2006 ACURA CSX ignition


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How to Check for DTCs with the SCS Mode
(retrieving the flash codes)
14-4Automatic Transmission
General Troubleshooting Information (cont’d)
A
B
AOFF
Short blinks (five)
OFF
ON
ON
5=15
Example: DTC P0717 (15) Short blinks (five)
Example: DTC P0705 (5)
10
Long blink (one)
NOTE: The preferred method is to use the HDS to
retrieve the DTCs.
When the PCM senses an abnormality in the input or
output system, the D indicator (A) in the gauge control
module (tach) (B) will usually blink.
When the D indicator has been reported on, connect the
HDS to the DLC (A) located under the driver’s side of the
dashboard. Turn the ignition switch to ON (II), select
SCS mode, then the D indicator will indicate (flash) the
DTC. If the D indicator and the MIL come on at the same time,
or if a driveability problem is suspected, follow this
procedure:
1. Connect the HDS to the DLC. (See the HDS user’s manual for specific instructions.)
2. Turn the ignition switch to ON (II). Make sure the HDS communicates with the PCM. If it does not, go
to the DLC circuit troubleshooting (see page
11-204).
3. Select SCS mode, then observe the D indicator in the gauge control module (tach). Codes 1 through 9
are indicated by individual short blinks. Codes 10
and above are indicated by a series of long and
short blinks. One long blink equals 10 short blinks.
Add the long and short blinks together to determine
the code.
4. Record all fuel and emissions DTCs and A/T DTCs.
5. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC.
6. Clear the DTC and the data.
7. Drive the vehicle for several minutes under the
same conditions as those indicated by the freeze
data, and then recheck for DTCs. If the A/T DTC
returns, go to the indicated DTC’s troubleshooting.
If the DTC does not return, there was an
intermittent problem within the circuit. Make sure
all pins and terminals in the circuit are tight.
08/08/21 14:37:05 61SNR030_140_0006
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How to Troubleshoot Circuits at the PCM
Connectors
14-5
A
D E
B
A
C A
D
B
C
A
NOTE: The PCM overwrites data and monitors the EVAP
system for about 30 minutes after the ignition switch is
turned to LOCK (0) or ACC (I). Jumping the SCS line
after turning the ignition switch to LOCK (0) or ACC (I)
cancels this function. Disconnecting the PCM during
this function, without jumping the SCS line first, can
damage the PCM.
1. Make sure the ignition switch is turned to LOCK (0), then jump the SCS line with the HDS.
2. Remove the cover (A).
3. Lift up the under-hood fuse/relay box (D).
4. Remove the coolant reservoir (E). Disconnect PCM connectors A, B, and C, and probe the terminals
from the terminal side of the connectors.
NOTE: PCM connectors A, B, and C have symbols
(A= , B= , C= ) embossed on them for
identification. 5. When diagnosis/troubleshooting is done at the
PCM connector, use the terminal test port (A) above
the terminal you need to check.
6. Connect one side of the patch cord’s terminals (A) to a commercially available digital multimeter (B),
and connect the other side cord’s terminals (C) to a
commercially available banana jack (Pomona
Electronics Tool No. 3563 or equivalent) (D).
7. Gently contact the pin probe (male) at the terminal test port from the terminal side. Do not force the
tips into the terminals.
 For accurate results, always use the pin probe (male).
 To prevent damage to the connector terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.
 Do not puncture the insulation on a wire. Punctures can cause poor or intermittent
electrical connections.
(cont’d)
08/08/21 14:37:07 61SNR030_140_0007
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Clear A/T DTCs Procedure
OBD StatusHow to End a Troubleshooting Session
(required after any troubleshooting)
Failure Reproduction Technique
14-6Automatic Transmission
General Troubleshooting Information (cont’d)
A
1. Connect the HDS to the DLC (A) located under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting
(see page 11-204).
4. Clear the DTC(s) on the HDS screen.
The OBD status shows the current system status of
each DTC and all of the parameters. This function is
used to see if the technician’s repair was successfully
completed. The results of diagnostic tests for the DTC
are displayed as:  PASSED: The on-board diagnosis is successfully completed.
 FAILED: The on-board diagnosis has finished but failed.
 NOT COMPLETED: The on-board diagnosis was running but is out of the enable conditions of the DTC. NOTE: Reset the PCM with the HDS while the engine is
stopped.
1. Turn the ignition switch to LOCK (0).
2. Turn the ignition switch to ON (II), and wait for 30 seconds.
3. Turn the ignition switch to LOCK (0), and disconnect the HDS from the DLC.
4. Do the PCM idle learn procedure (see page 11-310).
5. Start the engine with the shift lever in P or N, and warm it up to normal operating temperature (the
radiator fan comes on).
6. To verify that the problem is repaired, test-drive the vehicle for several minutes at speeds over 50 km/h
(31 mph) or under the same conditions as those
indicated by the freeze data.
Make sure to follow these points while the vehicle is
raised on a lift for the test-drive.  Disable the VSA by pressing the VSA OFF switch.
 VSA DTC’s may come on when test-driving on a lift. If the VSA DTC(s) come on, clear the DTC(s) with the
HDS.
08/08/21 14:37:07 61SNR030_140_0008
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Symptom Probable cause(s) Notes
14-11
Symptom Troubleshooting Index










