2006 ACURA CSX Service Repair Manual

wheel coolant temperature drain bolt wheelbase headlamp ECU

Page 689 of 2893

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11-360EGR System
DTC Troubleshooting (cont’d)
14. Remove the EGR valve (see page 11-370).
15. Remove the EGR plate (see page 9-2), and clean the
intake m

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11-360EGR System
DTC Troubleshooting (cont’d)
14. Remove the EGR valve (see page 11-370).
15. Remove the EGR plate (see page 9-2), and clean the
intake manifold EGR port with throttle plate and
induction cleaner. Also, clean the passage inside
the EGR valve with throttle plate and induction
cleaner.
16. Install the EGR valve (see page 11-370).
17. Reconnect the EGR valve 6P connector.
18. Reconnect ECM/PCM connector B (44P).
19. Turn the ignition switch to ON (II).
20. Reset the ECM/PCM with the HDS.
21. Do the ECM/PCM idle learn procedure (see page 11-310).
22. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
23. Do the EGR TEST in the INSPECTION MENU with the HDS.
Go to step 32.
Go to step 24. 24. Turn the ignition switch to LOCK (0).
25. Replace the EGR valve (see page 11-370).
26. Reconnect all connectors.
27. Turn the ignition switch to ON (II).
28. Reset the ECM/PCM with the HDS.
29. Do the ECM/PCM idle learn procedure (see page
11-310).
30. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
31. Do the EGR TEST in the INSPECTION MENU with the HDS.
32. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the ECM/PCM, then
go to step 1. If the connections and terminals are
OK,gotostep34.
Go to step 33.
33. Monitor the OBD STATUS for DTC P0404 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 32,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EGR valve
and the ECM/PCM, then go to step 1. If the screen
indicates EXECUTING, keep idling until a result
comes on. If the screen indicates OUT OF
CONDITION, go to step 30.
Is the result OK ? Is DT C P0404 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:31:17 61SNR030_110_0360
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Page 690 of 2893

ACURA CSX 2006 Service Repair Manual
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DTC P0406:
11-36111-361
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
SG2 (GRN/BLK)
34. Upda

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DTC P0406:
11-36111-361
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
SG2 (GRN/BLK)
34. 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).
35. Start the engine. Hold the engine speed at 3000 rpm wit hout load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
36. Do the EGR TEST in the INSPECTION MENU with the HDS.
37. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the ECM/PCM. If the
ECM/PCM was updated, substitute a known-good
ECM/PCM (see page 11-7), then go to step 35. If the
ECM/PCM was substituted, go to step 1.
Go to step 38.
38. Monitor the OBD STATUS for DTC P0404 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 37, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EGR valve
and the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 35. If the ECM/PCM was substituted,
go to step 1. If the screen indicates EXECUTING,
keep idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 35. 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. Check EGR VLS in the DATA LIST with the HDS.
Go to step 3.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the EGR valve and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect EGR valve 6P connector.
5. Turn the ignition switch to ON (II).
6. Measure the voltage between EGR valve 6P connector terminals No. 2 and No. 3.
Go to step 11.
Go to step 7.
(cont’d)EGR Valve Position Sensor
Circuit High Voltage
Wire side of female terminals
I s DT Cs P0404 i nd i cat ed ?
Does t he scr een i nd i cat e PASSE D? I s 4.88 V or mor e i nd i cat ed ?
Is t her e about 5 V ?
08/08/21 14:32:24 61SNR030_110_0361
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Page 691 of 2893

ACURA CSX 2006 Service Repair Manual µ
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11-362EGR System
DTC Troubleshooting (cont’d)
ECM/PCM CONNECTOR B (44P)
EGR VALVE 6P CONNECTOR
SG2 (GRN/BLK)
SG2 (GRN/BLK)
7. Turn the ignition switc

Page 692 of 2893

ACURA CSX 2006 Service Repair Manual
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DTC P2413:
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11-363
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
EGR System Malfunction
NOTE: Before you tro

Page 693 of 2893

ACURA CSX 2006 Service Repair Manual
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11-364EGR System
DTC Troubleshooting (cont’d)
ECM/PCM CONNECTOR B (44P)
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
VCC2 (YEL/BLU)
ECM/PCM CONNECTOR B (44P)
EGRP (WH

Page 694 of 2893

ACURA CSX 2006 Service Repair Manual
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11-365
ECM/PCM CONNECTOR B (44P)EGR VALVE 6P CONNECTOR
EGRP (WHT/BLK)
EGRP (WHT/BLK) EGRP
SG2
EGR VALVE 6P CONNECTOR
20. Check for continuity between ECM/PCM con

Page 695 of 2893

ACURA CSX 2006 Service Repair Manual
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11-366EGR System
DTC Troubleshooting (cont’d)
EGRP
VCC2
EGR VALVE 6P CONNECTOR
ECM/PCM CONNECTOR B (44P)
EGR (BLU/RED)
24. At the EGR valve side, measure the r

Page 696 of 2893

ACURA CSX 2006 Service Repair Manual
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11-367
ECM/PCM CONNECTOR B (44P)
EGR (BLU/RED) EGR VALVE 6P CONNECTOR
EGR (BLU/RED)
EGR VALVE 6P CONNECTOR PG2 (BLK/RED)(BLK) *
*: ’07-

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