ACURA CSX 2006 Service Repair Manual

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YES
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YES
NO
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 switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector B (44P).
10. Check for continuity between EGR valve 6P connector terminal No. 2 and ECM/PCM connector
terminal B33.
Go to step 18.
Repair open in the wire between the ECM/
PCM (B33) and the EGR valve, then go to step 13. 11. Turn the ignition switch to LOCK (0).
12. Replace the EGR valve (see page 11-370).
13. Reconnect all connectors.
14. Turn the ignition switch to ON (II).
15. Reset the ECM/PCM with the HDS.
16. Do the ECM/PCM idle learn procedure (see page
11-310).
17. 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.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
18. Reconnect all connectors.
19. 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).
20. 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 recheck. If the
ECM/PCM was substituted, go to step 1.
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 are indicated,
go to the indicated DTC’s troubleshooting.
Wire side of female terminals
Terminal side of female terminals
Is there continuity? Is DT C P0406 ind icated ?
Is DT C P0406 ind icated ?
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DTC P2413:
YES
NO
YES
NO YES
NO
11-363
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
EGR System Malfunction
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 without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
4. Do the EGR TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the EGR valve and the ECM/PCM.
Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Turn the ignition switch to ON (II).
7. Check the EGR VLS in the DATA LIST with the HDS.
Go to step 8.
Go to step 21. 8. Turn the ignition switch to LOCK (0).
9. Disconnect the EGR valve 6P connector.
10. Turn the ignition switch to ON (II).
11. Measure the voltage between EGR valve 6P connector terminal No. 3 and body ground.
Go to step 16.
Go to step 12.
(cont’d)
Wire side of female terminals
Is the result OK ?I s about 0 V i nd i cat ed ? Is t her e about 5 V ?
08/08/21 14:32:24 61SNR030_110_0363
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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 (WHT/BLK)
12. Turn the ignition switch to LOCK (0).
13. Jump the SCS line with the HDS.
14. Disconnect ECM/PCM connector B (44P).
15. Check for continuity between ECM/PCM connectorterminal B18 and EGR valve 6P connector terminal
No. 3.
Go to step 52.
Repair open in the wire between the EGR
valve and the ECM/PCM (B18), then go to step 44. 16. Turn the ignition switch to LOCK (0).
17. Jump the SCS line with the HDS.
18. Disconnect ECM/PCM connector B (44P).
19. Check for continuity between ECM/PCM connector
terminal B29 and body ground.
Repair short in the wire between the ECM/
PCM (B29) and the EGR valve, then go to step 44.
Go to step 20.
Wire side of
female terminals
Terminal side of female terminals Terminal side of female terminals
Is there continuity?
Is there continuity?
08/08/21 14:32:25 61SNR030_110_0364
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YES
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NO
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 connector
terminal B29 and EGR valve 6P connector terminal
No. 1.
Go to step 21.
Repair open in the wire between the ECM/
PCM (B29) and the EGR valve, then go to step 44.
21. Turn the ignition switch to LOCK (0).
22. If not already done, disconnect the EGR valve 6P connector. 23. At the EGR valve side, measure the resistance
between EGR valve 6P connector terminals No. 1
and No. 2.
Go to step 43.
Go to step 24.
(cont’d)
Wire side of female terminals
Terminal side of female terminals Terminal side of male terminals
Is there continuity?
Is t her e 100 k or mor e?
08/08/21 14:32:25 61SNR030_110_0365
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YES
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NO
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 resistancebetween EGR valve 6P connector terminals No. 1
and No. 3.
Go to step 43.
Go to step 25.
25. If not already done, jump the SCS line with the HDS.
26. If not already done, disconnect ECM/PCM connector B (44P). 27. Check for continuity between ECM/PCM connector
terminal B2 and body ground.
Repair short in the wire between the ECM/
PCM (B2) and the EGR valve, then go to step 44.
Go to step 28.
Terminal side of male terminals Terminal side of female terminals
Is t her e 100 k or mor e?Is there continuity?
08/08/21 14:32:25 61SNR030_110_0366
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YES
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YES
NO YES
NO
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) *
*: ’07-09 models EGR
PG2
EGR VALVE 6P CONNECTOR
JUMPER WIRE
BATTERY
28. Check for continuity between ECM/PCM connector terminal B2 and EGR valve 6P connector terminal
No. 4.
Go to step 29.
Repair open in the wire between the ECM/
PCM (B2) and the EGR valve, then go to step 44.
29. Check for continuity between EGR valve 6P connector terminal No. 6 and body ground.
Go to step 30.
Repair open in the wire between the EGR
valve and G101; A/T model (see page 22-16), M/T
model (see page 22-18), then go to step 44. 30. Reconnect ECM/PCM connector B (44P).
31. Connect the battery positive terminal to EGR valve
6P connector terminal No. 4 with a jumper wire.
32. Start the engine, and let it idle. Then connect the battery negative terminal to EGR valve 6P
connector terminal No. 6 with a jumper wire.
Go to step 51.
Go to step 33.
(cont’d)
Wire side of
female terminals
Terminal side of female terminals
Wire side of female terminals Terminal side of male terminals
Is there continuity?
Is there continuity? Does t he engi ne st al l or r un r ough?
08/08/21 14:32:26 61SNR030_110_0367
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11-368EGR System
DTC Troubleshooting (cont’d)
33. Turn the ignition switch to LOCK (0).
34. Remove the EGR valve (see page 11-370).
35. 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.
36. Install the EGR valve (see page 11-370).
37. Reconnect all connectors.
38. Turn the ignition switch to ON (II).
39. Reset the ECM/PCM with the HDS.
40. Do the ECM/PCM idle learn procedure (see page 11-310).
41. Do the EGR TEST in the INSPECTION MENU with the HDS.
Go to step 49.
Go to step 42. 42. Turn the ignition switch to LOCK (0).
43. Replace the EGR valve (see page 11-370).
44. Reconnect all connectors.
45. Turn the ignition switch to ON (II).
46. Reset the ECM/PCM with the HDS.
47. Do the ECM/PCM idle learn procedure (see page
11-310).
48. Do the EGR TEST in the INSPECTION MENU with the HDS.
49. 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.
Go to step 50.
50. Monitor the OBD STATUS for DTC P2413 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 49,
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 47.
Is the result OK ? Is DTC P2413 indicated?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:32:26 61SNR030_110_0368
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11-369
51. Turn the ignition switch to LOCK (0).
52. Reconnect all connectors.
53. 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).
54. Do the EGR TEST in the INSPECTION MENU with the HDS.
55. 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 54. If the
ECM/PCM was substituted, go to step 1.
Go to step 56.
56. Monitor the OBD STATUS for DTC P2413 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 55, 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 54. 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 54.
I s DT Cs P2413 i nd i cat ed ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:32:26 61SNR030_110_0369
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11-370EGR System
EGR Valve Replacement
A
B
C
D
F
E
22 N·m
(2.2 kgf·m,
16 lbf·ft)
1. Remove the air cleaner (see page 11-345).
2. Relieve the fuel pressure (see page 11-322).
3. Remove the fuel line (A). Disconnect the hose (B).
4. Disconnect CMP sensor A connector (C).
5. Remove the EGR valve 6P connector (D).
6. Remove the EGR valve (E).
7. Install the parts in the reverse order of removal
with a new gasket (F).
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11-371
PCV System
Component Location Index
PCV VALVE
Inspection (K20Z2 engine), page 11-372
Inspection (K20Z3 engine), page 11-372
Replacement, page 11-373
* : This illustration shows K20Z2 engine.
08/08/21 14:32:28 61SNR030_110_0371
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