Fuel Injector Operating Signal Inspection - Suzuki GF60A Service Manual

Fuel Injector Operating Signal Inspection

2 (A)
4
37 38 39 40 41 42 43 44 45 46 47 48 49
50 51 52 53 54
1. Black connector
2. White connector
Special tool
(A): 09930–88730 (36-pin test cord set)
: Stevens peak reading voltmeter CD-77
Tester knob indication
NEG 50
1) Disconnect all ignition coil connectors from the ignition coils.
2) Connect the test cord between the ECM and wire harness as shown in figure, then turn ignition switch "ON".
3) Connect the tester probe ("–", Black) to the starter motor magnetic switch terminal "B" (connected to battery
positive (+) terminal) as shown in figure.
4) Connect the tester probe ("+", Red) to each terminal.
Injector
No.1
No.2
No.3
5) Crank the engine and measure the voltage.
If out of specification, inspect the related parts as described in "Fuel System Diagnostic Information / Fuel Injection
System Troubleshooting".
Refer to "Fuel System Diagnosis" (Page 1G-13) and "Fuel Injection System Troubleshooting" (Page 1G-14).
Fuel injector operating signal
Standard: Approx. 4 – 10 V or over
ECM
1
55 56 57 58 59 60 61 62 63 64 65 66 67
68 69 70 71 72
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18
3. Peak voltmeter stevens CD-77
4. Gray test cord connector side
Terminal
45
71
47
(A)
19 20 21 22 23 24 25 26 27 28 29 30 31
32 33 34 35 36
3
2
45 47
5. Starter motor magnetic switch "B" terminal
Wire color (Engine harness)
Fuel System:
5
71
(A)
O/B
B/Br
R/W
1G-23
ZAJ6111706012
1
IAJ611170053-01