2006 ACURA CSX heating

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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)
08/08/21 14:05:21 61SNR030_000_0002
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Number Maintenance Sub Items
3-8
Maintenance Minder
Maintenance Sub Items
1 Rotate tires, and check tire inflation and condition.
Follow the pattern shown in the Owner’s Manual.


2 Replace air cleaner element (see page 11-346).
Replace every 15,000 miles (24,000 km) if the vehicle is driven in dusty conditions.
Replace dust and pollen filter (see page 21-75). If the vehicle is driven mostly in urban areas that have high concentrations of dust, pollen, or soot in
the air, replace every 15,000 miles (24,000 km).
Replace the filter whenever airflow from the heating and air c onditioning system is less than normal.
Inspect drive belt (see page 4-30). Look for cracks and damage, then check the position of the drive belt auto-tensioner indicator.
3 Replace automatic transmission fluid (see page 14-232). Capacity:2.9L(3.1USqt);useAcuraATF-Z1.
Replace manual transmission fluid. 5M/T (see page 13-5), 6M/T (see page 13-82)
Capacity:1.5L(1.6USqt);useAcuraMTF.




4 Replace spark plugs (see page 4-21).
K20Z2: Use SKJ20DR-M11 (DENSO).
K20Z3: Use SK22PR-M11S (DENSO).
Inspect valve clearance (cold). K20Z2 (see page 6-12)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.28 0.32 mm (0.011 0.013 in.)
K20Z3 (see page 6-14)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.25 0.29 mm (0.010 0.011 in.)


