2006 ACURA CSX lights



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11-30911-309
Idle Speed Inspection
BRAKE PEDAL POSITION SWITCH
4P CONNECTOR
BKSW
(LT GRN)JUMPER WIRE
ECM/PCM CONNECTOR A (44P) BKSW (LT GRN) A
9. Connect brake pedal position switch 4P connector
terminal No. 2 to body ground with a jumper wire.
10. Check for continuity between ECM/PCM connector terminal A40 and body ground.
Repair open in the wire between the brake
pedal position switch and the No. 12 HORN/STOP
(15 A) fuse. Also, inspect the brake pedal position
switch (see page 19-6).
Repair open in the wire between the ECM/
PCM (A40) and the brake pedal position switch. NOTE:
 Before checking the idle speed, check these items: – The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs.
– Ignition timing
– Spark plugs
– Air cleaner
– PCV system
 Apply the parking brake, and make sure the headlights are off.
1. Disconnect the evaporative emission (EVAP) canister purge valve connector (see step 5 on page
11-409).
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).
(cont’d)
Wire side of female terminals
Terminal side of female terminals
Is there continuity?
08/08/21 14:29:38 61SNR030_110_0309
ProCarManuals.com
DYNOMITE -2009-



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µ
µ
YES
NO
11-30911-309
Idle Speed Inspection
BRAKE PEDAL POSITION SWITCH
4P CONNECTOR
BKSW
(LT GRN)JUMPER WIRE
ECM/PCM CONNECTOR A (44P) BKSW (LT GRN) A
9. Connect brake pedal position switch 4P connector
terminal No. 2 to body ground with a jumper wire.
10. Check for continuity between ECM/PCM connector terminal A40 and body ground.
Repair open in the wire between the brake
pedal position switch and the No. 12 HORN/STOP
(15 A) fuse. Also, inspect the brake pedal position
switch (see page 19-6).
Repair open in the wire between the ECM/
PCM (A40) and the brake pedal position switch. NOTE:
 Before checking the idle speed, check these items: – The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs.
– Ignition timing
– Spark plugs
– Air cleaner
– PCV system
 Apply the parking brake, and make sure the headlights are off.
1. Disconnect the evaporative emission (EVAP) canister purge valve connector (see step 5 on page
11-409).
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).
(cont’d)
Wire side of female terminals
Terminal side of female terminals
Is there continuity?
08/08/21 14:29:38 61SNR030_110_0309
ProCarManuals.com
DYNOMITE -2009-

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Idle speed should be:
K20Z2 engine:
M/T 700 50 rpm
A/T 800 50 rpm (in P or N)
K20Z3 engine: M/T 750 50 rpm
Idle speed should be:
K20Z2 engine: M/T 780 50 rpm
A/T 800 50 rpm (in P or N)
K20Z3 engine: M/T 750 50 rpm
Procedure
11-31011-310Idle Control System
Idle Speed Inspection (cont’d) ECM/PCM Idle Learn Procedure
4. 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.
5. Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air
conditioner off.
6. Let the engine idle for 1 minute with high electric load (A/C switch on, temperature set to max cool,
blower fan on high, and headlights on high beam).
NOTE: If the idle speed is not within specification,
dotheECM/PCMidlelearnprocedure(seepage
11-310). If the idle speed is still not within
specification, go to the symptom troubleshooting.
7. Reconnect the EVAP canister purge valve connector. The idle learn procedure must be done so the ECM/PCM
can learn the engine idle characteristics.
Do the idle learn procedure whenever you do any of
these actions:
 Replace the ECM/PCM.
 Reset the ECM/PCM.
 Update the ECM/PCM.
 Replace or clean the throttle body.
 Disassemble the engine or the transmission.
NOTE: Erasing DTCs with the HDS does not require you
to do the idle learn procedure.
1. Make sure all electrical items (A/C, audio, lights, etc.) are off.
2. Reset the ECM/PCM with the HDS.
3. Turn the ignition switch to ON (II), and wait 2 seconds.
4. 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, or until the
engine coolant temperature reaches 90 °C (194 °F).
5. Let the engine idle for about 5 minutes with the throttle fully closed.
NOTE: If the radiator fan comes on, do not include
its running time in the 5 minutes.
08/08/21 14:29:38 61SNR030_110_0310
ProCarManuals.com
DYNOMITE -2009-

