2006 ACURA CSX ventilation

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INTRODUCTION
How to Use This Manual
Safety Messages
Safety Labels
Safety Messages
Instructions
HONDA MOTOR CO., LTD.
Service Publication Office
As sections with * include SRS components;
special precautions are required when servicing.
This manual is divided into multiple sections. The first page of
each section is marked with a black tab that lines up with its
corresponding thumb index tab on this page and the back cover.
You can quickly find the first page of each section without
looking through a full table of contents. The symbols printed at
the top corner of each page can also be used as a quick
reference system.
Each section includes: 1. A table of contents, or an exploded view index showing:  Parts disassembly sequence.
 Bolt torques and thread sizes.
 Page references to descriptions in text.
2. Disassembly/assembly procedures and tools.
3. Inspection.
4. Testing/troubleshooting.
5. Repair.
6. Adjustments.
Your safety, and the safety of others, is very important. To help
you make informed decisions, we have provided safety
messages, and other safety information throughout this manual.
Of course, it is not practical or possible to warn you about all the
hazards associated with servicing this vehicle. You must use
your own good judgment.
You will find important safety information in a variety of forms
including:  on the vehicle.
 preceded by a safety alert symbol and one of three signal words, DANGER, WARNING, or CAUTION.
These signal words mean:
You WILL be KILLED or SERIOUSLY HURT if
you don’t follow instructions.
You CAN be KILLED or SERIOUSLY HURT if
you don’t follow instructions.
You CAN be HURT if you don’t follow
instructions.
 how to service this vehicle correctly and safely.
All information contained in this manual is based on the latest
product information available at the time of printing. We reserve
the right to make changes at anytime without notice. No part of
this publication may be reproduced, or stored in a retrieval
system, or transmitted, in any form by any means, electronic,
mechanical, photocopying, recording, or otherwise, without the
prior written permission of the publisher. This includes text,
figures, and tables.
As you read this manual, you will find information that is
preceded by a symbol. The purpose of this message is
to help prevent damage to your vehicle, other property, or the
environment.
First Edition 10/2008
All Rights Reserved
Specifications apply to Canada
Specifications Maintenance
*Engine Electrical
Fuel and Emissions
*Transaxle
*Steering
*Body
*Body Electrical
*Restraints *Audio, Navigation,
and Telematics
General Information
Engine Mechanical
Engine Cooling
Brakes
(Including VSA)
*Heating, Ventilation, and Air ConditioningSuspension
(Including TPMS)
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6-39
A
B
A B B
A
A B
8. Remove the quick-connect fitting cover (A), then
disconnect the fuel feed hose (B) (see page 11- 329).
9. Disconnect the positive crankcase ventilation (PCV) hose (A) (K20Z2 engine) and remove the ground
cable (B). 10. Remove the harness holder (A) from the bracket,
then remove the harness holder bracket (B).
11. Disconnect the upper radiator hose (A) and the heater hoses (B).
(cont’d)
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6-65
A
B6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
B
A A
B
19. Connect the positive crankcase ventilation (PCV)hose (A) (K20Z2 engine) and install the ground
cable (B).
20. Connect the fuel feed hose (A) (see page 11-331), then install the quick-connect fitting cover (B). 21. Connect the evaporative emission (EVAP) canister
hose (A) and the brake booster vacuum hose (B).
22. Install the exhaust manifold (see page 9-11).
23. Install the intake manifold:  K20Z2 engine (see page 9-4)
 K20Z3 engine (see page 9-9)
24. Install the drive belt (see page 4-31).
25. Install the air cleaner assembly (see page 11-345).
26. After installation, check that all tubes, hoses and connectors are installed correctly.
27. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so that the fuel
pump runs for about 2 seconds and pressurizes the
fuel line. Repeat this operation three times, then
check for fuel leakage at any point in the fuel line.
(cont’d)
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Removal - K20Z3 engine
9-7
A
B C A
B
C
A B
C
1. Remove the engine cover.
2. Relieve the fuel pressure (see page 11-322).
3. Disconnect the vacuum hose (A) and the breather
pipe (B), then remove the intake air duct (C). 4. Disconnect the following engine wire harness
connectors, and remove the wire harness clamps
from the intake manifold:
 Four fuel injector connectors
 Manifold absolute pressure (MAP) sensor connector
 Throttle actuator connector
5. Remove the ground cable (A) and the harness clamp bracket (B), then remove the harness holder
(C) from the bracket.
6. Disconnect the positive crankcase ventilation (PCV) hose (A), the evaporative emission (EVAP) canister
hose (B) and the brake booster vacuum hose (C).
(cont’d)
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9-10Intake Manifold and Exhaust System
Intake Manifold Removal and Installation (cont’d)
A
B
C
B
C
A 6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft) B
C A
6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)
8. Connect the positive crankcase ventilation (PCV) hose (A), the evaporative emission (EVAP) canister
hose (B) and the brake booster vacuum hose (C).
