2007 HONDA RIDGELINE catalytic converter

This meter shows the number of
miles (U.S.) or kilometers (Canada)
driven since you last reset it.
There are two trip meters: TRIP A
and TRIP B. Switch between these
displays by pressing the SELECT
button repeatedly. Each trip meter
works independently, so you can
keep track of two dif f erent distances.To reset a trip meter, display it, and
then press and hold the RESET
button until the number resets to
‘‘0.0’’. Both trip meters will reset if
the vehicle’s battery goes dead or is
disconnected. And both continue to
track mileage, even when only one is
displayed. When you turn the ignition switch to
the ON (II) position, the meter you
last selected is displayed.
This shows how much f uel you have.
It may show slightly more or less
than the actual amount. The needle
returns to the bottom after you turn
of f the ignition.
Trip Meter Fuel Gauge
Gauges
Inst rument s and Cont rols
71
SELECT BUTTON
RESET BUTTON
Avoid driving with an extremely low
f uel level. Running out of f uel could
cause the engine to misf ire, damaging
the catalytic converter.

Make sure the moonroof (if
equipped) and the windows are
closed.
Turn of f the lights.
Place any packages, valuables, etc.
in the cargo area in your vehicle or
the In-Bed Trunk, or take them
with you.
Lock the doors.
Check the indicator on the driver’s
door to verify that the security
system is set.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
Set the parking brake bef ore you put
the transmission in Park. This keeps
the vehicle from moving and putting
pressure on the parking mechanism
in the transmission. Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly, or
your vehicle may roll if it is parked
on an incline.
On vehicles with security system
As required by the FCC:
This device complies with Part 15 of theFCC rules. Operation is subject to thef ollowing two conditions: (1) This devicemay not cause harmf ul interf erence, and(2) this device must accept anyinterf erence received, includinginterf erence that may cause undesiredoperation.
Changes or modif ications not expresslyapproved by the party responsible f orcompliance could void the user’sauthority to operate the equipment.
This device complies with IndustryCanada Standard RSS-210.Operation is subject to the f ollowing twoconditions: (1) this device may not causeinterf erence, and (2) this device mustaccept any interf erence that may causeundesired operation of the device.
Parking T ips
Parking
Tire Pressure Monitoring System (TPMS), Parking
206

Thediagramsinthissectiongive
you the dimensions and capacities of
your vehicle and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.................
Identif ication Numbers .300
................................
Specif ications .302
DOT Tire Quality Grading
......................
(U.S. Vehicles) .304
Unif orm Tire Quality ..................................
Grading .304
.................................
Treadwear .304
......................................
Traction .304
.............................
Temperature .305
.................................
Tire Labeling .306 .......................
Emissions Controls . 307
.....................
The Clean Air Act .307
Crankcase Emissions Control
....................................
System .307
Evaporative Emissions Control ....................................
System .307
Onboard Ref ueling Vapor ................................
Recovery .307
...
Exhaust Emissions Controls .308
....................
PGM-FI System .308
Ignition Timing Control
................................
System .308
Exhaust Gas Recirculation ...................
(EGR) System .308
Three Way Catalytic ...........................
Converter .308
....................
Replacement Parts .308
..
Three Way Catalytic Converter .309
..............
State Emissions Testing .310
T echnical Inf ormation
Technical Inf ormation
299

The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI system uses sequential
multiport f uel injection.
It has three subsystems: air intake,
engine control, and f uel control. The
powertrain control module (PCM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
f uel to inject under all operating
conditions.This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manif old. Adding exhaust gas to the
air/f uel mixture reduces the amount
of NOx produced when the f uel is
burned.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), nitrogen
(N ), and water vapor.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion. The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
2
2
Emissions Cont rols
Exhaust Emissions Controls Replacement Parts
PGM-FI SystemIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
308

The three way catalytic converter
must operate at a high temperature
for the chemical reactions to take
place. It can set on f ire any
combustible materials that come
near it. Park your vehicle away from
high grass, dry leaves, or other
f lammables.A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your vehicle’s three way
catalytic converter.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective. Keep the engine well maintained.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Honda part
or its equivalent.
Three Way Catalytic Converter
Technical Inf ormation
309
THREE WAY CATALYTIC CONVERTER
WARM UP THREE WAY CATALYTIC
CONVERTERS

Î
.....................................
Tachometer .70
Tailgate, Dual-Action
.................................
Indicator . 64, 94
.....................................
Operation .92
......
Taillights, Changing Bulbs in .257
.
Taking Care of the Unexpected .273
Technical Descriptions
....
DOT Tire Quality Grading .304
.....
Emissions Control Systems .307
Three Way Catalytic
...............................
Converter .309
.......................
Temperature Gauge .72
...................
Tensioners, Seat Belts .19
............................
Thef t Protection .162
..
Three Way Catalytic Converter .309
....................................
Timing Belt .254
....................................
Tire Chains .269
.........
Tire, How to Change a Flat .275
.................................
Tire Labeling .306
Tire Pressure Monitoring
....................
System (TPMS) .204
Low Tire Pressure ...........................
Indicator . 68, 204
Shif ting the Automatic
.............................
Transmission .197
...
Shif t Lever Position Indicators .197
........................
Shif t Lock Release .202
....................................
Side Airbags .26
......................
Side Curtain Airbags .28
Side Marker (Parking)
...
Lights, Bulb Replacement in .256
...............................
Signaling Turns .76
.....................................
Snow Tires .269
................
Sound System . 133, 142, 148
Spare Tire ..............................
Inflating . 265, 274
....................
Specific ations . 269, 303
....................
Specif ications Charts .302
................................
Speed Control .165
...................................
Speedometer .70
..........
SRS, Additional Inf ormation .21
...
Additional Safety Precautions .31
......
Airbag System Components .21
.............................
Airbag Service .30
How the Passenger Airbag Of f
......................
Indicator Works .29
How the Side Airbag Of f ......................
Indicator Works .29
..
How the SRS Indicator Works .28 How Your Front Airbags
.........................................
Work .23
...
How Your Side Airbags Work .26
How Your Side Curtain Airbags
.........................................
Work .28
.............................
SRS Indicator . 28, 62
....
START (Ignition Key Position) .82
.......................
Starting the Engine .196
................
With a Dead Battery .284
..............
State Emissions Testing .310
........
Steam Coming f rom Engine .286
Steering Wheel
..................................
Adjustment .79
.............
Anti-theft Column Lock .82
...
Stereo Sound System . 133, 142, 148
....................
Storing Your Vehicle .272
................................
Stuck Vehicle .297
........................................
Sun Visor .117
........................
Sunglasses Holder .115
Supplemental Restraint System
(SRS) ......................................
Servicing .30
.........................
SRS Indicator . 28, 62
...................
System Components .21
..................................
Synthetic Oil .247
Index
T
VIII