Page 170 of 1954

Idle Contro l Syste m
Idle Ai r Contro l (IAC ) Valv e
The HD S o r th e sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0511 : A proble m in th e Idl e Ai r Contro l (IAC )
valve circuit .
— Th e MI L ha s bee n reporte d on .
— DTCP051 1 i s stored .
Problem verification :1. D o th e PC M Rese t Procedure .
2 . Star t th e engine .
Is DTC P0511 indicated?
YES
Chec k fo r a n ope n i n the wir e
(IGP 1 line) :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e IA C valv e con -
nector .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Measur e voltag e betwee n bod y
groun d an d th e IA C valv e con -
necto r termina l No . 2 .
I s ther e batter y voltage ?
I s ther e batter y voltage ?
YES
Chec k th e IA C valv e function :
Momentaril y connec t PC M con -
necto r terminal s A 5 an d A1 2 wit h
a jumpe r wir e severa l times .
Doe s th e IA C valv e click ?
YES
Substitut e a known-goo d PC M
an d recheck . I f symptom/indica -
tio n goe s away , replac e th e origi -
nal PCM .
NO
Intermitten t failure , syste m is O K
a t thi s time . Chec k fo r poo r con -
nection s o r loos e terminal s a t
C253 , (locate d a t righ t shoc k
tower) , C12 9 (IA C valve ) an d
PCM .
Repai r ope n in th e wir e betwee n
IA C valv e an d PGM-F I mai n relay . Wir
e sid e o f femal e terminal s
Repai r ope n o r shor t i n th e wir e
betwee n PC M (AS ) an d IA C valve .
Replac e th e IA C valve .
ProCarManuals.com
Page 172 of 1954

Emission Contro l Syste m
Exhaus t Ga s Recirculatio n (EGR ) Syste m (cont'd )
The HD S o r th e sca n tool indicate s Diagnosti c Trouble Code (DTC ) P0404 : An insufficien t lift o f th e Exhaus t Gas
Recirculatio n (EGR ) valve .
Is DT C P040 4 indicated ?NO
YE S
Chec k fo r vacuu m to th e EG Rvalve :1. Disconnec t th e No . 1 1 hos e fro mthe EG R valve .2. Connec t vacuu m pump/gaug e
t o th e hose .
3. Star t th e engin e an d le t i t idle .
Intermitten t failure , syste m is O K
a t thi s time . Chec k fo r poo r con -
nection s o r loos e terminal s a t
C251 , C25 4 (locate d a t righ t shoc k
tower) , C10 7 (EG R valve ) an d
PCM .
Is ther e an y vacuum ?NO
VACUU M PUMP/GAUGE , 0-3 0 in.H g
A973 X - 04 1 - XXXX X
YES
No. 1 1 VACUU M
HOS E
Chec k fo r a malfunctio n i n th e
EG R valv e vacuu m contro l
solenoid valve :1. Disconnec t th e contro l bo x 4 P
connector .
2 . Rechec k th e No . 1 1 hos e fo r
vacuum . (T
o pag e 11-86 )
(T o pag e 11-86 )
(cont'd )
11-85
— Th e MI L ha s bee n reporte d on .
— DT C P040 4 is stored .
Proble m verification :
1 . D o th e PC M Rese t Procedure .
2 . Connec t th e SC S servic e con -
nector .
3. Star t th e engine . Hol d th eengin e a t 3,00 0 rp m wit h n o
loa d (i n Par k o r neutral ) unti l
th e radiato r fa n come s on .
4 . Driv e th e vehicl e o n th e roa d fo r
abou t 1 0 minutes . Tr y t o kee pthe engin e spee d i n th e 1,70 0 -
2,50 0 rp m range .
ProCarManuals.com
Page 178 of 1954

