2006 ACURA CSX Service Repair Manual

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Page 617 of 2893

ACURA CSX 2006 Service Repair Manual µ
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YES
NO
YES
NO YES
NO
11-293
18. Monitor the OBD STATUS for DTC P2649 in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indica

Page 618 of 2893

ACURA CSX 2006 Service Repair Manual

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Open
11-294VTEC/VTC
VTC Oil Control Solenoid Valve Removal/Test/Installation
A
C
B
12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
A VTC

Page 619 of 2893

ACURA CSX 2006 Service Repair Manual
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11-29511-295
CMP Sensor A Replacement
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
A
12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
B
C
A
8. Remove the VTC valve O-

Page 620 of 2893

Page 621 of 2893

ACURA CSX 2006 Service Repair Manual
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11-29611-296 VTEC/VTC
Rocker Arm Oil Control Valve
Removal/Installation
Rocker Arm Oil Pr

Page 622 of 2893

ACURA CSX 2006 Service Repair Manual Î
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11-297
Idle Control System
Component Location Index
ALTERNATOR
A/C PRESSURE SENSOR
A/C COMPRESSOR
CLUTCH RELAY
A/C COMPRESSOR ENGINE C

Page 623 of 2893

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DTC P0506:
YES
NO YES
NO
YES
NO
11-298Idle Control System
DTC Troubleshooting
Idle Control System RPM Lower
Than Expec

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DTC P0506:
YES
NO YES
NO
YES
NO
11-298Idle Control System
DTC Troubleshooting
Idle Control System RPM Lower
Than Expected
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. Check under these DATA LIST conditions with the HDS:
ECTSENSOR1above70°C(156°F)
IAT SENSOR above 0 °C (32 °F)
VSSis0km/h(0mph)
ST FUEL TRIM between 0.69 1.47
FSS is CLOSED
5. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.
Go to step 6.
If the screen indicates PASSED, go to step 15.
If the screen indicates EXECUTING, keep idling
until a result comes on. If the screen indicates OUT
OF CONDITION, go to step 4 and recheck.
6. Remove the intake air duct from the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine
(see page 11-349). 7. Check for dirt, carbon, or damage in the throttle
bore.
If there is dirt or carbon, clean the throttle
body (see page 11-344). Also check for damage to
the air cleaner element (see page 11-346), then go
to step 9. If there is damage in the throttle bore, go
to step 8.
Check the A/C system or the charging system,
then go to step 9.
8. Replace the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine (see page 11-349).
9. Reset the ECM/PCM with the HDS.
10. Do the ECM/PCM idle learn procedure (see page 11-310).
11. 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.
12. Check under these DATA LIST conditions with the HDS:
ECTSENSOR1above70°C(156°F)
IAT SENSOR above 0 °C (32 °F)
VSSis0km/h(0mph)
ST FUEL TRIM between 0.69 1.47
FSS is CLOSED
13. Check for Temporary DTCs or DTCs with the HDS.
Go to step 19.
Go to step 14.
Does t he scr een i nd i cat e F AILE D? Is there dirt, carbon, or damage in the throttle
bor e?
Is DT C P0506 ind icated ?
08/08/21 14:28:31 61SNR030_110_0298
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Page 624 of 2893

ACURA CSX 2006 Service Repair Manual µ
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YES
NO
YES
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YES
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YES
NO
YES
NO
11-299
14. Monitor the OBD STATUS for DTC P0506 in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other

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YES
NO
YES
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11-299
14. Monitor the OBD STATUS for DTC P0506 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, go to step 19. If
the screen indicates EXECUTING, keep idling until
a result comes on. If the screen indicates OUT OF
CONDITION, go to step 11.
15. Remove the intake air duct from the throttle body; K20Z2 engine (see page 11-348), K20Z3 engine
(see page 11-349).
16. Check for dirt, carbon, or damage in the throttle bore.
If there is dirt or carbon, clean the throttle
body (see page 11- 344). Also check for damage to
the air cleaner element (see page 11-346), then go
to step 9. If there is damage in the throttle bore, go
to step 8.
Go to step 17.
17. Recheck with different load conditions (turn on the headlights, blower motor, rear window defogger
and/or A/C, change the gear position, etc.).
18. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS.
Intermittent failure, the system is OK at this
time.
If the screen indicates FAILED, check the A/C
system and/or the charging system, then go to step
1 and recheck. If the screen indicates EXECUTING,
keep idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 17. 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. 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.
21. Check under these DATA LIST conditions with the HDS:
ECTSENSOR1above70°C(156°F)
IAT SENSOR above 0 °C (32 °F)
VSSis0km/h(0mph)
ST FUEL TRIM between 0.69 1.47
FSS is CLOSED
22. 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 20.
If the ECM/PCM was substituted, go to step 1.
Go to step 23.
23. Monitor the OBD STATUS for DTC P0506 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 22, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, 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 20. 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 20.
Does t he scr een i nd i cat e PASSE D?
Is there dirt, carbon, or damage in the throttlebor e?
Does t he scr een i nd i cat e PASSE D? Is DT C P0506 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:28:31 61SNR030_110_0299
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