2006 ACURA CSX fuel filter

(#')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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Symptom Diagnostic procedure Also check for
4-4
Starting System
Symptom Troubleshooting Index


Engine does not start
(does not crank)
1.
2.
3.
4.
5.
6.
7.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter (see page 4-6).
Check the starter cut relay (see page 22-70).
Check the clutch interlock switch (M/T model) (see page
4-8).
Check the transmission range switch (A/T model)
(see page 14-265).
Check the ignition switch or wire (see page 22-72). Poor ground at G101
(A/T model) or G401
(M/T model)
Engine cranks, but does
not start 1.
2.
3.
4.
5.
6.
7.
8.
9.Check for PGM-FI DTCs (see page 11-3).
Check for IMMOBI status and function (see page
22-325).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337).
Check the throttle body (see page 11-
343).
Check for low engine compression (see page 6-7).
Check for a damage or broken cam chain (see page
6-21).
Do the engine control module (ECM)/powertrain control
module (PCM) reset in the PGM-FI INSPECTION menu
to cancel the ALL INJECTORS STOP with the Honda
Diagnostic System (HDS). Empty fuel tank
Weak or fouled spark
plugs
Engine is hard to start 1. 2.
3.
4.Check for PGM-FI DTCs (see page 11-3).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337). Weak or fouled spark
plugs
Engine cranks slowly 1. 2.
3.
4.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter for binding (see page 4-13).
Check for excessive drag in the engine.
08/08/21 14:09:21 61SNR030_040_0005
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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..................................................
........
......................... ................
....................................... .......................
..................................................
........
......................... ................
....................................... .......................
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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......................... ........................
.................................... .............................. ....................
........................
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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
..........................
.................................... ......................
................................. ..........................
.................................... ......................
.................................
Component Location Index . 11-231
DTC Troubleshooting . 11-232
APP Sensor Signal Inspection . 11-268
Accelerator Pedal Module
Removal/Installation . 11-269
..........................
....................................
.................................................
.................................
................................. ..........................
....................................
.................................................
.................................
.................................
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
..........................
.................................... .............
........................................
........................................ .................................... ...................
..........................
.................................... .............
........................................
........................................ .................................... ...................
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 ..........................
.................................... .............
................................
......................................... ........................................ ......................................
.................................................
...................................................... .................................................. ....
........
................................
.............................................. .....................................................
................................. ..........................
.................................... .............
................................
......................................... ........................................ ......................................
.................................................
...................................................... .................................................. ....
........
................................
.............................................. .....................................................
.................................
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
..........................
......................................... .................................
.............................................................. .................
........................... .
............. ....
.............................................. ..........................
......................................... .................................
.............................................................. .................
........................... .
............. ....
..............................................
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
..........................
.................................... ...
..........................
.................................... ...
Component Location Index
. 11-352
DTC Troubleshooting . 11-353
Catalytic Converter Removal/Installation . 11-355
..........................
.................................... .........................................................
.................................... ...............................
Component Location Index
. 11-356
DTC Troubleshooting . 11-357
EGR Valve Replacement . 11-370
..........................
.................................... .........................................................
.................................... ...............................
Component Location Index
. 11-371
PCV Valve Inspection . 11-372
PCV Valve Replacement . 11-373
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....................................
........................................ ........................
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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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DYNOMITE -2009-

Î
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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Î
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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(#' 


