2006 ACURA CSX catalytic converter

(#')Symbol Maintenance Main Items
3-7
Maintenance Main Items
If the message ‘‘SERVICE’’ does not appear more than 12 months after the display is reset, change the engine oil every
year.
NOTE:


 Replace the brake fluid every 3 years independent of the maintenance messages in the information display.
Inspect idle speed every 160,000 miles (256,000 km).
Adjust the valves during services A, B, 1, 2 or 3, only if they are noisy.

















A Replace engine oil (see page 8-10).
Engine oil capacity without oil filter:
K20Z2: 4.0 L (4.2 US qt)
K20Z3: 4.2 L (4.4 US qt)
B Replace engine oil and oil filter (see page 8-11). Engine oil capacity with oil filter:
K20Z2: 4.2 L (4.4 US qt)
K20Z3: 4.4 L (4.6 US qt)
Check front and rear brakes (see page 19-3). Check pad and disc for wear (thickness), damage, and cracks.
Check calipers for damage, leaks, and tightness of mounting bolts.
Check parking brake adjustment (see page 19-7). Check the number of clicks (8 to 10) when the parking brake lever is pulled with 196 N (20 kgf,
44 lbf) of force.
Inspect tie-rod ends, steering gearbox, and gearbox boots (see page 17-5). Check steering linkage.
Check boots for damage and leaking grease.
Check fluid lines for damage and leaks.
Inspect suspension components (see page 18-3). Check bolts for tightness.
Check condition of ball joint boots for deterioration and damage.
Inspect driveshaft boots (see page 16-4). Check boots for cracks and boot bands for tightness.
Inspect brake hoses and lines including VSA lines (see page 19-37). Check the master cylinder and VSA modulator-control unit for damage or leakage.
Inspect all fluid levels and condition of fluids. Engine coolant (see page 10-7)
Automatic transmission fluid (ATF-Z1) (see page 14-231)
Manual transmission fluid (MTF)
5M/T (see page 13-5), 6M/T (see page 13-82)
Clutch fluid (see page 12-7)
Brake fluid (see page 19-9)
Windshield washer fluid (see page 22-234)
Inspect exhaust system: K20Z2 (see page 9-13), K20Z3 (see page 9-14)
Check catalytic converter heat shields, exhaust pipes, and muffler for damage, leaks, and tightness.
Inspect fuel lines (see page 11-326) and connections (see page 11-328). Check for loose connections, cra cks, and deterioration; retighten loose connections and replace
damaged parts.
NOTE: According to state and federal regulations, failure to do the maintenance items marked with an asterisk ( ) will
not void the client’s emissions warranties. However, Acura recommends that all maintenance services be done at the
recommended interval, to ensure long-term reliability.
08/08/21 14:08:32 61SNR030_030_0007
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DYNOMITE -2009-






