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Acura RSX Honda Integra. Manual - part 118

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YES

11-178

PGM-FI System

DTC Troubleshooting (cont’d)

63. Reconnect all connectors.

64. Turn the ignition switch ON (II).

65. Reset the ECM/PCM with the HDS.

66. Clear the CKP pattern with the HDS.

67. Do the ECM/PCM idle learn procedure (see page

11-349).

68. Do the CKP pattern learn procedure (see page 11-5).

69. 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

70. Check for Temporary DTCs or DTCs with the HDS.

If DTC P0301,P0302, P0303, or P0304 are

indicated, check for poor connections or loose
terminals at the ignition coil, the injector, and the
ECM/PCM, then go to troubleshooting DTC P0300,
P0301, P0302, P0303, or P0304 (see page 11-164). If
any other Temporary DTCs or DTCs are indicated,
go to the indicated DTC’s toubleshooting.

Go to step 71.

71. Monitor the OBD STATUS for DTC P0301, P0302,

P0303, or P0304 in the DTCs MENU with the HDS.

Troubleshooting is complete.

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 69 and
recheck.

72. Update the ECM/PCM if it does not have the latest

software, or substitute a known-good ECM/PCM
(see page 11-6).

73. Test-drive the vehicle for several minutes in the

range of the recorded freeze data.

74. Check for Temporary DTCs or DTCs with the HDS.

If DTC P0301, P0302, P0303, or P0304 are

indicated, check for poor connections or loose
terminals at the injector, the ignition coil, and the
ECM/PCM, then go to step 1. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

If the ECM/PCM was updated, troubleshooting

is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-284).

Ar e any T empor ar y DT Cs or DT Cs indicated?

Does the scr een indicate PASSED?

Ar e any T empor ar y DT Cs or DT Cs indicated?

05/06/27 17:35:06 61S6M040_110_0178

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DTC P0325:

YES

11-179

ECM/PCM CONNECTOR A (31P)

KS (RED/BLU)

ENGINE WIRE HARNESS
6P CONNECTOR*

ENGINE WIRE HARNESS
8P CONNECTOR*

KS
(RED/BLU)

JUMPER
WIRE

ECM/PCM CONNECTOR A (31P)

KS (RED/BLU)

Knock Sensor Circuit Malfunction

(2002-2004 models)

NOTE: Information marked with

1 applies to K20A3

engine;

2 applies to K20A2 engine.

1. Reset the ECM/PCM (see page 11-4).

2. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.

3. Hold the engine speed at 3,000

4,000 rpm for at

least 10 seconds.

Go to step 4.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the knock sensor and the ECM/PCM.

4. Turn the ignition switch OFF.

5. Disconnect the starter subharness 8P

(6P)

connector.

6. Check for continuity between ECM/PCM connector

terminal A9 and body ground.

Repair short in the wire between the ECM/

PCM (A9) and the starter subharness 8P

(6P)

connector.

Go to step 7.

7. Connect engine wire harness 8P

(6P)

connector

terminal No. 7

(No. 5)

to body ground with a

jumper wire.

8. Check for continuity between body ground and

ECM/PCM connector terminal A9.

Go to step 9.

Repair open in the wire between the ECM/

PCM (A9) and the starter subharness 8P

(6P)

connector.

9. Check the starter subharness between 8P

(6P)

connector and the knock sensor for an open or
short. If it’s OK, substitute a known-good knock
sensor and recheck.

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).

Replace the original knock sensor and/or

starter subharness, K20A2 engine (see page
11-282), K20A3 engine (see page 11-282).

Wire side of female terminals

Is DT C P0325 indicated?

Is ther e continuity?

Is DT C P0325 indicated?

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DTC P0325:

YES

11-180

PGM-FI System

DTC Troubleshooting (cont’d)

KS
(RED/BLU)

ECM/PCM CONNECTOR A (31P)

KNOCK SENSOR 1P CONNECTOR

KS (RED/BLU)

JUMPER WIRE

KS
(RED/BLU)

ECM/PCM CONNECTOR A (31P)

Knock Sensor Circuit Malfunction

(2005-2006 models)

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.

4. Hold the engine speed at 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, 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 OFF.

7. Jump the SCS line with the HDS.

8. Disconnect the knock sensor 1P connector.

9. Disconnect ECM/PCM connector A (31P).

10. Check for continuity between ECM/PCM connector

terminal A1 and body ground.

Repair short in the wire between the ECM/

PCM (A1) and the knock sensor, then go to step 14.

Go to step 11.

11. Connect the knock sensor 1P connector terminal to

body ground with a jumper wire.

12. Check for continuity between ECM/PCM connector

terminal A1 and body ground.

Go to step 13.

Repair open in the wire between the ECM/

PCM (A1) and the knock sensor, then go to step 14.

Wire side of female terminals

Is DT C P0325 indicated?

Is ther e continuity?

05/06/27 17:35:07 61S6M040_110_0180

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11-181

13. Replace the knock sensor, K20Z1 engine (see page

11-282), K20A3 engine (see page 11-282).

14. Reconnect all connectors.

15. Turn the ignition switch ON (II).

16. Reset the ECM/PCM with the HDS.

17. Do the ECM/PCM idle learn procedure (see page

11-349).

18. Hold the engine speed at 3,000

4,000 rpm for at

least 10 seconds.

19. Check for Temporary DTCs or DTCs with the HDS.

Go to step 21.

Go to step 20.

20. Monitor the OBD STATUS for DTC P0325 in the

DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, go to step 1

and recheck. If the screen indicates NOT
COMPLETED, go to step 17 and recheck.

21. Update the ECM/PCM if it does not have the latest

software, or substitute a known-good ECM/PCM
(see page 11-6).

22. Hold the engine speed at 3,000

4,000 rpm for at

least 10 seconds.

23. Check for Temporary DTCs or DTCs with the HDS.

If DTC P0325 is indicated, check for poor

connections or loose terminals at the knock sensor
and the ECM/PCM, then go to step 1. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

If the ECM/PCM was updated, troubleshooting

is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-284).

Ar e any T empor ar y DT Cs or DT Cs indicated?

Does the scr een indicate PASSED?

Ar e any T empor ar y DT Cs or DT Cs indicated?

05/06/27 17:35:45 61S6M040_110_0181

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