Acura RSX Honda Integra. Manual — part 116
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03
04
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YES
NO
YES
NO
YES
NO
YES
NO
11-170
PGM-FI System
DTC Troubleshooting (cont’d)
ECM/PCM CONNECTOR B (24P)
INJ1 (BRN)
INJ2 (RED)
INJ3 (BLU)
INJ4
(YEL)
INJECTOR 2P CONNECTOR
INJ
IGP
32. Measure voltage between body ground and the
appropriate ECM/PCM connector terminal (see
table).
PROBLEM
CYLINDER
DTC
ECM/PCM
TERMINAL
WIRE
COLOR
No. 1
P0301
B5
BRN
No. 2
P0302
B4
RED
No. 3
P0303
B3
BLU
No. 4
P0304
B2
YEL
Go to step 33.
Go to step 42.
33. Turn the ignition switch OFF.
34. Disconnect the injector 2P connector from the
problem cylinder.
35. Measure resistance between injector 2P connector
terminals No. 1 and No. 2.
Go to step 36.
Replace the injector (see page 11-277).
36. Exchange the injector from the problem cylinder
with one from another cylinder.
37. Reset the ECM/PCM.
38. Let the engine idle for 2 minutes.
39. Test-drive the vehicle several times in the range of
the freeze data or under various conditions if there
was no freeze data.
40. Check for a DTC or a Temporary DTC with a scan
tool or the HDS.
Go to step 41.
Intermittent misfire due to injector
malfunction.
41. Determine which cylinder(s) had the misfire.
Replace the faulty injector.
Update the ECM/PCM if it does not have the
latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).
42. Turn the ignition switch OFF.
43. Disconnect the injector 2P connector from the
problem cylinder.
44. Turn the ignition switch ON (II).
Wire side of female terminals
Terminal side of male terminals
Is ther e batter y voltage?
Is ther e 10
13
?
Is DT C or T empor ar y DT C P0301, P0302, P0303,
or P0304 indicated?
Does the misf ir e occur in the cylinder wher e the
injector was exchanged?
05/06/27 17:35:04 61S6M040_110_0170
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04
06
05
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YES
NO
YES
NO
YES
NO
11-171
INJECTOR 2P CONNECTOR
IGP (YEL/BLK)
ECM/PCM CONNECTOR B (24P)
INJ1 (BRN)
INJ2 (RED)
INJ3 (BLU)
INJ4
(YEL)
INJECTOR 2P CONNECTOR
JUMPER
WIRE
INJ
ECM/PCM CONNECTOR B (24P)
INJ1 (BRN)
INJ2 (RED)
INJ3 (BLU)
INJ4
(YEL)
45. Measure voltage between injector 2P connector
terminal No. 1 and body ground.
Go to step 46.
Repair open in the wire between the injector
and the PGM-FI main relay.
46. Turn the ignition switch OFF.
47. Check for continuity between body ground and the
appropriate ECM/PCM connector terminal (see
table).
PROBLEM
CYLINDER
DTC
ECM/PCM
TERMINAL
WIRE
COLOR
No. 1
P0301
B5
BRN
No. 2
P0302
B4
RED
No. 3
P0303
B3
BLU
No. 4
P0304
B2
YEL
Repair short in the wire between the ECM/
PCM and the injector.
Go to step 48.
48. Connect appropriate injector 2P connector terminal
No. 2 to body ground with a jumper wire (see table).
PROBLEM
CYLINDER
DTC
WIRE
COLOR
No. 1
P0301
BRN
No. 2
P0302
RED
No. 3
P0303
BLU
No. 4
P0304
YEL
49. Check for continuity between body ground and the
appropriate ECM/PCM connector terminal (see
table).
PROBLEM
CYLINDER
DTC
ECM/PCM
TERMINAL
WIRE
COLOR
No. 1
P0301
B5
BRN
No. 2
P0302
B4
RED
No. 3
P0303
B3
BLU
No. 4
P0304
B2
YEL
Replace the injector (see page 11-277), then
recheck.
Repair open in the wire between the ECM/
PCM and the injector.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e batter y voltage?
Is ther e continuity?
Is ther e continuity?
05/06/27 17:35:04 61S6M040_110_0171
S6M6AALK72100090301FAAT00
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DTC P0301:
DTC P0302:
DTC P0303:
DTC P0304:
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
11-172
PGM-FI System
DTC Troubleshooting (cont’d)
No. 1 Cylinder Misfire Detected
(2005-2006 models)
No. 2 Cylinder Misfire Detected
(2005-2006 models)
No. 3 Cylinder Misfire Detected
(2005-2006 models)
No. 4 Cylinder Misfire Detected
(2005-2006 models)
1. Record all freeze data and on-board snapshots with
the HDS.
2. Clear the DTC with the HDS.
3. Start the engine (in Park or neutral), then let it idle
without load.
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 driving until
a result comes on. If the screen indicates OUT OF
CONDITION, wait for several minutes, and 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 speed
• Vehicle speed
• Throttle position
• CLV (calculated load value)
• Gear position
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.
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, system is OK at this
time.
9. Turn the ignition switch OFF.
10. Remove the intake manifold cover (see step 1 on
page 9-3).
11. Start the engine, and listen for a clicking sound at
the injector of the problem cylinder.
Go to step 12.
Go to step 43.
12. Turn the ignition switch OFF.
Does the scr een indicate F AILED?
Does CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ir e
counts?
Does the scr een indicate F AILED?
Does CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ir e
counts?
Does the injector click?
05/06/27 17:35:05 61S6M040_110_0172
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YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
11-173
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 speed
• Vehicle speed
• Throttle position
• CLV (calculated load value)
• Gear position
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 the
ignition coil connector (no misfire at this time).
Make sure the coil connections are secure.
16. Determine which cylinder had the misfire.
Replace the faulty ignition coil (see page
4-26), then go to step 63.
Go to step 17.
17. Turn the ignition switch OFF.
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 speed
• Vehicle speed
• Throttle position
• CLV (calculated load value)
• Gear position
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 63.
Go to step 22.
22. Turn the ignition switch OFF.
23. Exchange the injector from the problem cylinder
with one from 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 speed
• Vehicle speed
• Throttle position
• CLV (calculated load value)
• Gear position
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 in the
injector connector (no misfire at this time). Check
for poor connections or loose terminals at the
injector.
(cont’d)
Does CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ir e
counts?
Does the misf ir e occur in the cylinder wher e the
ignition coil was moved?
Does CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ir e
counts?
Does the misf ir e occur in the cylinder wher e the
spar k plug was moved?
Does CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ir e
counts?
05/06/27 17:35:05 61S6M040_110_0173
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