Daihatsu F300 Service Manual page 1096

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VOLTAGES AT ECU WIRING CONNECTORS
(General specifications)
Terminals
STD vOltage or
Conditions
resistance
(1)- (21)
Less than 1 0. Ignition switch OFF.
Less than 1V Ignition switch OFF (after more than one minute).
(2) -(21)
About battery
Ignition switch ON.
voltage
Less than
0.1V
Ignition switch OFF (after more than ten seconds).
(3) -(21)
About battery
Ignition switch ON.
voltage
(4) -(21)
About battery At all
times
(Measured voltage is lower than specified voltage
voltage only during starting period.)
About battery
Engine fully warmed up. All accessary switches turned OFF.
voltage
(5)- (21)
Less than 3V Idle-up VSV ON.
4.5- 5.5V
Ignition switch ON. T-terminal shorted
with
ground terminaL
Less than 1V
Throttle valve fully closed.
(6) -(21)
0 - 4.5 to 5.5V
Ignition switch ON. T-terminal shorted with ground terminaL
(Measured
Engine revolution speed builds at 3000
rpm
after it has fully
voltage varies) warmed up.
Less than O.W Ignition switch OFF.
(7)- (21)
About battery
Ignition SWitch ON.
voltage
(B) -[21)
Less than 0.1V Ignition SWitch OFF.
More than SV When ignition switch is set to ST position.
Less than 0.1V lgnttion switch OFF.
(9)- (21)
About battery
Ignition switch ON.
voltage
Less than 0.5V Ignition switch ON. Throttle valve fully closed.
(10)- (21)
About battery
Ignition switch ON. Throttle valve fully opened.
voltage
Less than 0.1V
Ignition switch ON. Headlamp SWitch and/or defogger switch
(11)- (21)
OFF.
More than 9V Ignition switch ON. Headlamp switch and/or defogger switch ON.
(12)- (22)
Less than
0.1V
Ignition switch OFF.
4.5- 5.5V
Ignition SWitch ON.
(13)- (22)
3.2- 4.0V
Ignition switch ON. Atmospheric pressure is 101.3 kPa
(760 mmHg).
Ignition switch ON. Air temperature inside surge tank:
(14)- (30)
1.5 * 3.0V
2ooc
(15)- (30)
0.40- 0.65V
Ignition switch ON. After engine has been warmed up fully.
(Cooling water temperature: 80 • OOOC.
(16) -(1)
Less than 1n
Ignition switch OFF.
Less than 1V Ignition switch OFF (after more than one minute).
(17)-[21)
About battery
lgnu·,on switch ON.
-
voltage
A-33'
APPENDIX
Remedies
Proceed to flow
chart{2).
Check power
supply.
Check power
supply.
Check power
supply.
Check power
supply.
Check idle-up
vsv control.
Proceed to flow
chart(2).
Check diagnos'1s
code.
Oxygen sensor
system.
Check power
supply.
Check power
supply.
Check T*terminal
wiring.
Throttle position
sensor system.
Check idle--up
VSV control.
Check
vee
wiring.
Check pressure
sensor.
Check intake air
temperature
sensor.
Check cooling
water
temperature
sensor.
Proceed to
flow
chart (2).
Check/repair
injector power
supply.