2006 ACURA CSX Service Repair Manual

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Page 425 of 2893

ACURA CSX 2006 Service Repair Manual

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NO
11-102PGM-FI System
DTC Troubleshooting (cont’d)
A/F SENSOR (SENSOR 1) 4P CONNECTOR
B(PUR)
JUMPER WIRE
PGM-FI SUBRELAY 4P CONNECTOR B SUBRLY (PNK)

Page 426 of 2893

ACURA CSX 2006 Service Repair Manual Î
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11-103
E
A/F SENSOR (SENSOR 1) 4P CONNECTOR B(PUR)
20. Remove the PGM-FI subrelay (E) from the under-hood fuse/relay box.
21. Disconnect th

Page 427 of 2893

ACURA CSX 2006 Service Repair Manual (#

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DTC P0137:
11-10411-104PGM-FI System
DTC Troubleshooting (cont’d)
31. Reconnect all con

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DTC P0137:
11-10411-104PGM-FI System
DTC Troubleshooting (cont’d)
31. Reconnect all connectors.
32. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
33. Start the engine, and let it idle.
34. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the A/F sensor (Sensor 1), the PGM-FI
subrelay, and the ECM/PCM. If the ECM/PCM was
updated, substitute a known-good ECM/PCM
(see page 11-7), then go to step 33. If the ECM/PCM
was substituted, go to step 1.
Go to step 35.
35. Monitor the OBD STATUS for DTC P0135 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 34, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1), the PGM-FI subrelay, and the ECM/PCM.
If the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then go to step 33.
If the ECM/PCM was substituted, go to step 1. If the
screen indicates NOT COMPLETED, keep idling
until a result comes on. NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
Information marked with an asterisk( ) applies to ’07-09 models.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm (A/T in P or N, M/T in 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, the 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 to LOCK (0).
6. Remove the center console (see page 20-92).
7. Disconnect the secondary HO2S (Sensor 2) 4P connector.
8. Turn the ignition switch to ON (II).
9. Check the HO2S S2 in the DATA LIST with the HDS.
Go to step 10.
Go to step 14.
10. Turn the ignition switch to LOCK (0).
11. Jump the SCS line with the HDS.
12. Disconnect ECM/PCM connector C (44P).Secondary HO2S (Sensor 2)
Circuit Low Voltage
Is DT C P0135 ind icated ?
Does t he scr een i nd i cat e PASSE D? Does t he v ol t age st ay at 0.29 ( 0.05 ) V or l ess?
Does t he v ol t age st ay at 0.29 ( 0.05 ) V or l ess?
08/08/21 14:17:21 61SNR030_110_0104
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Page 428 of 2893

ACURA CSX 2006 Service Repair Manual µ

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11-105
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
SHO2S (WHT)
13. Check for continuity between secondary HO2S(Sensor 2) 4P connector terminal No. 2 and

Page 429 of 2893

ACURA CSX 2006 Service Repair Manual µ

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DTC P0138:
11-10611-106PGM-FI System
DTC Troubleshooting (cont’d)
SG6 (BLK)
JUMPER WIRE
SECON

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DTC P0138:
11-10611-106PGM-FI System
DTC Troubleshooting (cont’d)
SG6 (BLK)
JUMPER WIRE
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
SHO2S (WHT)
24. Reconnect all connectors.
25. Update the ECM/PCM if it does not have the latestsoftware (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
26. Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes
on.
27. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
A/TinD,M/Tin4th
Engine speed between 1,500 3,000 rpm
Drive1minuteormore
28. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the secondary HO2S (Sensor 2) and
the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 26. If the ECM/PCM was substituted,
go to step 1.
Go to step 29.
29. Monitor the OBD STATUS for DTC P0137 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228).
If the screen indicates FAILED, check for poor
connections or loose terminals at the secondary
HO2S (Sensor 2) and the ECM/PCM. If the ECM/
PCM was updated, substitute a known-good ECM/
PCM (see page 11-7), then go to step 26. If the ECM/
PCM was substituted, 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 26. NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm (A/T in P or N, M/T in 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, the 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 to LOCK (0).
6. Remove the center console (see page 20-92).
7. Disconnect the secondary HO2S (Sensor 2) 4P connector.
8. Connect secondary HO2S (Sensor 2) 4P connector terminals No. 1 and No. 2 with a jumper wire.Secondary HO2S (Sensor 2)
Circuit High Voltage
Terminal side of male terminals
Is DT C P0137 ind icated ?
Does t he scr een i nd i cat e PASSE D? Does t he v ol t age st ay at 1.27 V or mor e?
08/08/21 14:17:21 61SNR030_110_0106
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Page 430 of 2893

