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IDLE SPEED/IGNITION TIMINGIIDLE MIXTURE RATIO INSPECTION
1
K A ~ ~ E
I
4
Connect exhaust gas sensor harness to exhaust gas
sensor.
+
Replace exhaust gas sensor.
Set diagnosis mode of E.C.U. to Mode
11.
Make sure that inspection lamp on E.C.U. goes on
and off more than 5 times during 10 seconds
a t
2,000
rpm under no-load.
I
O.K.
+
Check fuel pressure regulator.
I
Check air flow meter.
I
(See page 174)
Check injector
(See page 192)
Clean or replace if necessary.
- -
Check engine temperature sensor.
(See page 176)
.c
Check E.C.U. function* by substituting another
known good E.C.U.
*:
E.C.U. may be the cause of a problem, but this
is rarely the case.
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