Fuel And Emissions - Honda Prelude 1993 Service Manual

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Fuel and Emissions
S p e c i a l T o o l s
. . . . . . . . . . . - . . . . 1 ' l - 2
Comoonent Locations
I n d e x . . . . . . . . . . . . . . . . .
. . . . . . 1 1 - 3
System Description
V a c u u m C o n n e c t i o n s . . , . . . . . . . . . . . . . , . . . . . . . . . , .
1 1 - 8
E l e c t r i c a l C o n n e c t i o n s . . . . . . . . . . . . . . . . . . . . , . . . . . .
1 1 - 1 2
S y s t e m C o n n e c t o r s . . , . . . . . . . . . . , . . . , . . . . . . . . . . . .
1 l - 2 O
Troubleshooting
T r o u b l e s h o o t i n g
G u i d e . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 4 0
S e l f - d i a g n o s t i c P r o c e d u r e s , , , . . . . . . . . , . , . . . . . .
1 ' l - 4 2
H o w t o R e a d F l o w c h a r t s . . . . , . , . . . . . . . . . . , , . , . . 1 1 - 4 7
PGM-FI System
System Description
....... 1 1-48
Troubleshooting Flowchans
E n g i n e W i l l N o t S t a r t . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - S 0
E n g i n e C o n t r o l M o d u t e . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 5 1
H e a t e d O x y g e n S e n s o r , , . . . . . . . . . . , . . . . . . . . . . . .
1 1 - 5 6
H e a t e d O x y g e n S e n s o r H e a t e r . . . , . . . . . . . . . , . 1 1 - 5 8
F u e l S u p p l y S y s t e m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 6 2
Manifold Absolute Pressure Sensor .,...... l1-64
Top Dead Center/Crankshsft position/
C y l i n d e r P o s i t i o n S e n s o r . . . . . . . , . . . . . . . . . , . ' l 1 - 7 O
Engine Coolant Temperature Sensor ....... 11-72
T h r o t t l e P o s i t i o n S e n s o r . . . . . . . . . . . . . . . . . . . . - . . - 1 ' l - 7 4
I n t a k e A i r T e m p e r a t u r e S e n s o r . . . . . . . . . . . . . . . 1 1 - 7 6
B a r o m e t r i c P r e s s u r e S e n s o r . . . . . . . . . . . . . . . . . . . 1 l - 7 8
l g n i t i o n O u t p u t S i g n a l . . . . . . . . . . . . . . . . . . . . . . . . . . .
I 1 - 8 0
V e h i c l e S p e e d S e n s o r . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 - a 2
E l e c t r i c a l L o a d D e t e c t o r . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 8 4
Knock Sensor
l E x c e p t F 2 2 A 1 e n g i n e { S ) l . . . . . . . . . . . . . . . . . I 1 - 8 8
A / T F l S i g n a t A / B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 9 0
ldle Control System
S y s t e m T r o u b l e s h o o t i n g G u i d e . . . . . . . . . . . . . . . . . . I 1 - 9 2
System Description
....... 1 1-93
Troubleshooting Flowcharts
l d l e A i r C o n t r o l V a l v e . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 9 6
A i r C o n d i t i o n i n g S i 9 n a 1 . . . . . . . . . . . . . . . . . . . . . . . . .
I 1 - 9 8
A l t e r n a t o r F R S i g n a l
. . I 1 - 1 O O
AutomStic Transaxle
G e a r P o s i t i o n S i g n a l . . . . . . . . . . . . . . . .
. . . . . . . . . 1 1 - 1 0 2
S t a r t e . S w i t c h S i g n a l . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 1 0 4
B r a k e S w i t c h S i g n a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 1 0 6
Power Steering Pressufe Switch Signal ... 1l-108
F a s t l d l e T h e r m o V a l v e . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I 1 - 1 0 9
S t a r t i n g A i r V a l v e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - 1 1 O
l d l e S p e e d S e t t i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 - l j 1
Fuel Injectors
Iniector Resistor
Fuel Pressure Regulator
Fuel Filter
Intake Air System
System T.oubleshooting Guide
System Description
Air Cleaner
Intake Control Svstem
lExcept F22A't engine(Sll
1 1 - 1 3 r
1 1 - 1 3 2
1 1-1 33
1 - 1 1 3
' t - ' l 1 4
1 - 1 1 4
1 - 1 1 6
1 - ' t 2 1
' t - 1 2 2
1 - 1 2 3
1 - 1 2 4
t - t z o
1 - 1 3 0
1 - 1 3 4
1 - 1 3 8
1 - 1 3 9
1 - 1 4 3
1 - 1 4 8
1 - 1 4 9
1 - 1 5 0
1 - 1 5 0
1 - 1 5 1
1 - 1 5 3
1 - 1 5 9
1 - 1 6 0
Throttle Cable
Throttle Bodv
Intake Air Bypass Control System
lExcepr F22A'l engine(Sll
I n t a k e M a n i f o l d I F 2 2 4 1 e n g i n e ( S l ] . . . . . . . . . . . . .
Emission Control System
System Troubleshooting Guide ....
System Description
Tailpipe Emission
T h r e e W a y C a t a l y t i c C o n v e n e r . . . . . . . - . . . . . . . . . .
E x h a u s t G a s R e c i r c u l a t i o n S v s t e m . . . . . . . . . . . . .
Positive Crankcase Ventilation System .,.,.,..
Evaporative Emission Controls

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