2006 ACURA CSX idle air control

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YES
NO
YES
NO
DTC P1683:
11-24711-247
28. Reconnect all connectors.
29. 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).
30. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the ETCS control relay 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. Do not insert your fingers into the installed throttle
body when you turn the ignition switch to ON (II) or
while the ignition switch is ON (II). If you do, you
will seriously injure your fingers if the throttle valve
is activated.
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. Turn the ignition switch to LOCK (0), and wait 10 seconds.
5. Turn the ignition switch to ON (II).
6. Check for Temporary DTCs or DTCs with the HDS.
Go to step 7.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the intake air duct from the throttle body; K20Z2 engine (see page 11-348), K20Z3
engine (see page 11-349).
(cont’d)Throttle Valve Default Position
Spring Performance Problem
Is DTC P1659 indicated?
Is DTC P1683 indicated?
08/08/21 14:26:43 61SNR030_110_0247
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DYNOMITE -2009-


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YES
NO
YES
NO
DTC P1684:
11-24811-248Electronic Throttle Control System
DTC Troubleshooting (cont’d)
9. Push the throttle valve closed as shown.
10. Release the throttle valve. Clean the throttle body (see page 11- 344),
then go to step 12 and recheck. If DTC P1683 is
indicated, go to step 11.
Go to step 11.
11. Replace the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine (see page 11-349).
12. Turn the ignition switch to ON (II).
13. Reset the ECM/PCM with the HDS.
14. Do the ECM/PCM idle learn procedure (see page 11-310).
15. Turn the ignition switch to LOCK (0), and wait 10 seconds.
16. Turn the ignition switch to ON (II).
17. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the throttle body 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. Do not insert your fingers into the installed throttle
body when you turn the ignition switch to ON (II) or
while the ignition switch is ON (II). If you do, you
will seriously injure your fingers if the throttle valve
is activated.
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. Turn the ignition switch to LOCK (0), and wait 10 seconds.
5. Turn the ignition switch to ON (II).
6. Check for Temporary DTCs or DTCs with the HDS.
Go to step 7.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the intake air duct from the throttle body; K20Z2 engine (see page 11-348), K20Z3
engine (see page 11-349).Throttle Valve Return Spring
Performance Problem
Does the throttle valve return?
Is DTC P1683 indicated? Is DTC P1684 indicated?
08/08/21 14:26:43 61SNR030_110_0248
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DYNOMITE -2009-



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YES
NO
11-250Electronic Throttle Control System
DTC Troubleshooting (cont’d)
THROTTLE BODY 6P CONNECTOR
ETCSM
(GRN/YEL) ETCSM
(BLU/RED)
JUMPER WIRE ECM/PCM CONNECTOR C (44P)
ETCSM (BLU/RED)
ETCSM (GRN/YEL)
7. Turn the ignition switch to LOCK (0).
8. Disconnect the intake air duct from the throttle
body; K20Z2 engine (see page 11- 348), K20Z3
engine (see page 11-349).
9. Turn the ignition switch to ON (II).
10. Clear the DTC with the HDS.
11. Do the ETCS TEST in the INSPECTION MENU with the HDS.
12. Visually check the throttle valve operation.
Clean the throttle body (see page 11- 344),
then go to step 22 and recheck. If DTC P2101 is
indicated, go to step 19.
Go to step 13.
13. Turn the ignition switch to LOCK (0).
14. Disconnect the throttle body 6P connector.
15. Jump the SCS line with the HDS.
16. Disconnect ECM/PCM connector C (44P).
17. Connect throttle body 6P connector terminals No. 5 andNo.6withajumperwire. 18. Check for continuity between ECM/PCM connector
terminals C3 and C4.
Go to step 27.
Repair open in the wires between the throttle
body and the ECM/PCM (C3, C4), then go to step 21.
19. Turn the ignition switch to LOCK (0).
20. Replace the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine (see page 11-349).
21. Reconnect all connectors.
22. Turn the ignition switch to ON (II).
23. Reset the ECM/PCM with the HDS.
24. Do the ECM/PCM idle learn procedure (see page 11-310).
Wire side of female terminals Terminal side of female terminals
Does t he t hr ot t l e v al v e oper at e smoot hl y ?
Is there continuity?
08/08/21 14:26:44 61SNR030_110_0250
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DYNOMITE -2009-

