Daihatsu 1997 Terios J100 Service Manual page 245

EF–42
CHARACTERISTICS OF ECU OUTPUT (1)
Followings are standard voltage or resistance at ECU.
Item
Terminal
2 – 62
Power supply
11 – 62
43 – 62
20
52
Earth group
62
63
23 – 52
Pressure
24 – 52
sensor
25 – 52
Water temp.
sensor
57 – 52
Intake air temp.
sensor
56 – 62
Oxygen sensor
Cam angle
21 – 53
sensor
23 – 20
Throttle position
sensor 54 – 20
7 – 62
Vehicle speed
sensor
Ignition coil
63 – 29
drive
63 – 64
31 – 62
Injector drive
32 – 62
33 – 62
Fuel pump
or
drive
34 – 62
42 – 62
VF monitor
Alternator 28 – 62
Condition
All times
Ignition switch is turned on.
All times
Ignition switch is turned on.
Ignition switch is turned on.
Atmospheric pressure is
101 kPa.
Ignition switch is turned on.
After engine has warmed up
fully. (Cooling water
temperature is 80 - 90ϒC.)
Ignition switch is turned on. Air
temperature sensor inside the
surge tank is 20 (68).
Engine is rotating at about
3000 r.p.m., after engine has
warmed up fully.
While the engine is being
cranked by the starter motor.
Ignition switch is turned on.
Ignition switch is turned on.
Throttle valve is fully closed.
Ignition switch is turned on.
Throttle valve is fully opened.
Ignition switch is turned on.
When vehicle is moved.
(Measured voltage changes 4
times for movement of 1.6 m)
Ignition switch is turned on.
Ignition switch is turned on.
Ignition switch is turned on.
Engine is rotating at about
3000 r.p.m. after engine has
warmed up fully.
Engine is running.
Standard
voltage or resistance
Check back-up fuse in the
Battery voltage
relay box.
Check main relay in the
Battery voltage
relay box.
1 Ω or less
Check ground earth of
wiring harness.
4.5 - 5.5 V Check ECU power supply.
Check pressure sensor.
3.3 - 4.0 V
Check cooling water
0.4 - 0.65 V
temperature sensor.
Check air temp. sensor.
1.8 - 2.9 V
Voltage varies within
Check oxygen sensor.
0.2 - 1.0 V
0.1 - 0.3 V (AC range)
Check crank angle sensor.
4.5 - 5.5 V
1.0 V or less
Check throttle position
sensor.
3.5 - 4.1 V
Change in voltage
Check speed sensor.
between 0.1 V and
approx. 5 V
3 V or less
Check ignition coil.
Approx. battery voltage Check injector(s).
Approx. battery voltage Check fuel pump relay.
The terminal 34 is for
immobilizer system.
1.8 - 3.2 V
Check oxygen sensor.
Approx. battery voltage Check alternator.
Remedies
JEF00124-00704