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ENGINE (DIAGNOSTICS)
DESCRIPTION
Signal
Knock sensor
Shield
Backup power supply
Control module power sup-
ply
Sensor power supply
#1
#2
Ignition control
#3
#4
#1
#2
Fuel injector
#3
#4
Signal 1
Fuel pump
control unit
Signal 2
A/C relay control
Radiator fan relay 1 control
Radiator fan relay 2 control
Malfunction indicator light
Engine speed output
Purge control solenoid valve
Signal
Manifold abso-
Power
lute pressure
supply
sensor
Ground
(sensor)
Blower fan switch
Power steering oil pressure
switch
Front oxygen (A/F) sensor
signal (+)
Front oxygen (A/F) sensor
signal (−)
Front oxygen (A/F) sensor
shield
SSM communication line
GND (injector)
GND (sensor)
GND (ignition system)
GND (power supply)
GND (control system)
Engine Control Module (ECM) I/O Signal
Termi-
Connector
nal
Ignition SW ON
No.
No.
(engine OFF)
B136
25
B136
33
B135
19
B135
5
B135
6
B136
16
B135
18
B135
17
B135
16
B135
16
B136
6
B136
5
B136
4
B136
3
B137
28
B135
27
ON: 0.5 or less
B135
33
OFF: 10 — 13
ON: 0.5 or less
B135
25
OFF: 10 — 13
ON: 0.5 or less
B135
24
OFF: 10 — 13
B134
17
B134
23
ON: 1 or less
B134
14
OFF: 10 — 13
B136
22
B136
16
B136
35
B137
13
OFF: 10 — 13
B137
10
B134
33
B134
26
B134
25
1 or less ←→ 4 or more
B137
20
B137
7
B136
35
B135
12
B135
4
B135
1
B137
1
B137
2
EN(H4DOTC)(diag)-16
Signal (V)
Engine ON
(idling)
2.8
0
10 — 13
13 — 14
10 — 13
13 — 14
10 — 13
13 — 14
5
0
13 — 14
0
13 — 14
0
13 — 14
0
13 — 14
10 — 13
1 — 14
10 — 13
1 — 14
10 — 13
1 — 14
10 — 13
1 — 14
10 — 13
13 — 14
0 or 5
0 or 5
ON: 0.5 or less
OFF: 13 — 14
ON: 0.5 or less
OFF: 13 — 14
ON: 0.5 or less
OFF: 13 — 14
—
—
0 — 13 or more
ON: 1 or less
OFF: 13 — 14
1.7 — 2.4
1.1 — 1.6
5
0
ON: 0
ON: 0
OFF: 13 — 14
ON: 0
10 — 13
OFF: 13 — 14
2.8 — 3.2
2.8 — 3.2
2.4 — 2.7
2.4 — 2.7
0
1 or less ←→ 4 or
more
0
0
0
0
0
0
0
Reference
2.8
—
0
—
Ignition switch "OFF": 10
— 13
—
—
5
—
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
Waveform
—
Waveform
—
—
Model with A/C only
Light ON: 1 or less
—
Light OFF: 10 — 14
Waveform
Waveform
5
—
0
Model with manual A/C
only
—
—
—
0
—
—
0
—
0
—
0
—
0
—
0
—
0
—
0
—
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