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YES
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YES
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11-252Electronic Throttle Control System
DTC Troubleshooting (cont’d)
THROTTLE BODY 6P CONNECTOR
ETCSM ETCSM
4. Disconnect the throttle body 6P connector.
5. At the throttle body side, measure the resistance
between throttle body 6P connector terminals No. 5
and No. 6 with the throttle fully closed.
Go to step 6.
Repair short in the wires between the ECM/
PCM C3 (ETCSM line) and C4 (ETCSM line),
then go to step 7.
6. Replace the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine (see page 11-349).
7. Reconnect all connectors.
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. Turn the ignition switch to LOCK (0).
12. Turn the ignition switch to ON (II).
13. Slowly press the accelerator pedal to the floor.
14. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the throttle body 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.
15. Reconnect all connectors.
16. 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).
17. Turn the ignition switch to LOCK (0).
18. Turn the ignition switch to ON (II).
19. Slowly press the accelerator pedal to the floor.
20. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the throttle body and the ECM/PCM. If
the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then go to step 17.
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.
Terminal side of male terminals
Is t her e about 1.0 or l ess? Is DTC P2118 indicated?
Is DTC P2118 indicated?
08/08/21 14:26:44 61SNR030_110_0252
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DYNOMITE -2009-


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DTC P2176:
YES
NO YES
NO
YES
NO
11-266Electronic Throttle Control System
DTC Troubleshooting (cont’d)
THROTTLE BODY 6P CONNECTOR
ETCSM
(GRN/YEL) ETCSM
(BLU/RED)
JUMPER WIRE
Throttle Actuator Control System
Idle Position Not Learned
Do not insert your fingers into the installed throttle
body when you turn the ignition switch to ON (II) or
while the ignition switch is ON (II). If you do, you
will seriously injure your fingers if the throttle valve
is activated.
NOTE:  Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
 If DTC P2135 is stored at the same time as DTC P2176, troubleshoot DTC P2135 first, then recheck for DTC
P2176.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Turn the ignition switch to ON (II), and wait 10 seconds.
5. Check for Temporary DTCs or DTCs with the HDS.
Go to step 6.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM, then clean
the throttle body (see page 11- 344).
6. Turn the ignition switch to LOCK (0).
7. Disconnect the intake air duct from the throttle body; K20Z2 engine (see page 11- 348), K20Z3
engine (see page 11-349).
8. Turn the ignition switch to ON (II).
9. Clear the DTC with the HDS. 10. Visually check the throttle valve operation while
doing the ETCS TEST in the INSPECTION MENU
with the HDS.
Go to step 11.
Go to step 12.
11. Check for sludge or carbon on the throttle valve.
Clean the throttle body (see page 11-344),
then go to step 21 and recheck.
Go to step 18.
12. Turn the ignition switch to LOCK (0).
13. Disconnect the throttle body 6P connector.
14. Jump the SCS line with the HDS.
15. Disconnect ECM/PCM connector C (44P).
16. Connect throttle body 6P connector terminals No. 5 andNo.6withajumperwire.
Wire side of female terminals
Is DTC P2176 indicated? Does the throttle valve move to its f ully closed
posi t i on?
Is there sludge or carbon on the throttle valve?
08/08/21 14:26:50 61SNR030_110_0266
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DYNOMITE -2009-

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DTC P0010:
YES
NO YES
NO
YES
NO
11-274VTEC/VTC
DTC Troubleshooting
VTC OIL CONTROL SOLENOID VALVE 2P CONNECTOR
GND (BLK)
VTC OIL CONTROL SOLENOID VALVE 2P CONNECTOR
VTC Oil Control Solenoid Valve
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 VTC TEST in the INSPECTION MENU with the HDS.
5. Check for Temporary DTCs or DTCs with the HDS.
Go to step 6.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the VTC oil control solenoid valve and the ECM/
PCM.
6. Turn the ignition switch to LOCK (0).
7. Disconnect the VTC oil control solenoid valve 2P connector.
8. At the solenoid valve side, measure the resistance between VTC oil control solenoid valve 2P
connector terminals No. 1 and No. 2. Go to step 9.
Go to step 14.
9. Check for continuity between VTC oil control solenoid valve 2P connector terminal No. 1 and
body ground.
Go to step 10.
Repair open in the wire between the VTC oil
control solenoid valve and G101; A/T model
(see page 22-16), M/T model (see page 22-18), then
go to step 15.
10. Jump the SCS line with the HDS.
11. Disconnect ECM/PCM connector C (44P).
Terminal side of male terminals Wire side of female terminals
I s DT C P0010 i nd i cat ed ?
Is t her e 6.7 5 8.25 at r oom t emper at ur e?
Is there continuity?
08/08/21 14:28:21 61SNR030_110_0274
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DYNOMITE -2009-


