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Acura RSX Honda Integra. Manual - part 128

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YES

11-218

PGM-FI System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR A (31P)

AFS

(RED)

8. Check for continuity between ECM/PCM connector

terminal A6 and body ground.

Repair open in the wire between the A/F

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

Repair open in the wire between the A/F

sensor (Sensor 1) and the ECM/PCM (A6).

9. 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 ther e continuity?

Is DT C P1157 indicated?

05/06/27 17:37:51 61S6M040_110_0218

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DTC P1157:

YES

11-219

A/F SENSOR (SENSOR 1) 4P CONNECTOR

AFS
(YEL/GRN)

JUMPER WIRE

AFS
(RED)

ECM/PCM CONNECTOR A (31P)

AFS
(RED)

AFS
(RED/YEL)

A/F SENSOR (SENSOR 1) 4P CONNECTOR

AFS
(RED)

JUMPER WIRE

A/F Sensor (Sensor 1) AFS Circuit

High Voltage
(2005-2006 models)

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine, and wait 20 seconds.

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. Connect A/F sensor (Sensor 1) 4P connector

terminals No. 1 and No. 2 with a jumper wire.

10. Check for continuity between ECM/PCM connector

terminals A28 and A31.

Go to step 14.

Go to step 11.

11. Remove the jumper wire from the A/F sensor

(Sensor 1) 4P connector.

12. Connect A/F sensor (Sensor 1) 4P connector

terminal No. 1 to body ground with a jumper wire.

(cont’d)

Wire side of female terminals

Is DT C P1157 indicated?

Is ther e continuity?

05/06/27 17:37:52 61S6M040_110_0219

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YES

11-220

PGM-FI System

DTC Troubleshooting (cont’d)

AFS
(RED)

ECM/PCM CONNECTOR A (31P)

13. Check for continuity between ECM/PCM connector

terminal A31 and body ground.

Repair open in the wire between the ECM/

PCM (A28) and the A/F sensor (Sensor 1), then go
to step 15.

Repair open in the wire between the ECM/

PCM (A31) and the A/F sensor (Sensor 1), then go
to step 15.

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

11-279).

15. Reconnect all connectors.

16. Turn the ignition switch ON (II).

17. Reset the ECM/PCM with the HDS.

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

11-349).

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

If DTC P1157 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 21. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

Go to step 20.

20. Monitor the OBD STATUS for DTC P1157 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 18 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. Check for Temporary DTCs or DTCs with the HDS.

Go to step 20 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 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 P1157 indicated?

05/06/27 17:37:52 61S6M040_110_0220

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DTC P1162:

YES

11-221

AFS
(RED/YEL)

LG1
(BRN/YEL)

ECM/PCM CONNECTOR A (31P)

AFS

(RED)

AFS

(RED)

AFS

(RED/YEL)

ECM/PCM CONNECTOR A (31P)

JUMPER WIRE

A/F SENSOR (SENSOR 1) 4P CONNECTOR

AFS
(RED)

AFS
(YEL/GRN)

A/F Sensor (Sensor 1) Circuit

Malfunction
(2002-2003 models)

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

2. Start the engine, and wait for at least 2 minutes.

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. Start the engine.

5. Measure voltage between ECM/PCM connector

terminals A6 and A24 and between A16 and A24.

Go to step 6.

Go to step 10.

6. Turn the ignition switch OFF.

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

and ECM/PCM connector A (31P).

8. Connect ECM/PCM connector terminals A6 and A16

to body ground with a jumper wire.

9. Check for continuity between A/F sensor (Sensor 1)

4P connector terminals No. 1, No. 2, and body
ground individually.

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

11-279).

Repair open in the wire between the A/F

sensor (Sensor 1) and the ECM/PCM (A6 or A16).

(cont’d)

Wire side of female terminals

Is DT C P1162 indicated?

Is ther e 2.5

3.0 V ?

Is ther e continuity?

05/06/27 17:37:52 61S6M040_110_0221

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