound
Inspection
1) Disconnect the ignition coil lead wire connectors
from all of the ignition coils.
2) Disconnect the fuel injector lead wire connector and
connect the test cord.
Special tool
(A): 09930–89260 (Injector test cord (A))
(A)

Fuel Injector Operating Signal Inspection

(A)
2
4
37 38 39 40 41 42 43 44 45 46 47 48 49 55 56
50 51 52 53 54 68 69
1. Black connector
2. White connector
Z9J0111706011
" c l i c k "
I9J011170055-01
ECM
1
57 58 59 60 61 62 63 64 65 66 67
70 71 72
1 2 3 4 5 6 7 8 9 10 11 12 13 19 20 21 22 23 24 25 26 27 28 29 30 31
14 15 16 17 18 32 33 34
3. Peak voltmeter stevens CD-77
4. Gray test cord connector side
3) Connect the Gray wire to body ground.
4) Momentarily touch the Black/Yellow wire to the
starter motor magnetic switch terminal "B"
(connected to battery positive (+) terminal) and
check for injector operating sound.
If out of specification, replace fuel injector.
CAUTION
Connecting the fuel injector to battery
positive for more than a few seconds may
cause injector overheating and possible
injector solenoid failure.
Fuel injector operating sound
"click"
1
1. Starter motor magnetic switch "B" terminal
(A)
35 36
2 3
45 47
5. Starter motor magnetic switch "B" terminal
Fuel System:
B/Y
Gr
I9J011170056-01
Z9J0111706012
5
1
59
71
(A)
I9J011170022-03
1G-22