5-6Engine Assembly
Engine Removal (cont’d)
C
B
D
A B
C
A
D
D A
B
C
27. Drain the engine oil (see page 8-10).
28. Drain the transmission fluid: Manual transmission (see step 3 on page 13-5)
 Automatic transmission (see step 3 on page14-232)
29. Disconnect the air fuel ratio (A/F) sensor connector (A).
30. Remove the grommet (B), then disconnect the secondary heated oxygen sensor (secondary
HO2S) connector (C).
31. Remove the three way catalytic converter (TWC) (D).
32. A/T model: Remove the shift cable. Do not bend the cables excessively (see step 39 on page 14-239).
33. Separate the stabilizer links (see page 18-25).
34. Separate the knuckles from the lower arms (see step 6 on page 18-21).
35. Remove the driveshafts (see page 16-4). Coat all precision-finished surfaces with new engine oil. Tie
plastic bags over the driveshaft ends. 36. Remove the steering gearbox bracket (A).
37. Remove the steering gearbox mounting bolt (B),
the stiffener mounting bolt (C), and the stiffener (D).
38. Remove the steering gearbox mounting bolt (A), the stiffener mounting bolt (B), and the stiffener (C).
39. Remove the harness clamp (D) from the subframe.
08/08/21 14:20:24 61SNR030_050_0006
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5-20Engine Assembly
Engine Installation (cont’d)
D
A
B
10x1.25mm
59 N·m
(6.0 kgf·m, 43 lbf·ft)
C
10x1.25mm
54 N·m
(5.5 kgf·m, 40 lbf·ft)
A
B
C
10x1.25mm
59 N·m
(6.0 kgf·m, 43 lbf·ft)
D
10x1.25mm
54 N·m
(5.5 kgf·m, 40 lbf·ft)
10x1.25mm
38 N·m
(3.9 kgf·m, 28 lbf·ft)
E
F
A
D
B
B
C
10x1.25mm
33 N·m (3.4 kgf·m, 25 lbf·ft)
8x1.25mm
22 N·m (2.2 kgf·m, 16 lbf·ft)
29. Install the stiffener (A), then tighten the steering gearbox mounting bolt (B) and the stiffener
mounting bolt (C).
30. Install the harness clamp (D) to the subframe.
31. Install the steering gearbox bracket (A).
32. Install the stiffener (B), then tighten the steering gearbox mounting bolt (C) and the stiffener
mounting bolt (D).
33. A/T model: Install the shift cable (see step 19 on page 14-245).
34. Install a new set ring on the end of each driveshaft, then install the driveshafts (see page 16-20). Make
sure each ring ‘‘clicks’’ into place in the differential
and the intermediate shaft. 35. Connect the lower arms to the knuckles (see step 9
on page 18-16).
36. Connect the stab ilizer links (see page 18-25).
37. Install the three way catalytic converter (TWC) (A). Use the new gaskets (B) and the new self-locking
nuts (C).
38. Connect the air fuel ratio (A/F) sensor connector (D).
39. Connect the secondary heated oxygen sensor (secondary HO2S) connector (E), then install the
grommet (F).
40. Install the splash shield.
Replace.
Replace.
Replace.
08/08/21 14:20:34 61SNR030_050_0020
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DYNOMITE -2009-

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 )
K20Z2 engine
9-13
Exhaust Pipe and Muffler Replacement
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft) 8x1.25mm
22 N·m (2.2 kgf·m, 16 lbf·ft)
HEAT SHIELD
GASKET MUFFLER
EXHAUST PIPE B
SELF-LOCKING NUTS
10x1.25mm
33N·m(3.4kgf·m,25lbf·ft) GASKET
GASKET THREE WAY CATALYTIC CONVERTER
(TWC) ASSEMBLY
SECONDARY HEATED
OXYGEN SENSOR
(SECONDARY HO2S)
44N·m(4.5kgf·m,33lbf·ft)
AIR FUEL RATIO (A/F) SENSOR
44 N·m (4.5 kgf·m, 33 lbf·ft) 8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
NOTE: Use new gaskets and self-locking nuts when reassembling.
Tighten the bolts in steps,
alternating side-to-side.
Replace.
Replace. Replace.
Replace. Tighten the bolts in steps,
alternating side-to-side.
08/08/21 14:37:38 61SNR030_090_0013
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DYNOMITE -2009-

