Honda Prelude 1993 Service Manual page 394

Emission Control System
Exhaust Gas Recirculation {EGR) System {cont'd)
- --J-
-
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- h 6 l - - l 1 2 l -
-.-_:- /--\
VACUUM PUMP/
GAUGE
4973X-04't -XXXXX
I
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|
# 1 6 H O S E
EGR VALVE
- lho MIL has boon roported on.
' With rsNico chcck connoctot
iumped lsoo pa06 1142), cod.
12 is indicatod.
Do the FCM Reset Procedure {see
p a g e 1 1 - 4 3 1 .
Road tost necessary: Warm upthe
engine to normal operating tem-
perature {the radiator fan comes
o n ) .
Drive the car on lhe road for ap-
prox. 10 minutes. Keep th6 en-
gine speed in the 1.700-2.500
rpm.
Intormitlrnt t llur6, .yltom ir OK
at thi! tlm..
Chock for poor connaction! ot
loo.. wlr.s at Ot25, gl28llocat-
od at rlght ihock towqr), C463
(locatod at loft .ida und.r dashl,
C1 17 (EGR vllvo lift $n.or),
C31O GGB comrol .olonoid vrlv.l
and ECM.
ls the MIL on and does it
indicate code 12?
With the engine at idle, discon-
nect the # 16 hose from the EGR
valve and connect a vacuum
pump/gauge to the hose.
Disconnoct 2P connoctor from the
EGR control solgnoid valve and
check the # 16 hosg for vacuum
again.
ls there any vacuum?
Move the vacuum pump/gauge to
# 16 HOSE
EGR VALVE
LIFT SENSOR
EGR VALVE
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