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Idle speed should be:
K20Z2 engine:
M/T 700 50 rpm
A/T 800 50 rpm (in P or N)
K20Z3 engine: M/T 750 50 rpm
Idle speed should be:
K20Z2 engine: M/T 780 50 rpm
A/T 800 50 rpm (in P or N)
K20Z3 engine: M/T 750 50 rpm
Procedure
11-31011-310Idle Control System
Idle Speed Inspection (cont’d) ECM/PCM Idle Learn Procedure
4. 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.
5. Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air
conditioner off.
6. Let the engine idle for 1 minute with high electric load (A/C switch on, temperature set to max cool,
blower fan on high, and headlights on high beam).
NOTE: If the idle speed is not within specification,
dotheECM/PCMidlelearnprocedure(seepage
11-310). If the idle speed is still not within
specification, go to the symptom troubleshooting.
7. Reconnect the EVAP canister purge valve connector. The idle learn procedure must be done so the ECM/PCM
can learn the engine idle characteristics.
Do the idle learn procedure whenever you do any of
these actions:
 Replace the ECM/PCM.
 Reset the ECM/PCM.
 Update the ECM/PCM.
 Replace or clean the throttle body.
 Disassemble the engine or the transmission.
NOTE: Erasing DTCs with the HDS does not require you
to do the idle learn procedure.
1. Make sure all electrical items (A/C, audio, lights, etc.) are off.
2. Reset the ECM/PCM with the HDS.
3. Turn the ignition switch to ON (II), and wait 2 seconds.
4. 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, or until the
engine coolant temperature reaches 90 °C (194 °F).
5. Let the engine idle for about 5 minutes with the throttle fully closed.
NOTE: If the radiator fan comes on, do not include
its running time in the 5 minutes.
08/08/21 14:29:38 61SNR030_110_0310
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DYNOMITE -2009-

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Electronic Control System (cont’d)
PCM A/T Control System Electrical Connections
14-48 Automatic Transmission
System Description (cont’d)
41
23
41 24
23 4
40
29
26 2
27
20 21
10
89
35 19
16 17 18
36 39 40 44434230
29 32 16 1817
13 14 15
1211 789
654321
31
36 37 4044
42
27 28 29
33 3424 25
20 21 14 15
654
31 23
31
13
9
87
11 12 1514 13 17 18
16
22
21
20 25
32 35 34
33
3028
27
42 43 44
36 22
39
10
26
SHE
B24
RIGHT SUPP
B16
B40
SDNP
LEFT
F-CAN Transceiver
CANL
A37
CANH
A36
Terminal side of female terminals
A (44P) B (44P) C (44P) C44 C40 B1 B36
B15
ATPS
S
Dash-light Brightness Control Circuit
SG1C14
NC C43
VCC1 C13
B33
SG2 B17
NM B18
VCC2
TATF B27 B11
SHB SHA B10
B20
SHC
B26
SHD LSC
B25 B35
LSB
PG1
B28
ATPFWD
N BAT
D
PG2
ATPP
B13
DATA LINK CONNECTOR
R
CPU
LG1
ATPR
B14 SCS
IGNITION SWITCH
LG2
GAUGE CONTROL MODULE (TACH)
B9OP3SW OP2SW
B8 ATPRVS
B22 ATPD
B12
P
S
R
P
ND B21ATPN
BKSW
A40
BRAKE LIGHTS A31 A27SLS PCM
C36 IG1 B44
LSA
BATTERY
IG1
BRAKE PEDAL
POSITION SWITCH SHIFT LOCK
SOLENOID
TRANSMISSION
RANGE SWITCH A/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE A
A/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE B
A/T CLUTCH PRESSURE
CONTROL SOLENOID VALVE C
SHIFT SOLENOID
VALVE A
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE D
ATF
TEMPERATURE
SENSOR
OUTPUT SHAFT
(COUNTERSHAFT)
SPEED
SENSOR
INPUT SHAFT
(MAINSHAFT)
SPEED
SENSOR
2ND CLUTCH TRANSMISSION
FLUID PRESSURE SWITCH
3RD CLUTCH TRANSMISSION
FLUID PRESSURE SWITCH
A/T Gear Position Indicator
Driver Circuit
SHIFT
INDICATOR SHIFT SOLENOID
VALVE E
PADDLE SHIFTER (UPSHIFT SWITCH)
PADDLE SHIFTER (DOWNSHIFT SWITCH)
PCM Connector Terminal Locations
08/08/21 14:38:25 61SNR030_140_0050
ProCarManuals.com
DYNOMITE -2009-



