2006 ACURA CSX check oil

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DTC P0300:
DTC P0301:
DTC P0302:
DTC P0303:
DTC P0304:
Special Tools Required YES
NO
YES
NO
YES
NO
11-115
Random Misfire and Any
Combination of the Following:
No. 1 Cylinder Misfire Detected
No. 2 Cylinder Misfire Detected
No. 3 Cylinder Misfire Detected
No. 4 Cylinder Misfire Detected
 Pressure gauge adapter 07NAJ-P07010A
 A/T low pressure gauge w/panel 07406-0070301
 A/T pressure hose 07406-0020201
 A/T pressure hose, 2,210 mm 07MAJ-PY4011A
 A/T pressure hose, adapter 07MAJ-PY40120
 Oil pressure hose 07ZAJ-S5AA200
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
 If the misfire is frequent enough to trigger detection of increased emissions during two consecutive
driving cycles, the MIL will come on, and DTC P0300
(and some of the combination of P0301 thr ough
P0304) will be stored.
 If the misfire is frequent enough to damage the catalyst, the MIL will blink whenever the misfire
occurs, and DTC P0300 (and some of the combination
of P0301 through P0304) will be stored. When the
misfire stops, the MIL will remain on.
 If any of the DTCs listed below are indicated at the same time as the random misfire DTCs, troubleshoot
those DTCs first, then recheck for random misfire
DTCs:
P0101, P0102, P0103: Mass air flow (MAF) sensor
P0107, P0108: Manifold absolute pressure (MAP)
sensor
P0171, P0172: Fuel system
P0335, P0339: Crankshaft position (CKP) sensor
P0365, P0369: Camshaft position (CMP) sensor B
P0401 , P0404 , P0416 , P2413 : Exhaust gas
recirculation (EGR) system
P0506, P0507: Idle control system
P2646, P2647, P2648, P2649: VTEC system : K20Z2 engine 1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine, and let it idle without load (A/T in
P or N, M/T in neutral).
4. Monitor the OBD STATUS for DTC P0301, P0302, P0303, or P0304 in the DTCs MENU with the HDS.
Go to step 9.
If the screen indicates PASSED, go to step 5. If
the screen indicates EXECUTING, keep idling until
a result comes on. If the screen indicates OUT OF
CONDITION, wait for several minutes, then recheck.
5. 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.
Go to step 6.
6. 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
7. Monitor the OBD STATUS for DTC P0301, P0302, P0303, or P0304 in the DTCs MENU with the HDS.
Go to step 9.
If the screen indicates PASSED, go to step 8. If
the screen indicates EXECUTING, keep driving until
a result comes on. if the screen indicates OUT OF
CONDITION, go to step 6 and recheck.
(cont’d)
Does t he scr een i nd i cat e F AILE D?
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?
Does t he scr een i nd i cat e F AILE D?
08/08/21 14:17:24 61SNR030_110_0115
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YES
NO YES
NO
YES
NO
11-117
07406-0020201 or
07MAJ-PY4011A and
07MAJ-PY40120
A
22 N·m
(2.2 kgf·m,
16 lbf·ft)
07406-0070301
B
07NAJ-P07010A
07ZAJ-S5AA200
19. Turn the ignition switch to LOCK (0).
20. Remove the cowl cover and the under cowl panel (see page 20-163).
21. Remove the rocker arm oil pressure switch (A), and attach the special tools as shown, then attach the
rocker arm oil pressure switch to the pressure
gauge attachment (B).
NOTE: Install the parts in the reverse order of
removal with a new O-ring.
22. Reconnect the rocker arm oil pressure switch 2P connector.
23. 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.
24. Check the oil pressure at engine speeds of 1,000 rpm and 2,000 rpm.
Check for air in the fuel line, then go to step
25.
Inspect the VTEC system, then go to step 25. 25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Clear the CKP pattern with the HDS.
28. Do the ECM/PCM idle learn procedure (see page
11-310).
29. Do the CKP pattern learn procedure (see page 11-4).
30. 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
31. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the ignition coil(s), the injector(s), and
the ECM/PCM, then go to troubleshooting DTC
P0301, P0302, P0303, or P0304 (see page 11-118).
Go to step 32.
32. Monitor the OBD STATUS for DTC P0301, P0302, P0303, or P0304 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 31,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, go to step 1
and recheck. If the screen indicates EXECUTING,
keep driving until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 30.
Is t he oi l pr essur e bel ow 49 k Pa ( 0.5 k gf / cm , 7psi)? Is DT C P0300, P0301, P0302, P0303, or P0304
indicated?