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K20Z3 engine
9-14Intake Manifold and Exhaust System
Exhaust Pipe and Muffler Replacement (cont’d)
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
8x1.25mm
22 N·m (2.2 kgf·m, 16 lbf·ft)
HEAT SHIELD
GASKET MUFFLER
EXHAUST PIPE B
SELF-LOCKING NUTS
10x1.25mm
33 N·m
(3.4 kgf·m, 25 lbf·ft)
GASKET
THREE WAY CATALYTIC CONVERTER
(TWC) ASSEMBLY
SECONDARY HEATED
OXYGEN SENSOR
(SECONDARY HO2S)
44 N·m (4.5 kgf·m, 33 lbf·ft)
AIR FUEL RATIO (A/F) SENSOR
44 N·m (4.5 kgf·m, 33 lbf·ft) GASKET
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
NOTE: Use new gaskets and self-locking nuts when reassembling.
Tighten the bolts in steps,
alternating side-to-side.
Tighten the bolts in steps,
alternating side-to-side.
Replace.
Replace.
Replace.
Replace.
08/08/21 14:37:39 61SNR030_090_0014
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/)
Fuel and Emissions
Fuel and Emissions Systems
PGM-FI System
Electronic Throttle Control System
VTEC/VTC
Idle Control SystemFuel Supply System
Intake Air System
Catalytic Converter System
EGR System
PCV System
EVAP System..................................................
........
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Special Tools . 11-2
General Troubleshooting Information . 11-3
DTC Troubleshooting Index . 11-9
Symptom Troubleshooting Index . 11-13
System Description . 11-15
How to Set Readiness Codes . 11-69
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Component Location Index . 11-72
DTC Troubleshooting . 11-74
F-CAN Circuit Troubleshooting . 11-191
MIL Circuit Troubleshooting . 11-203
DLC Circuit Troubleshooting . 11-204
Injector Replacement . 11-219
A/F Sensor Replacement . 11-221
Secondary HO2S Replacement . 11-221
CMP Sensor B Replacement . 11-222
CKP Sensor Replacement . 11-222
Output Shaft (Countershaft) Speed Sensor
Replacement . 11-223
Knock Sensor Replacement . 11-223
MAP Sensor Replacement . 11-224
MAF Sensor/IAT Sensor Replacement . 11-224
ECT Sensor 1 Replacement . 11-225
ECT Sensor 2 Replacement . 11-225
ELD Replacement . 11-226
ECM/PCM Update . 11-227
ECM/PCM Replacement . 11-228
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.................................... ......................
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Component Location Index . 11-231
DTC Troubleshooting . 11-232
APP Sensor Signal Inspection . 11-268
Accelerator Pedal Module
Removal/Installation . 11-269
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Component Location Index
. 11-273
DTC Troubleshooting . 11-274
VTC Oil Control Solenoid Valve Removal/Test/Installation . 11-294
CMP Sensor A Replacement . 11-295
Rocker Arm Oil Control Valve Removal/Installation . 11-296
Rocker Arm Oil Pressure Switch Removal/Installation . 11-296
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Component Location Index
. 11-297
DTC Troubleshooting . 11-298
A/C Signal Circuit Troubleshooting . 11-306
Alternator FR Signal Circuit Troubleshooting . 11-307
Brake Pedal Position Switch Signal Circuit Troubleshooting . 11-308
Idle Speed Inspection . 11-309
ECM/PCM Idle Learn Procedure . 11-310 ..........................
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Component Location Index
. 11-311
DTC Troubleshooting . 11-313
Fuel Pump Circuit Troubleshooting . 11-318
Fuel Pressure Relieving . 11-322
Fuel Pressure Test . 11-325
Fuel Tank Draining . 11-325
Fuel Line Inspection . 11-326
Fuel Line/Quick-Connect Fitting Precautions . 11-328
Fuel Line/Quick-Connect Fitting Removal . 11-329
Fuel Line/Quick-Connect Fitting Installation . 11-331
Fuel Tank Unit Removal and Installation . 11-334
Fuel Pressure Regulator Replacement . 11-337
Fuel Filter Replacement . 11-337
Fuel Pump/Fuel Gauge Sending Unit Replacement . 11-338
Fuel Tank Replacement . 11-339
Fuel Gauge Sending Unit Test . 11-340
Low Fuel Indicator Test . 11-341
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............. ....
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............. ....
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Component Location Index
. 11-342
Throttle Body Test . 11-343
Throttle Body Cleaning . 11-344
Intake Air Bypass Control Thermal Valve Test . 11-344
Air Cleaner Removal/Installation . 11-345
Air Cleaner Element Inspection/Replacement . 11-346
Intake Air Resonator Removal/Installation . 11-346
Throttle Body Removal/Installation . 11-348
Throttle Body Disassembly/Reassembly . 11-350
Intake Air Bypass Control Thermal Valve Replacement . 11-351
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.................................... ...
Component Location Index
. 11-352
DTC Troubleshooting . 11-353
Catalytic Converter Removal/Installation . 11-355
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Component Location Index
. 11-356
DTC Troubleshooting . 11-357
EGR Valve Replacement . 11-370
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Component Location Index
. 11-371
PCV Valve Inspection . 11-372
PCV Valve Replacement . 11-373
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Component Location Index
. 11-374
DTC Troubleshooting . 11-375
Fuel Cap Warning Message System Troubleshooting . 11-405
EVAP Canister Replacement . 11-407
FTP Sensor Replacement . 11-408
EVAP Canister Vent Shut Valve Replacement . 11-409
EVAP Canister Purge Valve Replacement . 11-409
08/08/21 14:12:30 61SNR030_110_0001
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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)
08/08/21 14:12:41 61SNR030_110_0023
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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
08/08/21 14:12:42 61SNR030_110_0024
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