Evaporative Emission (EVAP) Controls
Description
The evaporative emission controls are designed to minimize the amount of fuel vapor escaping to the atmosphere. The
system consists of the following components:
A. Evaporative Emission (EVAP) Canister
An EVAP canister is used for the temporary storage of fuel vapor until the fuel vapor can be purged from the EVAP
canister into the engine and burned.
B. Vapor Purge Control System
EVAP canister purging is accomplished by drawing fresh air through the EVAP canister and into a port on the throttle
body. The purging vacuum is controlled by the EVAP canister purge valve.
C. Fuel Tank Vapor Control System
When fuel vapor pressure in the fuel tank is higher than the set value of the EVAP two way valve, the valve opens and
regulates the flow of fuel vapor to the EVAP canister.
During refueling, the fuel tank vapor control valve opens with the pressure in the fuel tank, and feeds the fuel vapor to
the EVAP canister.ProCarManuals.com
Page 246 of 1954

Glossary
The following is a glossary of terms pertaining to the Voice Recognition Navigation System.
Item
Breadcrumbs
CPU
Database
DCA
DTC
Dead Reckoning
Digitized Road
Disclaimer Screen
DVD or DVD-ROM
ECM
FAQ
GA-Net bus
GPS
HDS
H/U
Initialization
LCD
Map Matching
Mic
Definition
Off road tracking dots that can be followed on the map to retrace your route back to a
mapped (digitized) road. This function can be turned on/off in Setup screen 1.
Central Processing Unit. The main device within the navigation unit that coordinates the
rest of the electronic functions.
This consists of the Map data, and the POI (Points Of Interest) data stored on the DVD.
Detailed Coverage Area. Main metropolitan areas in the Lower 48 states, and Canada are
mapped to this level. See the Navigation Owner's manual for a list of these areas.
Diagnostic Trouble Codes. Use the HDS tablet to obtain, and troubleshoot the cause of
these codes.
The use of the speed signal, and yaw rate sensor to position the vehicle on the map even
when the GPS signal is obscured by tall buildings, or while driving in a tunnel.
A road that appears on the navigation screen. The road name will appear at the bottom of
the navigation screen. If the user drives "off road" the navigation system will display
"Not on a digitized road", and if 1/2 mile, then "breadcrumbs" will appear.
Screen containing cautionary information. It is meant to read carefully and acknowledged
by the customer when using the navigation system.
Digital Versatile Disk. The navigation program and database resides on this disk. See the
Navigation Owner's Manual for information on how to order a replacement or update
DVD.
Engine Control Module. Typically referred to as the PCM
Frequency Asked Question. See the Navigation Owner's Manual for a list of the customer
FAQs, and troubleshooting information
Proprietary communication bus. This serial bus connects the audio unit, navigation unit,
display unit, and XM receiver. Signals passed on this bus include audio muting requests,
navigation and display unit buttons, control commands, and XM control sequences.
Global Positioning System. A network of 24 satellites in orbit around the earth. The navi-
gation system can simultaneously receive signals from up to 12 satellites to accurately
positioning the vehicle on the map.
Honda Diagnostic System. A hand held tablet PC for use in diagnosing vehicle problems.
This device can be used to obtain DTC codes for diagnosis of navigation system CAN
related problems.
Head Unit. The navigation system display unit assembly in the dash.
This refers to the period needed to re-acquire the GPS satellite orbital information when-
ever the navigation system power has been disconnected. This can take from 10 to 45
minutes.
Liquid Crystal Display (the navigation screen)
The received GPS information allows the navigation system to position the vehicle on the
map. Map matching has occurred if the map screen is displaying the current street name
in the bottom-shaded area.
Abbreviation for the microphone used for receiving voice commands. It is located near
the map light in the ceiling
(cont'd)ProCarManuals.com
Page 263 of 1954