9. Install the harness holder (A) to the bracket, then install the ground cable (B) and the harness clamp
bracket (C).
10. Connect the engine wire harness connectors, and install the wire harness clamps to the intake
manifold:
 Four fuel injector connectors
 Manifold absolute pressure (MAP) sensor connector
 Throttle actuator connector 11. Install the intake air duct (A), then connect the
vacuum hose (B) and breather pipe (C).
12. Install the engine cover.
13. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump
runs for about 2 seconds and pressurizes the fuel
line. Repeat this operation three times, then check
for fuel leakage at any point in the fuel line.
14. Clean up any spilled engine coolant.
15. After installation, check that all tubes, hoses and connectors are installed correctly.
16. Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater
valve open (see step 6 on page 10-8).
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10-11
Water Passage Replacement
C D
E B A B
A
1. Drain the engine coolant (see page 10-8).
2. Remove the alternator (see page 4-34).
3. Remove the A/C condenser fan shroud assembly.
4. Remove the A/C compressor without disconnecting
the A/C hoses (see step 40 on page 5-7).
5. Remove the intake manifold:
 K20Z2 engine (see page 9-3)
 K20Z3 engine (see page 9-7)
6. Remove the bolt (A) securing the connecting pipe.
7. Disconnect the lower radiator hose (B), the connecting pipe (C), and the water bypass hose (D),
and remove the harness clamp (E). 8. Disconnect the positive crankcase ventilation (PCV)
hose (A), then remove the water passage (B).
9. Remove the thermostat housing.
10. Remove the water pump:  K20Z2 engine (see page 10-6)
 K20Z3 engine (see page 10-7)
(cont’d)
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Vacuum Distribution
K20Z2 engine
11-23
3ENGINE
COOLANT
9
5 18
4
6
7
8 20
19 2 26
16
15
25
11 13
14
10 21
23
12 ATMOSPHERE
1
ENGINE
COOLANT
24
17ATMOSPHERE
22
MASS AIR FLOW (MAF) SENSOR/
INTAKE AIR TEMPERATURE (IAT) SENSOR
AIR FUEL RATIO (A/F) SENSOR (SENSOR 1)
SECONDARY HEATED OXYGEN SENSOR
(SECONDARY HO2S) (SENSOR 2)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1
CRANKSHAFT POSITION (CKP) SENSOR
KNOCK SENSOR
CAMSHAFT POSITION (CMP) SENSOR B
CAMSHAFT POSITION (CMP) SENSOR A
THROTTLE BODY
INJECTOR
FUEL PRESSURE REGULATOR
FUEL FILTER
FUEL PUMP
FUEL TANK INTAKE AIR RESONATOR
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
THREE WAY CATALYTIC CONVERTER
EVAPORATIVE EMISSION (EVAP) CANISTER EVAPORATIVE EMISSION (EVAP) CANISTER
PURGE VALVE
EVAPORATIVE EMISSION (EVAP) CANISTER
VENT SHUT VALVE
FUEL TANK PRESSURE (FTP) SENSOR
INTAKE AIR BYPASS CONTROL THERMAL VALVE
FUEL TANK VAPOR CONTROL VALVE
AIR CLEANER EXHAUST GAS RECIRCULATION (EGR) VALVE and
POSITION SENSOR
(cont’d)
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Vacuum Distribution (cont’d)
K20Z3 engine
11-24Fuel and Emissions Systems
System Description (cont’d)
3
ENGINE
COOLANT
9
5 17
4
6
7
8 19
18 2 25
16
15
24
11 13
14
10 20
22
12 ATMOSPHERE
1
ENGINE
COOLANT
23 ATMOSPHERE
21
MASS AIR FLOW (MAF) SENSOR/
INTAKE AIR TEMPERATURE (IAT) SENSOR
AIR FUEL RATIO (A/F) SENSOR (SENSOR 1)
SECONDARY HEATED OXYGEN SENSOR
(SECONDARY HO2S) (SENSOR 2)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1
CRANKSHAFT POSITION (CKP) SENSOR
KNOCK SENSOR
CAMSHAFT POSITION (CMP) SENSOR B
CAMSHAFT POSITION (CMP) SENSOR A
THROTTLE BODY
INJECTOR
FUEL PRESSURE REGULATOR
FUEL FILTER
FUEL PUMP
FUEL TANK INTAKE AIR RESONATOR
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
THREE WAY CATALYTIC CONVERTER
EVAPORATIVE EMISSION (EVAP) CANISTER EVAPORATIVE EMISSION (EVAP) CANISTER
PURGE VALVE
EVAPORATIVE EMISSION (EVAP) CANISTER
VENT SHUT VALVE
FUEL TANK PRESSURE (FTP) SENSOR
INTAKE AIR BYPASS CONTROL THERMAL VALVE
FUEL TANK VAPOR CONTROL VALVE AIR CLEANER
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