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Acura RSX Honda Integra. Manual - part 111

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YES

11-150

PGM-FI System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR E (31P)

JUMPER
WIRE

SG3
(PNK)

SHO2S
(WHT/RED)

SECONDARY HO2S (SENSOR 2) 4P CONNECTOR

SHO2S
(WHT/RED)

JUMPER
WIRE

ECM/PCM CONNECTOR E (31P)

SHO2S
(WHT/RED)

10. Connect ECM/PCM connector terminals E2 and E4

with a jumper wire.

11. Turn the ignition switch ON (II).

12. Check the secondary HO2S (Sensor 2) output

voltage with a scan tool or the HDS.

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).

Go to step 13.

13. Turn the ignition switch OFF.

14. Remove the jumper wire.

15. Disconnect ECM/PCM connector E (31P).

16. Connect secondary HO2S (Sensor 2) 4P connector

terminal No. 2 to body ground with a jumper wire.

17. Check for continuity between ECM/PCM connector

terminal E2 and body ground.

Repair open in the wire between the ECM/

PCM (E4) and the secondary HO2S (Sensor 2).

Repair open in the wire between the ECM/

PCM (E2) and the secondary HO2S (Sensor 2).

Wire side of female terminals

Terminal side of male terminals

Wire side of female terminals

Is ther e 0.9 V or mor e?

Is ther e continuity?

05/06/27 17:34:22 61S6M040_110_0150

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DTC P0138:

YES

11-151

SECONDARY HO2S (SENSOR 2)
4P CONNECTOR

SHO2S (WHT/RED)

SG3 (PNK)

JUMPER WIRE

SECONDARY HO2S (SENSOR 2)
4P CONNECTOR

SHO2S (WHT/RED)

JUMPER WIRE

Secondary HO2S (Sensor 2)

Circuit High Voltage
(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. Check the HO2S S2 in the DATA LIST with the HDS.

Go to step 5.

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.

5. Turn the ignition switch OFF.

6. Disconnect the secondary HO2S (Sensor 2) 4P

connector.

7. Connect secondary HO2S (Sensor 2) 4P connector

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

8. Turn the ignition switch ON (II).

9. Check the HO2S S2 in the DATA LIST with the HDS.

Go to step 10.

Go to step 19.

10. Turn the ignition switch OFF.

11. Remove the jumper wire from the secondary HO2S

(Sensor 2) 4P connector.

12. Connect secondary HO2S (Sensor 2) 4P connector

terminal No. 2 to body ground with a jumper wire.

13. Turn the ignition switch ON (II).

14. Check the HO2S S2 in the DATA LIST with the HDS.

Go to step 15.

Repair open in the wire between the ECM/

PCM (E4) and the secondary HO2S (Sensor 2), then
go to step 21.

(cont’d)

Terminal side of male terminals

Does the voltage stay at 1.25 V or mor e?

05/06/27 17:35:00 61S6M040_110_0151

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YES

11-152

PGM-FI System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR E (31P)

SHO2S
(WHT/RED)

15. Turn the ignition switch OFF.

16. Jump the SCS line with the HDS.

17. Disconnect ECM/PCM connector E (31P).

18. Check for continuity between ECM/PCM connector

terminal E20 and body ground.

Go to step 29.

Repair open in the wire between the ECM/

PCM (E20) and the secondary HO2S (Sensor 2),
then go to step 21.

19. Turn the ignition switch OFF.

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

11-279).

21. Reconnect all connectors.

22. Turn the ignition switch ON (II).

23. Reset the ECM/PCM with the HDS.

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

11-349).

25. 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.

26. Test-drive under these conditions:

• Engine coolant temperature above 176 °F (80 °C)
• A/T in D position (M/T in 4th gear)
• Engine speed at 1,500

3,000 rpm

• Drive 1 minute or more

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

If DTC P0138 is indicated, check for poor

connections or loose terminals at the secondary
HO2S (Sensor 2) and the ECM/PCM, then go step 1.
If any other Temporary DTCs or DTCs are indicated,
go to the indicated DTC’s troubleshooting.

Go to step 28.

28. Monitor the OBD STATUS for DTC P0138 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 25 and
recheck.

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?

05/06/27 17:35:01 61S6M040_110_0152

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YES

11-153

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

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

30. 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.

31. Test-drive under these conditions:

• Engine coolant temperature above 176 °F (80 °C)
• A/T in D position (M/T in 4th gear)
• Engine speed at 1,500

3,000 rpm

• Drive 1 minute or more

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

If DTC P0138 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.

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?

05/06/27 17:35:01 61S6M040_110_0153

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