14-268A/T Gear Position Indicator
Transmission Range Switch Replacement (cont’d)
A
C
B
6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft) 6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)A
7. Install the transmission range switch (A) gently on
the selector control shaft (B) while holding it in the
N position with the 2.0 mm (0.08 in.) blade (C).
8. Tighten the bolts on the transmission range switch while you continue to holding the N position. Do
not move the transmission range switch when
tightening the bolts. Remove the feeler gauge. 9. Check the connectors for rust, dirt, or oil, clean or
repair if necessary, then connect the connector
securely.
10. Turn the ignition switch to ON (II). Move the shift lever through all positions, and check the
transmission range switch synchronization with the
A/T gear position indicator.
11. Check that the engine will start with the shift lever in P and N, and will not start in any other shift lever
position.
12. Check that the back-up lights come on when the shift lever is in R.
13. Allow the front wheels to rotate freely, then start the engine, and check the shift lever operation.
14. Install the transmission range switch cover (A).
08/08/21 14:49:03 61SNR030_140_0270
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DYNOMITE -2009-

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14-282A/T Interlock System
Shift Lock System Circuit Troubleshooting (cont’d)
BKSW (LT GRN)
PCM CONNECTOR A (44P)
16. Monitor the Brake Switch in the Data List with the
HDS, and press the brake pedal.
Go to step 21.
If the brake lights come on, go to step 17. If
the brake lights do not work, repair the faulty brake
light circuit.
17. Turn the ignition switch to LOCK (0).
18. Jump the SCS line with the HDS.
19. Disconnect PCM connector A (44P). 20. Measure the voltage between PCM connector
terminal A40 and body ground when pressing the
brake pedal and when the brake pedal is released.
Reconnect all connectors, then update the
PCM if it does not have the latest software
(see page 11-227), or substitute a known- good PCM
(see page 11-7), then recheck. If the symptom goes
away with a known-good PCM, replace the original
PCM (see page 11-228).
Repair open in the wire between PCM
connector terminal A40 and the brake pedal
position switch.
21. Monitor the A/T P Switch in the Data List with the HDS with the shift lever in P.
Go to step 33.
Go to step 22.
Terminal side of female terminals
Is the Brake Switch ON?
Is there about battery voltage when pressing thebr ak e ped al , and no v ol t age w hen t he ped al i sreleased?
Is the A/ T P Switch ON?
08/08/21 14:50:07 61SNR030_140_0284
ProCarManuals.com
DYNOMITE -2009-




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Pedal Height
Standard pedal height (with carpet removed): M/T: 153 mm (6.02 in.)
A/T: 158 mm (6.22 in.) Brake Pedal Position Switch Clearance
19-6Conventional Brake Components
Brake Pedal and Brake Pedal Position Switch Adjustment
A
B
B C
90 ° A
15 N·m
(1.5 kgf·m,
11 lbf·ft)B
Lower
the pedal Raise
the pedal
A
B
0.7 mm (0.028 in.)
1. Turn the brake pedal position switch (A) counterclockwise, and pull it back until it is no
longer touching the brake pedal.
2. Pull back the carpet, and find the cutout in the insulation. Measure the pedal height (B) at the
middle of the left side center of the pedal pad (C) to
the floor without the insulation. 3. Loosen the pushrod locknut (A), and screw the
pushrod (B) in or out with pliers until the standard
pedal height from the floor is reached. After
adjustment, tighten the locknut firmly. Do not
adjust the pedal height with the pushrod pressed.
4. Lift up on the brake pedal by hand. Push in the brake pedal position switch until its plunger is fully
pressed (threaded end (A) touching the pad (B) on
the pedal arm). Turn the switch 45 ° clockwise to
lock it. The gap between the brake pedal position
switch and the pad is automatically adjusted to
0.7mm(0.028in.)bylockingtheswitch.Makesure
the brake lights go off when the pedal is released.
5. Check the brake pedal free play.
08/08/21 15:00:50 61SNR030_190_0006
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DYNOMITE -2009-