)
µ
µ µ
µ µ
µ
YES
NO
YES
NO
YES
NO
DTC P0171:
DTC P0172:
11-11311-113
29. Reconnect all connectors.
30. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
31. Start the engine, and let idle.
32. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the secondary HO2S (Sensor 2) and
the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 31. If the ECM/PCM was substituted,
go to step 1.
Go to step 33.
33. Monitor the OBD STATUS for DTC P0141 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 32, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the secondary
HO2S (Sensor 2) and the ECM/PCM. If the ECM/
PCM was updated, substitute a known-good ECM/
PCM (see page 11-7), then go to step 31. If the ECM/
PCM was substituted, go to step 1. If the screen
indicates NOT COMPLETED, keep idling until a
result comes on. NOTE:
 Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
 If any of the DTCs listed below are indicated at the same time as DTC P0171 and/or P0172, troubleshoot
those DTCs first, then recheck for P0171 and/or P0172.
P0101, P0102, P0103: Mass air flow (MAF) sensor
P0107, P0108, P1128, P1129: Manifold absolute
pressure (MAP) sensor
P0133, P1157, P1172, P2195, P2238, P2252, P2A00: Air
fuel ratio (A/F) sensor (Sensor 1)
P0134, P0135: Air fuel ratio (A/F) sensor (Sensor 1)
heater
P0137, P0138, P0139, P2270, P2271: Sec ondary HO2S
(Sensor 2)
P0141: Secondary HO2S (Sensor 2) heater
P0401 , P0404 , P0406 , P2413 : Exhaust gas
recirculation (EGR) system
P0443, P0496: EVAP canister purge valve
P2646, P2647, P2648, P2649: VTEC system : K20Z2 engine
1. Check the fuel pressure (see page 11-325).
Go to step 2.
 If the pressure is too high, replace the fuel pressure regulator (see page 11-337), then go to
step 7.
 If the pressure is too low, check the fuel pump, the fuel feed pipe and the fuel filter. If they are
OK, replace the fuel pressure regulator (see page
11-337), then go to step 7.
(cont’d)Fuel System Too Lean
Fuel System Too Rich
Is DTC P0141 indicated?Does t he scr een i nd i cat e PASSE D? Is the fuel pressure OK?
08/08/21 14:17:24 61SNR030_110_0113
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DYNOMITE -2009-

µ
µ
µ
µ
µ
µ
µ
µ µ
µ
µ
µ
µ
µ
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
11-116
PGM-FI System
DTC Troubleshooting (cont’d)
8. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Go to step 9.
Intermittent failure, the system is OK at this
time.
9. Turn the ignition switch to LOCK (0).
10. Check the fuel quality.
Go to step 11.
Drain the tank, fill it with a known-good fuel,
then go to step 25.
11. Inspect the spark plugs (see page 4-21). If the spark plugs are fouled or worn, replace them.
12. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
 ENGINE S PEED
 VSS
 REL TP SENSOR
 CLV (calculated load value)
 APP SENSOR
13. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Go to step 14.
Go to step 25. 14. Check the fuel pressure (see page 11-325).
Go to step 15.
 If the fuel pressure is too high, replace the fuel pressure regulator (see page 11-337), then go to
step 25.
 If the fuel pressure is too low, check the fuel pump, the fuel feed pipe, and the fuel filter. If
they are OK, replace the fuel pressure regulator
(see page 11-337), then go to step 25.
15. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
16. Check for these conditions:  Engine coolant temperature (ECT SENSOR 1)above80°C(176°F)
 A/T in P or N, M/T in neutral
 All electrical loads off
17. Monitor the ENGINE SPDEED in the DATA LIST with the HDS, and hold the engine speed at
2,500 rpm. Once the engine speed is met, hold the
accelerator pedal steady for more than 10 seconds.
Repeat step 17.
Go to step 18.
18. While holding the engine speed at 2,500 rpm, check the MAF SENSOR in the DATA LIST with the HDS.
Go to step 19.
Replace the MAF sensor/IAT sensor (see page
11-224), then go to step 25.
Does the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 M I SF I RE , and / or CY L4 M I SF I RE show mi sf i r ecounts?
Is the quality good?
Does the CYL1 MISFIRE, CYL2 MISFIRE, CYL3M I SF I RE , and / or CY L4 M I SF I RE show mi sf i r ecounts? Is the fuel pressure OK?
Di d t he engi ne speed v ar y mor e t han 100 r pm f r om2,500 rpm?
Is t her e about 6.0 8.6 ( K 20Z 2 engi ne) or5.7 8.3 (K 20Z 3 engine) gm/ s?
08/08/21 14:17:24 61SNR030_110_0116
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Î
(#')
11-311
Fuel Supply System
Component Location Index
FUEL FEED LINE
FUEL VAPOR LINE
FUEL RAIL
QUICK-CONNECT FITTING QUICK-CONNECT FITTING
FUEL FILL CAP
FUEL TANK
FUEL PUMPFUEL GAUGE SENDING UNIT
FUEL PRESSURE REGULATOR
FUEL FILTER
FUEL TANK UNIT
FUEL LINE/
FUEL LINE/
(cont’d)
Precautions, page 11-328
Removal, page 11-329
Installation, page 11-331 Precautions, page 11-328
Removal, page 11-329
Installation, page 11-331
Draining, page 11-325
Replacement, page 11-339
Replacement, page 11-338Test, page 11-340
Replacement, page 11-338Replacement, page 11-337
Replacement, page 11-337
Removal and Installation,
page 11-334
08/08/21 14:29:41 61SNR030_110_0311
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