1975 Datsun 280z FSM - Spooled up Racing

TROUBLE DIAGNOSES
The electronic fuel injection system
must be checked in accordance with
the troubleshooting chart. When using
this chart, make sure that the ignition
system, battery and transistor ignition
system are all in good condition.
In the troubleshooting chart,
trouble phenomena are listed vertically
while the inspection items are arranged
Engine Fuel
horizontally. The items which must be
checked are marked with an "o" for
each trouble phenomenon. Proceed
from left to right in the inspection
item section.
Check the harness connector for
correct insertion.
Then, check the harness together
with the unit for continuity. A continuity
test on the harness may be
carried out on the 35-pole pin of the
control unit and other necessary portions
with a circuit tester.
Inspection procedure (Proceed from left to right)
^\^^ Inspection
^ • ^ item
Trouble ^\^^
phenomenon ^\^
Harness
continuity
test (together
with unit)
Fuel pump
sound
Control unit
operation at
cranking
Injector
sound
Cold start
valve system
condition
Air regulator
system
condition
Relay
Engine can not be started
0
0
0
0
0*1
0
Engine stalls
0
0
0
0
0*2
O
Lack of power
0
0
Engine breather
0
Unstable
^ warmin g" u P
0
0
0
g
After warming-up
0
0
Higher idling speed
Running-on or dieseling
Back fire
After fire
0
0
0
0
Abnormal fuel consumption
0
O
*1 Check this item when trouble
occurs in cold weather only.
*2 Check this item when trouble
occurs during warming-up.
EF-18