2006 ACURA CSX brake

ÎECM Circuit Diagram (K20Z3 engine) (cont’d)
11-64Fuel and Emissions Systems
System Description (cont’d)
ECT SENSOR 2
1
A33
ECT2
2
A9
SG6 GRN
BLK
A/C PRESSURE
SENSOR
1
A19
VCC6 RED
2
A16
ACPD LT GRN
3
BLK
1
FTP SENSOR
2
A26
FTP
3
BLK
1
A10
VSV LT GRN
LT GRN
EVAP CANISTER
VENT SHUT VALVE
2
PUR
A28
NEP BLU
To
EPS CONTROL UNIT
3
A39
BKSWNC BRN Brake pedal pressed: closed
Brake pedal released: open
Brake pedal pressed: open
Brake pedal released: closed
4
YEL 1
WHT 2
LT GRN 12
9
10
11 8
RED
BLK
PUR C204
O Q
P BRAKE PEDAL
POSITION SWITCH
N
LT BLU Clutch pedal pressed: open
Clutch pedal released: closed
CLUTCH PEDAL
POSITION SWITCH
A41
CRMTCLS L
BLK 3 2
G401 BLU
LT GRN
LT GRN RED BLK
08/08/21 14:15:29 61SNR030_110_0064
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DTC P0101:
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
11-74
PGM-FI System
DTC Troubleshooting
MAF Sensor Circuit Range/
Performance Problem
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 P1128, P1129, P2228, and/or P2229 are stored at the same time as DTC P0101, troubleshoot those
DTCs first, then recheck for DTC P0101.
1. Check for poor connections or damage to these parts:
 PCV hose
 Intake air duct
 Air cleaner
 Purge (PCS) line
 Brake booster
 Brake booster hose
Go to step 2.
Repair or replace the damaged part(s), then
go to step 17.
2. Check for damage or looseness at the air duct in the air cleaner.
Go to step 3.
Reconnect or replace the air duct in the air
cleaner, then go to step 15.
3. Check for a dirty air cleaner element.
Replace the air cleaner element (see page
11-346), then go to step 15.
Go to step 4. 4. Turn the ignition switch to LOCK (0).
5. Turn the ignition switch to ON (II).
6. Check the MAF SENSOR in the DATA LIST with the
HDS.
Go to step 7.
Go to step 13.
7. Start the engine.
8. Vary the engine speed between 2,000 rpm and 3,000 rpm.
9. Check the MAF SENSOR in the DATA LIST with the HDS.
Go to step 10.
Go to step 13.
10. 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.
11. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
 ENGINE S PEED
 VSS
 MAP SENSOR
 MAF SENSOR
12. Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HDS.
Go to step 13.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the MAF
sensor/IAT sensor and the ECM/PCM. If the screen
indicates NOT COMPLETED, go to step 11 and
recheck.
Ar e t he par t s OK ?
Is it OK ?Is it dirty? Is t her e about 0.2 gm/ s or 0.5 V ?
Does t he r ead i ng change?
Does t he scr een i nd i cat e F AILE D?
08/08/21 14:15:37 61SNR030_110_0074
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YES
NO
YES
NO YES
NO
YES
NO
11-114
PGM-FI System
DTC Troubleshooting (cont’d)
2. Check for vacuum leaks at these parts:
 PCV valve
 PCV hose
 EVAP canister purge valve
 Throttle body
 Intake manifold
 Brake booster
 Brake booster hose
 Intake air duct
Go to step 3.
Repair or replace the part(s) with leaks, then
go to step 7.
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 for these conditions:  Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
 A/T in N, M/T in neutral
 All electrical loads off
5. Monitor the ENGINE SPEED in the DATA LIST with the HDS, and hold the engine speed at 2,500 rpm.
Once the engine speed is met, hold the accelerator
pedal steady for more than 10 seconds.
Repeat step 5.
Go to step 6. 6. While holding the engine speed at 2,500 rpm, check
the MAF SENSOR in the DATA LIST with the HDS.
Check the engine valve clearances and adjust
them if needed; K20Z2 engine (see page 6-12),
K20Z3 engine (see page 6-14). If the valve
clearances are OK, replace the injectors (see page
11-219), then go to step 7.
