Content .. 114 115 116 117 ..

Acura RSX Honda Integra. Manual - part 116

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YES

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

BRN

No. 2

P0302

RED

No. 3

P0303

BLU

No. 4

P0304

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

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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YES

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

BRN

No. 2

P0302

RED

No. 3

P0303

BLU

No. 4

P0304

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

BRN

No. 2

P0302

RED

No. 3

P0303

BLU

No. 4

P0304

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

Is ther e batter y voltage?

Is ther e continuity?

05/06/27 17:35:04 61S6M040_110_0171

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DTC P0301:

DTC P0302:

DTC P0303:

DTC P0304:

YES

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?

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YES

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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