Ford Corsar Repair Manual page 331

TROUBLE DIAGNOSES
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Diagnostic Procedure 19
-
Surge
CHECKEXHAUSTGASSENSOR.
1. See "MIR FIC MNT" in
@
"DATA MONITOR" mode.
2. Maintaining engine at 2,000
rpm under no-load (with en-
gine warmed up sufficiently,),
check to make sure that the
monitor fluctuates between
"LEAN" and "RICH" more
than 5 times during 10 sec-
onds.
R I F H - + L E A N - t R I e
1
time 2 times
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LEAN
-+
RICH
.......
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1. Set "Exhaust gas sensor
@
monitor'' in the self-diagnostic
Mode
I L
(See page ES- 123)
2. Maintaining engine at 2,000
rpm under no load, check that
RED L.E.D. on the E.C.U. goes
ON and OFF more than 5
times during 10 seconds.
TRY A KNOWN GOOD E.C.U.
? : ; l a c e exhaust gas sen-
(
INSPECTION END
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