Daihatsu F300 Service Manual page 1097

APPENDIX
Terminals
STD voltage or
Conditions Remedies
resistance
•
Less than 0.1Y Ignition switch OFF.
Check/repair
(18)- (21)
About banery
Ignition switch ON.
ECU power
voltage
supply.
Less than 3V Ignition switch ON. (Check engine lamp illuminated.)
Check power
(19). (21)
About battery
Engine is rotating. (Check engine lamp not illuminated).
supply for check.
voltage
engine lamp.
Less than 1V Ignition switch ON. Fuel pump is operating.
Check/repair fuel
(20). (21)
About battery
Ignition switch ON. Fuel pump is stopped.
pump power
voltage
supply.
(21)- Engine ground Less than 0.2!:1:
Ignition switch OFF.
Check ground
wiring.
(22). (21)
Less than 0.50:
Ignition switch OFF.
Replace ECU.
(23). (21)
About battery Engine is rotating. Air conditioner compressor is rotating. Check air
voltage (Genuine air conditioner--equipped vehicle.) conditioner wiring.
0 to Approx
Ignition switch ON.
Check speed
(26). (21)
battery voltage
When vehicle is moved. (Measured voltage changes 4 times for
sensor
movement of 1.5 m.)
About battery
Ignition switch ON. Throttle valve fully closed.
Check throttle
(28). (21)
voltage
Less than 0.5V Ignition switch ON. Throttle valve fully opened.
position sensor.
•
Less than 0.1V Ignition switch ON (after more than 60 seconds).
Check oxygen
(29)- (21)
sensor.
Voltage varies After engine has warmed up fully. When engine revolution is Check fuel
within 0 - 1.0V. held at 3000 rpm for more than two minutes: system.
(30). (21) Less than 1f.! Ignition switch ON.
Proceed to flow
chart(2).
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A-34