1A-34 Engine Control:
16 Bl/R Emergency stop switch
Approx. 5 V Ignition switch ON, Stop switch plate IN.
Approx. 0 V Ignition switch ON, Stop switch plate OUT.
17 — — — —
18 — — — —
19 — — — —
20 Lg/W Cylinder temp. sensor 0.14 – 4.75 V Ignition switch ON.
21 — — — —
22 P PTT switch DOWN
Approx. 12 V Ignition switch ON, PTT DN switch ON.
Approx. 0 V Ignition switch ON, PTT DN switch OFF.
23 Lbl PTT switch UP
Approx. 12 V Ignition switch ON, PTT UP switch ON.
Approx. 0 V Ignition switch ON, PTT UP switch OFF.
24 B Ground for ECM — —
25 B/W Ground for sensor — —
26 — — — —
27 LBl/W PTT relay UP
Approx. 0 V PTT switch UP free.
Approx. 12 V PTT switch UP Push.
28 — — — —
29 — — — —
30 — — — —
31 — — — —
32 W MAP sensor 0.79 – 4.2 V Ignition switch ON.
33 R Power source #1 for sensor Approx. 5 V Ignition switch ON.
34 — — — —
35 R/B Ground for ECM main relay
Approx. 12 V Ignition switch OFF.
Approx. 0.5 V
• Ignition switch ON.
• Engine cranking.
36 B/Bl Ignition switch Approx. 12 V Ignition switch ON.
37 — — — —
38 Y PC communication line (B) — —
39 — — — —
40 Y/Bl CMP sensor Approx. 0.3 V or 5 V Ignition switch ON.
41 Gr/Y No.3 Ignition coil (–) Approx. 0 V Ignition switch ON.
42 O No.1 Ignition coil (–) Approx. 0 V Ignition switch ON.
43 Y Trim gauge — —
44 Bl/W Buzzer — —
45 O/B No.1 Fuel injector (–) Approx. 12 V Ignition switch ON.
46 — — — —
47 R/W No.3 Fuel injector (–) Approx. 12 V Ignition switch ON.
48 W/Bl IAC valve #4 Approx. 12 V or 0 V Ignition switch ON.
49 Y/G Neutral switch
Approx. 12 V Ignition switch ON, Shift into Neutral.
Approx. 0 V
Ignition switch ON, Shift into Forward or
Reverse.
50 R/B CKP sensor — —
51 B Ground for ECM power — —
52 — — — —
53 — — — —
54 Bl No.2 Ignition coil (–) Approx. 0 V Ignition switch ON.
55 P/W REV-LIMIT lamp — —
56 Y/B Tachometer — —
57 G/Y TEMP lamp — —
58 R/G IAC valve #3 Approx. 12 V or 0 V Ignition switch ON.
59 — — — —
60 W/B IAC valve #1 Approx. 12 V or 0 V Ignition switch ON.
61 — — — —
62 O/Y PC communication line (A) — —
63 B Ground for power — —
64 O Buzzer cancel
Approx. 12 V Ignition switch ON. Key pushed in.
Approx. 0 V Ignition switch ON. Key not pushed in.
Terminal
Wire
color
Circuit Standard Voltage Condition / Remarks
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