Does t he scr een i nd i cat e PASSE D?2
08/08/21 14:17:25 61SNR030_110_0117
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DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
YES
NO
YES
NO
11-119
12. Turn the ignition switch to LOCK (0).
13. Exchange the ignition coil from the problem
cylinder with one from another cylinder.
14. 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
15. 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 16.
Intermittent misfire due to poor contact at an
ignition coil connector(s). (no misfire at this time).
Check for poor connections or loose terminals at
the ignition coils.
16. Determine which cylinder had the misfire.
Replace the faulty ignition coil (see page
4-21), then go to step 60.
Go to step 17.
17. Turn the ignition switch to LOCK (0).
18. Exchange the spark plug from the problem cylinder with one from another cylinder.
19. 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 20. 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 21.
Intermittent misfire due to spark plug fouling
(no misfire at this time).
21. Determine which cylinder had the misfire.
Replace the faulty spark plug, then go to step
60.
Go to step 22.
22. Turn the ignition switch to LOCK (0).
23. Exchange the injector from the problem cylinder with one from the another cylinder.
24. Start the engine, and let it idle for 2 minutes.
25. 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
26. 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 27.
Intermittent misfire due to bad contact at an
injector connector (no misfire at this time). Check
for poor connections or loose terminals at the
injector(s).
(cont’d)
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?
Does the misf ir e occur in the cylinder wher e thei gni t i on coi l w as ex changed ? 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?
Does the misf ir e occur in the cylinder wher e thespar k pl ug w as ex changed ?
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?
08/08/21 14:17:25 61SNR030_110_0119
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YES
NO
YES
NO
YES
NO
11-120PGM-FI System
DTC Troubleshooting (cont’d)
IGNITION COIL 3P CONNECTOR
IG1 (BLK/WHT) IGNITION COIL 3P CONNECTOR
GND
(BLK)
27. Determine which cylinder had the misfire.
Replace the faulty injector (see page 11-219),
then go to step 60.
Go to step 28.
28. Turn the ignition switch to LOCK (0).
29. Disconnect the ignition coil 3P connector from the problem cylinder.
30. Turn the ignition switch to ON (II).
31. Measure the voltage between ignition coil 3P connector terminal No. 3 and body ground.
Go to step 32.
Repair open in the wire between the ignition
coil and the ignition coil relay, then go to step 60. 32. Turn the ignition switch to LOCK (0).
33. Check for continuity between ignition coil 3P
connector terminal No. 2 and body ground.
Go to step 34.
Repair open in the wire between the ignition
coil and G101, then go to step 60.
Wire side of female terminals Wire side of female terminals
Does the misf ir e occur in the cylinder wher e the
i nj ect or w as ex changed ?
Is there battery voltage? Is there continuity?
08/08/21 14:17:26 61SNR030_110_0120
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PROBLEM
CYLINDER
DTC ECM/PCM
TERMINAL WIRE
COLOR
YES
NO PROBLEM
CYLINDER
DTC ECM/PCM
TERMINAL WIRE
COLOR
YES
NO
11-121
ECM/PCM CONNECTOR C (44P) IGPLS4 (BRN)
IGPLS1 (YEL/GRN) IGPLS2 (BLU/RED) IGPLS3 (WHT/BLU)
ECM/PCM CONNECTOR C (44P)
IGPLS4 (BRN)
IGPLS1 (YEL/GRN) IGPLS2 (BLU/RED) IGPLS3 (WHT/BLU)IGNITION COIL 3P CONNECTOR
IGPLS
34. Turn the ignition switch to LOCK (0).
35. Jump the SCS line with the HDS.
36. Disconnect ECM/PCM connector C (44P).
37. Check for continuity between body ground and theappropriate ECM/PCM connector terminal of the
problem cylinder (see table).
No. 1 P0301 C15 YEL/GRN
No. 2 P0302 C16 BLU/RED
No. 3 P0303 C17 WHT/BLU
No. 4 P0304 C18 BRN
Repair short in the wire between the ECM/
PCM and the ignition coil, then go to step 60.
Go to step 38. 38. Check for continuity between appropriate ignition
coil 3P connector terminal No. 1 and the
appropriate ECM/PCM connector terminal of the
problem cylinder (see table).
No. 1 P0301 C15 YEL/GRN
No. 2 P0302 C16 BLU/RED
No. 3 P0303 C17 WHT/BLU
No. 4 P0304 C18 BRN
Go to step 39.
Repair open in the wire between the ECM/
PCM and the ignition coil, then go to step 60.
(cont’d)
Terminal side of female terminals Terminal side of female terminalsWire side of female terminals
Is there continuity?
Is there continuity?
08/08/21 14:18:50 61SNR030_110_0121
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DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
11-125
59. 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 70.
Replace the original injector (see page 11-219),
then go to step 60.