Navigation Syste m
Sympto m Troubleshootin g (cont'd )
Vehicle ico n spin s whe n parke d
Diagnosti c Test : Ya w Rat e
NOTE : Perfor m thi s diagnosti c whe n th e vehicl e i s cold .
1 . G o int o th e Diagnosti c Mod e an d us e th e "Ya w Rate "
diagnosti c (se e pag e 23-47 ).
Are the values correct?
YES—Th e syste m is OK .
NO—Replac e th e navigatio n uni t
(se e pag e 23-53 ).
Navigatio n drive s b y itsel f whe n parke d
Diagnosti c Test : Functiona l Setu p
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , ge t th e navigatio n syste m
anti-thef t codes .
• Afte r troubleshooting , re-ente r th e anti-thef t code ,
an d re-initializ e th e navigatio n system .
1 . Star t th e engine .
2 . Fro m th e mai n menu , selec t places , the n selec t
an y destination , an d begi n th e trip .
3 . Wit h th e vehicl e parked , watc h th e vehicl e ico n o n
th e display .
Doe s the vehicle position icon move by itself?
YES—G o to ste p 4 .
NO—Th e syste m is O K a t thi s time .
4 . G o int o th e Diagnosti c mode , selec t "Functiona l
Setup" , the n selec t "Demonstration" .
Is "Demonstration Mode" set to "Yes"?
YES—Se t th e Demonstratio n mod e t o "NO" .
NO—Replac e th e navigatio n uni t
(see pag e 23-54 ).
23-3 8ProCarManuals.com
Page 280 of 1954
Chassis and Paint Codes
1996 Model
Vehicle Identification Number
Transmission Number
Engine Number
Vehicle Identification Number
and Federal Motor Vehicle
Safety Standard Certification.
Vehicle Identification Number
and Canadian Motor Vehicle
Safety Standard Certification.
COLOR LABEL
INT. COLOR
TYPE F
EXT. COLOR
G-79P
KA SZ3 A3 C
Paint Code
Paint Code
Paint Code
Color
G-79P
G-83P
NH-585P
NH-592P
RP-25P
YR-508M
YR-511P
Juniper Green Pearl
Eucalyptus Green Pearl
Cayman White Pearl
Flamenco Black Pearl
Black Currant Pearl
Heather Mist Metallic
Devon Slate PearlProCarManuals.com
Page 281 of 1954
1997 Model
Vehicle Identification Number
Transmission Number
Paint Code
Paint Code
B-75M
G-79P
G-83P
NH-585P
NH-592P
RP-25P
YR-508M
YR-511P
Color
Crescent Silver Metallic*2
Juniper Green Pearl
Eucalyptus Green Pearl*1
Cayman White Pearl
Flamenco Black Pearl
Black Currant Pearl*1
Heather Mist Metallic
Devon Slate Pearl*1
Engine Number
Vehicle Identification Number
and Federal Motor Vehicle
Safety Standard Certification.
Vehicle Identification Number
and Canadian Motor Vehicle
Safety Standard Certification.
COLOR LABEL
INT. COLOR
TYPE F
EXT. COLOR
G-79P
KA SZ3 A3 C
Paint CodeProCarManuals.com
Page 282 of 1954
Chassis and Paint Codes
1998 Model
Vehicle Identification Number
U.S. model: 000001-
Canada model: 800001-
Transmission Number
*1: U.S. model only
Engine Number
Vehicle Identification Number
and Federal Motor Vehicle
Safety Standard Certification.
Vehicle Identification Number
and Canadian Motor Vehicle
Safety Standard Certification.
COLOR LABEL
INT. COLOR
TYPE F
EXT. COLOR
G-79P
KA SZ3 A3 C
Paint Code
Paint Code
Paint Code
Color
Crystal Silver Metallic
Juniper Green Pearl*1
Cayman White Pearl
Flamenco Black Pearl
Athlete Gray Metallic*1
Ruby Red Pearl*1
Heather Mist Metallic
B-91M
G-79P
NH-585P
NH-592P
NH-611M
R-504P
YR-508MProCarManuals.com