Ford Corsar Repair Manual page 14

HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES
NOTICE
The flow chart indicates work procedures required to diagnose
problems effectively. Observe the following instructions before
diagnosing.
1) Use the flow chart after locating probable causes of a
problem following the "Preliminary Check" or the "Symp-
tom Chart".
2) After repairs, re-check that the problem has been com-
pletely eliminated.
3) Refer to Component Parts Location and Harness Layout
for the Systems described in each section for
identification/location of components and harness con-
nectors.
4) Refer to the Circuit Diagram for Quick Pinpoint Check.
If you must perform circuit continuity between harness
connectors in more detail, such as in case of sub-harness is
used, referto Wiring Diagram and Harness Layout in ELsec-
tion for identification of harness connectors.
5) When checking circuit continuity, ignition switch should be
"OFF".
6) Before checking voltage at connectors, check battery
voltage.
7) After accomplishing the Diagnostic Procedures and Elec-
trical Components Inspection, make sure that all harness
connectors are reconnected.
Example Only
INSPECTION START
CHECK POWER SUPPLY.
Check the following items
1
)
Harness continuity between
crank angle sensor and battery
terminal
@
and ground.
2) E.C.C.S. relay-l (See page ES
Battery voltagn should exist. -
1 70)
3) "BR" fusible link.
SGI 561
e5
m
m
-
SG 1562
4) Power source for E.C.U.
(See page ES- 1 70)
5) Ignition switch
Check the following items
2)
ground Ground c~rcuit for E.C.U.
1) Harness continuity between
crank angle sensor and
(See page ES- 1 70)
a
v
Resistance:
Approximately 052
l
O.K.
CHECK GROUND CIRCUIT.
3) 1)
Turn sensor Check ignition harness resistance switch connector. between "OFF".
2)
Disconnect crank angle
terminal
@
and ground.
N.G.
+