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YES
NO
YES
NO YES
NO
YES
NO
11-275
ECM/PCM CONNECTOR C (44P)
VTC (BLU/WHT)
VTC OIL CONTROL SOLENOID VALVE 2P CONNECTOR ECM/PCM CONNECTOR C (44P)VTC (BLU/WHT)
VTC (BLU/WHT)
12. Check for continuity between ECM/PCM connectorterminal C23 and body ground.
Repair short in the wire between the ECM/
PCM (C23) and the VTC oil control solenoid valve,
then go to step 15.
Go to step 13.
13. Check for continuity between VTC oil control solenoid valve 2P connector terminal No. 2 and
ECM/PCM connector terminal C23.
Go to step 22.
Repair open in the wire between the ECM/
PCM (C23) and the VTC oil control solenoid valve,
then go to step 15. 14. Replace the VTC oil control solenoid valve
(see page 11-294).
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II).
17. Reset the ECM/PCM with the HDS.
18. Do the ECM/PCM idle learn procedure (see page 11-310).
19. Do the VTC TEST in the INSPECTION MENU with the HDS.
20. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the VTC oil control solenoid valve and
theECM/PCM,thengotostep1.
Go to step 21.
21. Monitor the OBD STATUS for DTC P0010 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 20,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the VTC oil
control solenoid valve and the ECM/PCM, then go
to step 1. If the screen indicates NOT COMPLETED,
go to step 19.
(cont’d)
Terminal side of female terminals
Wire side of female terminals
Terminal side of female terminals
Is there continuity?
Is there continuity? I s DT C P0010 i nd i cat ed ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:28:22 61SNR030_110_0275
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DYNOMITE -2009-

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YES
NO
YES
NO
YES
NO
DTC P0344:
11-28211-282VTEC/VTC
DTC Troubleshooting (cont’d)
14. Turn the ignition switch to ON (II).
15. Reset the ECM/PCM with the HDS.
16. Clear the CKP pattern with the HDS.
17. Do the ECM/PCM idle learn procedure (see page
11-310).
18. Do the CKP pattern learn procedure (see page 11-4).
19. Test-drive at a steady speed between 30 60 km/h (19 38 mph) for 10 minutes.
20. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the VTC oil control solenoid valve and
theECM/PCM,thengotostep1.
Go to step 21.
21. Monitor the OBD STATUS for DTC P0341 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 20,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the VTC oil
control solenoid valve and the ECM/PCM, then go
to step 1. If the screen indicates NOT COMPLETED,
go to step 19. 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, and let it idle for 10 seconds.
4. Check the CMP A NOISE in the DATA LIST with the HDS.
Go to step 7.
Go to step 5.
5. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
 ENGINE S PEED
 VSS
6. Check the CMP A NOISE in the DATA LIST with the HDS.
Go to step 7.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at CMP sensor A and the ECM/PCM.
7. Check for poor connections or loose terminals at these locations:
 CMP sensor A
 ECM/PCM
 Engine ground
 Body ground
Go to step 8.
Repair the connectors or the terminals, then
go to step 11.CMP Sensor A Circuit
Intermittent Interruption
I s DT C P0341 i nd i cat ed ?
Does t he scr een i nd i cat e PASSE D? Ar e 0 counts indicated?
Ar e 0 counts indicated?
Ar e t he connect i ons and t he t er mi nal s OK ?
08/08/21 14:28:24 61SNR030_110_0282
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DYNOMITE -2009-