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Acura RSX Honda Integra. Manual - part 134

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０１

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DTC P2238:

YES

11-242

PGM-FI System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR A (31P)

AFS

(RED)

A/F Sensor (Sensor 1) AFS

Circuit Low Voltage
(2005-2006 models)

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

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

Go to step 4.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the ECM/PCM.

4. Turn the ignition switch OFF.

5. Jump the SCS line with the HDS.

6. Disconnect the A/F sensor (Sensor 1) 4P connector.

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

8. Check for continuity between ECM/PCM connector

terminal A31 and body ground.

Repair short in the wire between the ECM/

PCM (A31) and the A/F sensor (Sensor 1), then go
to step 11.

Go to step 9.

9. Replace the A/F sensor (Sensor 1) (see page

11-279).

10. Reconnect all connectors.

11. Turn the ignition switch ON (II).

12. Reset the ECM/PCM with the HDS.

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

11-349).

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

If DTC P2238 is indicated, check for poor

connections or loose terminals at the A/F sensor
(Sensor 1) and the ECM/PCM. If the connector and
terminal fits are OK, go to step 16. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

Go to step 15.

15. Monitor the OBD STATUS for DTC P2238 in the

DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, check for poor

connections or loose terminals at the A/F sensor
(Sensor 1) and the ECM/PCM, then go to step 1. If
the screen indicates NOT COMPLETED, go to step
13 and recheck.

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

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

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

Go to step 1 and recheck.

If the ECM/PCM was updated, troubleshooting

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

Wire side of female terminals

Is DT C P2238 indicated?

Is ther e continuity?

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

Does the scr een indicate PASSED?

Is DT C P2238 indicated?

05/06/27 17:38:32 61S6M040_110_0242

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０１

Ｓ６Ｍ６ＡＡＣＫ７２１０００９２２５２ＦＡＡＴ００

−

DTC P2252:

YES

11-243

ECM/PCM CONNECTOR A (31P)

AFS

(RED/YEL)

A/F Sensor (Sensor 1) AFS

Circuit Low Voltage
(2004 model)

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

2. Start the engine.

Go to step 3.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the ECM/PCM.

3. Turn the ignition switch OFF.

4. Disconnect the A/F sensor (Sensor 1) 4P connector,

and ECM/PCM connector A (31P).

5. Check for continuity between ECM/PCM connector

terminal A16 and body ground.

Repair short in the wire between the A/F

sensor (Sensor 1) and the ECM/PCM (A16).

Go to step 6.

6. Substitute a known-good A/F sensor (Sensor 1) 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 A/F sensor (Sensor 1) (see page

11-279).

Wire side of female terminals

Is DT C P2252 indicated?

Is ther e continuity?

Is DT C P2252 indicated?

05/06/27 17:38:33 61S6M040_110_0243

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０１

Ｓ６Ｍ６ＡＡＬＫ７２１０００９２２５２ＦＡＡＴ００

−

DTC P2252:

YES

11-244

PGM-FI System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR A (31P)

AFS
(RED/YEL)

A/F Sensor (Sensor 1) AFS

Circuit Low Voltage
(2005-2006 models)

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine.

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

Go to step 5.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the ECM/PCM.

5. Turn the ignition switch OFF.

6. Jump the SCS line with the HDS.

7. Disconnect the A/F sensor (Sensor 1) 4P connector.

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

9. Check for continuity between ECM/PCM connector

terminal A28 and body ground.

Repair short in the wire between the ECM/

PCM (A28) and the A/F sensor (Sensor 1), then go
to step 12.

Go to step 10.

10. Replace the A/F sensor (Sensor 1) (see page

11-279).

11. Reconnect all connectors.

12. Turn the ignition switch ON (II).

13. Reset the ECM/PCM with the HDS.

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

11-349).

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

If DTC P2252 is indicated, check for poor

connections or loose terminals at the A/F sensor
(Sensor 1) and the ECM/PCM. If the connector and
terminal fits are OK, go to step 17. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

Go to step 16.

16. Monitor the OBD STATUS for DTC P2252 in the

DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, check for poor

connections or loose terminals at the A/F sensor
(Sensor 1) and the ECM/PCM, then go to step 1. If
the screen indicates NOT COMPLETED, go to
step 14 and recheck.

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

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

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

Go to step 1 and recheck.

If the ECM/PCM was updated, troubleshooting

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

Wire side of female terminals

Is DT C P2252 indicated?

Is ther e continuity?

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

Does the scr een indicate PASSED?

Is DT C P2252 indicated?

05/06/27 17:38:33 61S6M040_110_0244

Ｓ６Ｍ６ＡＡＬＫ７２１０００９２２７０ＦＡＡＴ００

−

DTC P2270:

DTC P2271:

YES

11-245

Secondary HO2S (Sensor 2)

Circuit Signal Stuck Lean
(2005-2006 models)

Secondary HO2S (Sensor 2)

Circuit Signal Stuck Rich
(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. Test-drive under these conditions:

• Engine coolant temperature above 176 °F (80 °C)
• Vehicle speed at 35 mph (56 km/h) or more
• Drive 20 seconds or more

5. Monitor the OBD STATUS for DTC P2270 or P2271

in the DTCs MENU with the HDS.

Go to step 6.

If the screen indicates PASSED, intermittent

failure, system is OK at this time. Check for poor
connections or loose terminals at the secondary
HO2S (Sensor 2) and the ECM/PCM. If the screen
indicates EXECUTING, keep driving until a result
comes on. If the screen indicates OUT OF
CONDITION, go to step 3 and recheck.

6. Turn the ignition switch OFF.

7. Replace the secondary HO2S (Sensor 2) (see page

11-279).

8. Turn the ignition switch ON (II).

9. Reset the ECM/PCM with the HDS.

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

11-349).

11. 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.

12. Test-drive under these conditions:

• Engine coolant temperature above 176 °F (80 °C)
• Vehicle speed at 35 mph (56 km/h) or more
• Drive 20 seconds or more

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

If DTC P2270 or P2271 is indicated, check for

poor connections or loose terminals at the
secondary HO2S (Sensor 2) 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.

Go to step 14.

14. Monitor the OBD STATUS for DTC P2270 or P2271

in the DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, check for poor

connections or loose terminals at the secondary
HO2S (Sensor 2) 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 11 and
recheck.

Does the scr een indicate F AILED?

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

Does the scr een indicate PASSED?

05/06/27 17:38:33 61S6M040_110_0245

Content .. 132 133 134 135 ..