ACURA CSX 2006 Service Repair Manual
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11-107
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
SHO2S (WHT)JUMPER WIRE ECM/PCM CONNECTOR C (44P)
SHO2S (WHT/RED)
9. Turn the ignition switch to ON (

Page 431 of 2893

ACURA CSX 2006 Service Repair Manual µ
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YES
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YES
NO
11-108PGM-FI System
DTC Troubleshooting (cont’d)
26. Start the engine, and let it idle without load (A/T in
P or N, M/T in neutral

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11-108PGM-FI System
DTC Troubleshooting (cont’d)
26. Start the engine, and let it idle without load (A/T in
P or N, M/T in neutral) until the radiator fan comes
on.
27. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
A/TinD,M/Tin4th
Engine speed between 1,500 3,000 rpm
Drive about 1 minute or more
28. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the secondary HO2S (Sensor 2) and
theECM/PCM,thengotostep1.
Go to step 29.
29. Monitor the OBD STATUS for DTC P0138 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 28,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the secondary
HO2S(Sensor2)andtheECM/PCM,thengotostep
1. If the screen indicates EXECUTING, keep driving
until a result comes on. If the screen indicates OUT
OF CONDITION, go to step 26. 30. Reconnect all connectors.
31. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
32. Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes
on, then let it idle.
33. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
A/TinD,M/Tin4th
Engine speed between 1,500 3,000 rpm
Drive about 1 minute or more
34. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the secondary HO2S (Sensor 2) and
the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 32. If the ECM/PCM was substituted,
go to step 1.
Go to step 35.
35. Monitor the OBD STATUS for DTC P0138 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 34, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the secondary
HO2S (Sensor 2) and the ECM/PCM. If the ECM/
PCM was updated, substitute a known-good ECM/
PCM(seepage11-7),thengotostep32.IftheECM/
PCM was substituted, 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 32.
Is DT C P0138 ind icated ?
Does t he scr een i nd i cat e PASSE D? Is DT C P0138 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:17:22 61SNR030_110_0108
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Page 432 of 2893

ACURA CSX 2006 Service Repair Manual (#

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DTC P0139:
YES
NO YES
NO
YES
NO
11-109
Secondary HO2S (Sensor 2) Slow
Response
NOTE: Before you troubleshoot, record all free

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DTC P0139:
YES
NO YES
NO
YES
NO
11-109
Secondary HO2S (Sensor 2) Slow
Response
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm (A/T in P or N, M/T in neutral) until the
radiator fan comes on, then let it idle.
4. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
A/TinD,M/Tin4th
Vehicle speed at 56 km/h (35 mph)
Drive about 15 seconds
5. Monitor the OBD STATUS for DTC P0139 in the DTCs MENU with the HDS.
Go to step 6.
If the screen indicates PASSED, intermittent
failure, the 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 to LOCK (0).
7. Replace the secondary HO2S (Sensor 2) (see page 11-221).
8. Turn the ignition switch to ON (II).
9. Reset the ECM/PCM with the HDS.
10. Do the ECM/PCM idle learn procedure (see page 11-310).
11. Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes
on. 12. Test-drive under these conditions:
Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
A/TinD,M/Tin4th
Vehicle speed at 56 km/h (35 mph)
Drive about 15 seconds
13. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the secondary HO2S (Sensor 2) and
theECM/PCM,thengotostep1.
Go to step 14.
14. Monitor the OBD STATUS for DTC P0139 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 13,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the secondary
HO2S(Sensor2)andtheECM/PCM,thengotostep
1. If the screen indicates EXECUTING, keep driving
until a result comes on. If the screen indicates OUT
OF CONDITION, go to step 11.
Does t he scr een i nd i cat e F AILE D? Is DT C P0139 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:17:22 61SNR030_110_0109
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