5 Replace engine coolant (see page 10-8).
Capacity (including the reservoir):
K20Z2: M/T 4.3 L (1.14 US gal), A/T 4.2 L (1.11 US gal)
K20Z3: 4.5 L (1.19 US gal)
Use Honda Long Life Antifreeze/Coolant Type 2.
08/08/21 14:08:32 61SNR030_030_0008
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Special Tools Required
14-310
Torque Converter Housing
Secondary Shaft Bearing Replacement
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
A
B
B A C
B
A
07749-001000007746-0010500
 Driver 07749-0010000
 Attachment, 62 x 68 mm 07746-0010500 1. Remove the set plate bolt, then remove the lock washer (A) and the bearing set plate (B).
2. Remove the secondary shaft bearing (A) by heating the housing to about 100 °C (212 °F) using a heat
gun (B). Do not heat the housing more than 100 °C
(212 °F).
NOTE: Let the housing cool to normal temperature
before installing the bearing. 3. Install new O-rings (A) on the ATF guide collar (B),
then install the ATF guide collar in the housing.
4. Install new secondary shaft bearing (C) in the direction shown.
5. Install the secondary shaft bearing using the driver and the 62 x 68 mm attachment, and install it
securely in the housing.
6. Check that the bearing groove aligns with the housing surface, then install the bearing set plate
while aligning the bearing groove.
7. Install a new lock washer and the set plate bolt, then bend the lock tab of the lock washer against
the bolt head.
Replace.
08/08/21 14:51:17 61SNR030_140_0312
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Special Tools Required
’06 Model ’07-09 Models
14-359
Carrier Bearing Outer Race Replacement
A B C
D E
A
D E
B C
A
B
C
 Driver 07749-0010000
 Attachment, 78 x 80 mm 07NAD-PX40100
 Attachment, 72 x 75 mm 07746-0010600
NOTE: Replace the bearing with a new one whenever the outer race is replaced. The bearing and the bearing
outer race should be replaced as a set.
 Do not use the thrust shim on the torque converter housing.
 Adjust the bearing preload (see page 14-361) after replacing the carrier bearing and the carrier bearing
outer race.
 Coat all parts with ATF during installation.
1. Remove the bearing outer race (A), the 76.2 mm thrust washer (B), and the 76 mm thrust shim (C)
from the transmission housing (D) by heating the
housing to about 100 °C (212 °F) with a heat gun (E).
Do not heat the housing more than 100 °C (212 °F).
2. Remove the bearing outer race (A) and the 80 mmthrust washer (B) from the torque converter
housing (C) by hand.
(cont’d)
08/08/21 14:53:03 61SNR030_140_0361
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") Special Tools Required ’06 Model
14-36114-361
Carrier Bearing Preload Inspection
A B
C 07749-0010000
07NAD-PX40100 A B C
D E
5. Install the 80 mm thrust washer (A) and the carrier
bearing outer race (B) in the torque converter
housing (C).
6. Install the carrier bearing outer race securely in the torque converter housing so there is no clearance
between the carrier bearing outer race, the 80 mm
thrust washer, and the torque converter housing
using the driver and the 78 x 80 mm attachment.  Driver 07749-0010000
 Attachment, 72 x 75 mm 07746-0010600
 Preload inspection tool 07HAJ-PK40201
NOTE:
 Replace the carrier bearing with a new one whenever the carrier bearing outer race is replaced. The carrier
bearing and the carrier bearing outer race should be
replaced as a set.
 Do not use the 76 mm thrust shim on the torque converter housing.
 Adjust the carrier bearing preload, when replacing the transmission housing, the torque converter
housing, the differential carrier, the carrier bearing,
the carrier bearing outer race, or the 76 mm thrust
shim.
1. Remove the carrier bearing outer race (A), the 76.2 mm thrust washer (B), and the 76 mm thrust
shim (C) from the transmission housing (D) by
heating the housing to about 100 °C (212 °F) with a
heat gun (E). Do not heat the housing more than
100 °C (212 °F).
(cont’d)
08/08/21 14:53:05 61SNR030_140_0363
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") Special Tools Required ’06 Model
14-36114-361
Carrier Bearing Preload Inspection
A B
C 07749-0010000
07NAD-PX40100 A B C
D E
5. Install the 80 mm thrust washer (A) and the carrier
bearing outer race (B) in the torque converter
housing (C).
6. Install the carrier bearing outer race securely in the torque converter housing so there is no clearance
between the carrier bearing outer race, the 80 mm
thrust washer, and the torque converter housing
using the driver and the 78 x 80 mm attachment.  Driver 07749-0010000
 Attachment, 72 x 75 mm 07746-0010600
 Preload inspection tool 07HAJ-PK40201
NOTE:
 Replace the carrier bearing with a new one whenever the carrier bearing outer race is replaced. The carrier
bearing and the carrier bearing outer race should be
replaced as a set.
 Do not use the 76 mm thrust shim on the torque converter housing.
 Adjust the carrier bearing preload, when replacing the transmission housing, the torque converter
housing, the differential carrier, the carrier bearing,
the carrier bearing outer race, or the 76 mm thrust
shim.
1. Remove the carrier bearing outer race (A), the 76.2 mm thrust washer (B), and the 76 mm thrust
shim (C) from the transmission housing (D) by
heating the housing to about 100 °C (212 °F) with a
heat gun (E). Do not heat the housing more than
100 °C (212 °F).
(cont’d)
08/08/21 14:53:05 61SNR030_140_0363
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HVAC (Heating, Ventilation, andAir Conditioning)
Climate Control
HVAC (Heating, Ventilation, and Air Conditioning)
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Special Tools . 21-2
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Component Location Index . 21-3
A/C Service
Tips and Precautions . 21-6
A/C System Inspection . 21-6
A/C Refrigerant Oil Replacement . 21-7
A/C Line Replacement . 21-8
General Troubleshooting Information . 21-9
DTC Troubleshooting Index . 21-15
Symptom Troubleshooting Index . 21-16
System Description . 21-19
Circuit Diagram . 21-26
DTC Troubleshooting . 21-28
Climate Control Power and Ground Circuit
Troubleshooting . 21-53
Navigation Communication Line Circuit
Troubleshooting . 21-54
Radiator and A/C Condenser Fan Low Speed Circuit
Troubleshooting . 21-56
A/C Condenser Fan High Speed Circuit Troubleshooting . 21-60
A/C Compressor Clutch Circuit Troubleshooting . 21-62
A/C Signal Circuit Troubleshooting . 21-64
In-car Temperature Sensor Test . 21-67
In-car Temperature Sensor Replacement . 21-67
Outside Air Temperature Sensor Test . 21-68
Outside Air Temperature Sensor Replacement . 21-68
Sunlight Sensor Test . 21-69
Sunlight Sensor Replacement . 21-69
Evaporator Temperature Sensor Test . 21-70 ............
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Power Transistor Test . 21-71
Air Mix Control Motor Test . 21-72
Air Mix Control Motor
Replacement . 21-72
Mode Control Motor Test . 21-73
Mode Control Motor Replacement . 21-73
Recirculation Control Motor Test . 21-74
Recirculation Control Motor Replacement . 21-74
Climate Control Unit Removal/Installation . 21-75
Dust and Pollen Filter Replacement . 21-75
Blower Unit Removal/Installation . 21-76
Blower Unit Component Replacement . 21-77
Evaporator Core Replacement . 21-78
Expansion Valve Replacement . 21-80
Heater Unit/Core Replacement . 21-81
A/C Compressor Replacement . 21-83
A/C Compressor Clutch Check . 21-85
A/C Compressor Clutch Overhaul . 21-86
A/C Compressor Thermal Protector
Replacement . 21-87
A/C Compressor Relief Valve Replacement . 21-87
A/C Condenser Replacement . 21-88
Receiver/Dryer Desiccant Replacement . 21-89
Refrigerant Recovery . 21-90
System Evacuation . 21-91
System Charging . 21-92
Refrigerant Leak Check . 21-93
A/C System Noise Check . 21-97
A/C System Test . 21-99
08/08/21 14:40:45 61SNR030_210_0002
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%)Ref. No. Tool Number Description Qty
21-2
HVAC (Heating, Ventilation, and Air Conditioning)
Special Tools
07SAZ-001000A
Backprobe Set 2
08/08/21 14:40:45 61SNR030_210_0003
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