3-38 ENGINE CONTROL SYSTEM
CIRCUIT VOLTAGE TABLE
TERMINAL
CIRCUIT
STANDARD
CONDITION / REMARKS
NUMBER
VOLTAGE
1 –– –
2 Emergency stop switch Approx. 5V Ignition switch ON, plate IN
Approx. 0V Ignition switch ON, plate OUT
3 Buzzer cancel Approx. 12V Ignition switch ON, key pushed
Approx. 0V Ignition switch ON, key not pushed
4 Tachometer ––
5 Neutral switch / Engine start signal Approx. 0V Ignition switch ON, shift into NEUTRAL
Approx. 2.5V Ignition swich ON, shift into FORWARD or REVERSE
6 – 12V While engine cranking
6 –– –
7 Exhaust manifold temperature sensor 0.10 – 4.63V Ignition switch ON
8 –– –
9 Cylinder temperature sensor 0.10 – 4.63V Ignition switch ON
10 Ground for ECM ––
11 Ground for sensors ––
12 OIL lamp ––
13 Ground for ECM main relay ––
14 –– –
15 CMP sensor ––
16 PC communication ––
17 TEMP lamp ––
18 IAC valve solenoid (–) Approx. 12V Ignition switch ON
19 –– –
20 Ground for power source ––
21 –– –
22 No. 4 Fuel injector (–) Approx. 12V Ignition switch ON
23 Oil pressure switch Approx. 5V While engine running
Approx. 0V Other than above (Ignition switch ON)
24 CTP switch Approx. 5V Ignition switch ON, throttle not fully closed
Approx. 0V Ignition switch ON, throttle fully closed
25 REV-LIMIT lamp ––
26 CHECK ENGINE lamp ––
27 Buzzer ––
28 –– –
29 MAP sensor 0.20 – 4.53V Ignition switch ON
30 ECM power source Approx. 12V Ignition switch ON
31 IAT sensor 0.04 – 4.46V Ignition switch ON
32 Ground for ECM ––
33 CKP sensor
Approx. 0.3V or 5V
Ignition switch ON
34 O
2
feedback / PC communication ––
35 Power source for MAP sensor Approx. 5V Ignition switch ON
36 PC communication ––
37 Fuel pump (–) Approx. 0V For 3 sec. after ignition switch ON
While engine running
Approx. 12V Other than above (Ignition switch ON)
38 No. 3 Fuel injector (–) Approx. 12V Ignition switch ON
39 No. 2 Fuel injector (–) Approx. 12V Ignition switch ON
40 No. 1 Fuel injector (–) Approx. 12V Ignition switch ON
41 Resistor ––
42 Ground for power source ––
43 No. 2 & 3 Ignition (–) Approx. 12V Ignition switch ON
44 No. 1 & 4 Ignition (–) Approx. 12V Ignition switch ON