Replace the MAF sensor/IAT sensor (see page
11-224), then go to step 7.
7. Turn the ignition switch to ON (II).
8. Reset the ECM/PCM with the HDS.
9. Do the ECM/PCM idle learn procedure (see page 11-310).
10. 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.
11. Test-drive under these conditions:  Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
 A/TinD,M/Tin4th
 Drive at a steady speed between 24 120 km/h (15 75 mph) for 15 minutes
NOTE: DTC P0171 and/or P0172 may take up to
80 minutes of test driving to set. Using the HDS,
monitor or the air fuel feed back average (AF FB
AVE). If the AF FB AVE stays within 0.80 1.25,
there is no problem at this time.
12. Check for Temporary DTCs or DTCs with the HDS.
Go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Ar e t he par t s OK ?
Di d t he engi ne speed v ar y mor e t han 100 r pm f r om2,500 rpm? Is t her e about 6.0 8.6 ( K 20Z 2 engi ne) or 5.7
8.3(K20Z3engine)gm/s?
I s DT C P017 1 or P017 2 i nd i cat ed ?
08/08/21 14:17:24 61SNR030_110_0114
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DTC P1129:
YES
NO
YES
NO YES
NO
11-156PGM-FI System
DTC Troubleshooting (cont’d)
MAP Sensor Signal Higher 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. Check for vacuum leaks in these parts:  PCV valve
 PCV hose
 EVAP canister purge valve
 Throttle body
 Intake manifold
 Brake booster
 Brake booster hose
Repair or replace the part(s) with vacuum
leaks, then go to step 9.
Go to step 2.
2. 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.
3. ChecktheMAPSENSORintheDATALISTwiththe HDS.
Go to step 7.
Go to step 4.
4. Clear the DTC with the HDS.
5. Test-drive under these conditions:  Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
 A/TinD,M/Tin5th
 Drive at a steady speed between 88 120 km/h (55 75 mph) for 10 seconds
 During the drive, decelerate (with the throttle fully closed) for at least 2 seconds 6. Monitor the OBD STATUS for DTC P1129 in the
DTCs MENU with the HDS.
Go to step 7.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the MAP
sensor and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 5 and recheck.
7. Turn the ignition switch to LOCK (0).
8. Replace the MAP sensor (see page 11-224).
9. Turn the ignition switch to ON (II).
10. Reset the ECM/PCM with the HDS.
11. Do the ECM/PCM idle learn procedure (see page 11-310).
12. 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.
13. Test-drive under these conditions:  Engine coolant temperature (ECT SENSOR 1)above70°C(158°F)
 A/TinD,M/Tin5th
 Drive at a steady speed between 88 120 km/h (55 75 mph) for 10 seconds
 During the drive, decelerate (with the throttle fully closed) for at least 2 seconds
Ar e t her e any v acuum l eak s?
I s mor e t han 36.9 k Pa ( 27 7 mmH g, 11.0 i n.H g) or1.1 V hel d f or mor e t han f or 5 second s? Does t he scr een i nd i cat e F AILE D?
08/08/21 14:20:22 61SNR030_110_0156
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Special Tools Required
11-227
ECM/PCM Update
A
 Honda diagnostic system (HDS) tablet tester
 Honda interface module (HIM) and an iN workstation
with the latest HDS software version
 HDS pocket tester
 GNA 600 and iN workstation with the latest HDS software version
Any one of the above updating tools can be used.
NOTE:  Make sure the HDS/iN workstation has the latest HDS software version.
 Before you update the ECM/PCM, make sure the battery in the vehicle is fully charged, and connect a
jumper battery (not a battery charger) to maintain
system voltage.
 Never turn the ignition switch to LOCK (0) or ACC (I) during the update. If there is a problem with the
update, l eave the ignition switch to ON (II).
 To prevent ECM/PCM damage, do not operate anything electrical (headlights, audio system, brakes,
A/C, power windows, moonroof (if equipped), door
locks, etc.) during the update.
 To ensure the latest program is installed, do an ECM/ PCM update when ever the ECM/PCM is substituted or
replaced.
 You cannot update an ECM/PCM with a program it already has. It will only accept a new program.