60. Turn the ignition switch to LOCK (0).
61. Reconnect all connectors.
62. Turn the ignition switch to ON (II).
63. Reset the ECM/PCM with the HDS.
64. Clear the CKP pattern with the HDS (see page 11-4).
65. Do the ECM/PCM idle learn procedure (see page 11-310).
66. Do the CKP pattern learn procedure (see page 11-4).
67. 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
68. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the ignition coil(s), the injector(s), and
the ECM/PCM, then go to the troubleshooting DTC
P0300, P0301, P0302, P0303, or P0304 (see page
11-115).
Go to step 69. 69. Monitor the OBD STATUS for DTC P0301, P0302,
P0303, or P0304 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 68,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the ignition coil,
the injector, and the ECM/PCM, then go to step 1. If
the screen indicates EXECUTING, keep driving until
a result comes on. If the screen indicates OUT OF
CONDITION, go to step 67.
70. 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).
71. 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
(cont’d)
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 DT C P0301, P0302, P0303, or P0304indicated? Does t he scr een i nd i cat e PASSE D?
08/08/21 14:18:52 61SNR030_110_0125
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YES
NO
YES
NO
YES
NO
DTC P0325:
11-12611-126PGM-FI System
DTC Troubleshooting (cont’d)
ECM/PCM CONNECTOR C (44P)
KS (RED/BLU)
72. Check for Temporary DTCs or DTCs with the HDS. Check for poor connections or loose
terminals at the ignition coil(s), the injector(s), and
the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 71. If the ECM/PCM was substituted,
go to step 1.
Go to step 73.
73. Monitor the OBD STATUS for DTC P0301, P0302, P0303, or P0304 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 72, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the ignition coil,
the injector, and the ECM/PCM. If the ECM/PCM
was updated, substitute a known-good ECM/PCM
(see page 11-7), then go to step 71. If the ECM/PCM
was substituted, go to step 1. If the screen indicates
EXECUTING, keep driving until a result comes on. If
the screen indicates OUT OF CONDITION, go to
step 71. NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed between 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.
4. Hold the engine speed between 3,000 4,000 rpm for at least 10 seconds.
5. Check for Temporary DTCs or DTCs with the HDS.
Go to step 6.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the knock sensor and the ECM/PCM.
6. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. Disconnect the knock sensor 1P connector (see page 11-223).
9. Disconnect ECM/PCM connector C (44P).
10. Check for continuity between ECM/PCM connector terminal C42 and body ground.Knock Sensor Circuit Malfunction
Terminal side of female terminals
Is DT C P0301, P0302, P0303, or P0304indicated?
Does t he scr een i nd i cat e PASSE D? I s DT C P0325 i nd i cat ed ?
08/08/21 14:18:52 61SNR030_110_0126
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YES
NO
YES
NO YES
NO
YES
NO
11-139
24. Compare the value of ECT SENSOR 1 and the
ambient temperature, and the value of ECT
SENSOR 2 and the ambient temperature
individually.
Replace the sensor that differed more than
3 °C (5.4 °F) from the ambient temperature, then go
to step 25.
Check and repair any problems with the
following items. Repair or replace them if needed,
then go to step 25. If every item is OK, go to step
32.
 Engine compression and cylinder leakdown
 VTEC system
 Engine oil
 A/C system
 Power steering
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see page 11-310).
28. Let the engine cool until the value of ECT SENSOR 1 is 50 °C (122 °F) or less.
29. Start the engine, and let it idle for 10 seconds or more.
30. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the CKP sensor, the throttle body, the
MAF sensor/IAT sensor, ECT sensor 1, ECT sensor
2, and the ECM/PCM, then go to step 1.
Go to step 31. 31. Monitor the OBD STATUS for DTC P050B in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 30,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the CKP sensor,
the throttle body, the MAF sensor/IAT sensor, ECT
sensor 1, ECT sensor 2, and the ECM/PCM, then go
to step 1. If the screen indicates EXECUTING, keep
idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 28.
32. 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).
33. Let the engine cool until the value of ECT SENSOR 1 is 50 °C (122 °F) or less.
34. Start the engine, and let it idle for 10 seconds or more.
35. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the CKP sensor, the throttle body, the
MAF/IAT sensor, ECT sensor 1, ECT 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 33. If the ECM/PCM was substituted,
go to step 1.
Go to step 36.
(cont’d)
Does ei t her sensor d i f f er mor e t han 3 ° C ( 5 .4 ° F )f r om t he ambi ent t emper at ur e?
Is DT C P050B ind icated ? Does t he scr een i nd i cat e PASSE D?
Is DT C P050B ind icated ?
08/08/21 14:18:56 61SNR030_110_0139
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