 High temperature in the engine compartment might cause the ECM/PCM to become too hot to run the
update. If the engine was running before this
procedure, open the hood, and cool the engine
compartment.
 If you need to diagnose the Honda interface module (HIM) because the HIM’s red ( 3) light came on or
was flashing during the update, l eave the ignition
switch in ON (II) when you disconnect the HIM from
the data link connector (DLC). This will pr event ECM/
PCM damage. 1. Turn the ignition switch to ON (II), but do not start
the engine.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.
3. Make sure the HDS communicates with the ECM/ PCM. If it doesn’t, go to the DLC circuit
troubleshooting (see page 11-204). If you are
returning from the DLC circuit troubleshooting, skip
steps 4 to 5 and clean the throttle body after
updating the ECM/PCM (see page 11- 344).
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION CHECK, and follow the HDS screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED,
continue this procedure.
6. Exit the HDS diagnostic system, then select the update mode, and follow the screen prompts to
update the ECM/PCM.
(cont’d)
08/08/21 14:23:39 61SNR030_110_0227
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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 CONTROL MODULE (ECM)/
POWERTRAIN CONTROL MODULE (PCM)
BRAKE PEDAL POSITION SWITCH
Signal Circuit Troubleshooting,
page 11-307 Signal Circuit
Troubleshooting,
page 11-306
Update, page 11-227
Substitution, page 11-7
Replacement, page 11-228
* : This illustration shows K20Z2 engine
Signal Circuit Troubleshooting,page 11-308
08/08/21 14:28:31 61SNR030_110_0297
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DTC P0507:
YES
NO
YES
NO YES
NO
YES
NO
11-300Idle Control System
DTC Troubleshooting (cont’d)
Idle Control System RPM Higher
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 for at least 20 seconds.
4. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.
Go to step 5.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. If the screen
indicates EXECUTING, keep idling until a result
comes on. If the screen indicates OUT OF
CONDITION, recheck with different load conditions
(electrical, A/C, gear position, etc.), then go to
step 3.
5. Check for vacuum leaks at these parts:  PCV valve
 PCV hose
 EVAP canister purge valve
 Throttle body
 Intake manifold
 Brake booster hose
 Brake booster
Repair or replace the leaking part(s), then go
to step 6.
Go to step 6. 6. Turn the ignition switch to ON (II).
7. Reset the ECM/PCM with the HDS.
8. Do the ECM/PCM idle learn procedure (see page
11-310).
9. 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 for at least 20 seconds.
10. Check for Temporary DTCs or DTCs with the HDS.
Go to step 12.
Go to step 11.
11. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 10,
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, then go to step 1. If the screen
indicates EXECUTING, keep idling until a result
comes on. If the screen indicates OUT OF
CONDITION, recheck with different load conditions
(turn on the headlights, blower motor, or A/C;
change the gear position, etc.), then go to step 9.
Does t he scr een i nd i cat e F AILE D?
Ar e t her e any l eak s? Is DT C P0507 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:28:31 61SNR030_110_0300
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YES
NO
YES
NO
YES
NO
11-308Idle Control System
Brake Pedal Position Switch Signal Circuit Troubleshooting
ECM/PCM CONNECTOR A (44P)
BKSW (LT GRN)
1. Turn the ignition switch to ON (II).
2. Check the BRAKE SWITCH in the DATA LIST withthe HDS.
Go to step 3.
Inspect the brake pedal position switch
(see page 19-6).
3. Press the brake pedal while checking the BRAKE SWITCH in the DATA LIST with the HDS.
The brake pedal position switch signal circuit
(BKSW line) is OK.
Go to step 4.
4. Turn the ignition switch to LOCK (0).
5. Jump the SCS line with the HDS.
6. Disconnect the brake pedal position switch 4P connector.
7. Disconnect ECM/PCM connector A (44P). 8. Check for continuity between ECM/PCM connector
terminal A40 and body ground.
Repair short in the wire between the ECM/
PCM (A40) and the No. 12 HORN/STOP (15 A) fuse.
Also, replace the No. 12 HORN/STOP (15 A) fuse.
Go to step 9.
Terminal side of female terminals
Does it indicate OFF?
Does i t change t o ON ? Is there continuity?
08/08/21 14:29:37 61SNR030_110_0308
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