 








 




When you turn the
ignition switch to
ON (II), the D
indicator comes on
and stays on in all
shift lever
positions, or it
never comes on at
all
F-CAN communication line error
Gauge control module (tach)
defective
PCM defective
Check the F-CAN communication line for a DTC
(see page 22-265).
Check the A/T gear position indicator drive circuit
in the gauge control module (tach) by using the
gauge control module self-diagnostic function
(see page 22-242).
A/T gear position
indicator does not
come on while the
shift lever is in that
position F-CAN communication line error
Gauge control module (tach)
defective
PCM defective
Transmission range switch
defective
Shift cable broken or out of
adjustment
Connection between the shift cable
and transmission or body is worn Check the F-CAN communication line for a DTC
(see page 22-265).
Check the A/T gear position indicator drive circuit
in the gauge control module (tach) by using the
gauge control module self-diagnostic function
(see page 22-242).
Inspect the transmission range switch (see page
14-265).
Check for a loose shift cable at the shift lever and
the selector control lever.
Shift indicator
does not work F-CAN communication line error
Gauge control module (tach)
defective
PCM defective
Transmission range switch
defective
Shift cable broken or out of
adjustment
Connection between the shift cable
and transmission or body is worn Check the F-CAN communication line for a DTC
(see page 22-265).
Check the F-CAN communication line by using
the gauge control module self-diagnostic
function (see page 22-243).
Check the A/T gear position indicator drive circuit
in the gauge control module (tach) by using the
gauge control module self-diagnostic function
(see page 22-242).
Inspect the transmission range switch (see page
14-265).
Check for a loose shift cable at the shift lever and
the selector control lever.
When you press
the paddle shifter (upshift switch)
in S, the
transmission does
not upshift gears A problem in the paddle shifter
(upshift switch) circuit
Check the paddle shifter (upshift switch) circuit
(see page 14-270).
When you press
the paddle shifter (downshift
switch) in S, the
transmission does
not downshift
gears A problem in the paddle shifter
(downshift switch) circuit
Check the paddle shifter (downshift switch)
circuit (see page 14-273).
(cont’d)
08/08/21 14:37:08 61SNR030_140_0013
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SymptomProbable cause(s) Notes
14-12Automatic Transmission
Symptom Troubleshooting Index (cont’d)

















 

Shift lever cannot
be moved from P
while pressing on
the brake pedal
Accelerator pedal position sensor
circuit
Accelerator pedal position sensor
defective
Brake pedal position switch circuit
Brake pedal position switch
defective
Shift lock solenoid defective
Shift lock solenoid control circuit
Shift lock mechanism defective
Throttle body defective
Transmission range switch ATPP
switch stuck OFF
Transmission range switch ATPP
switch line opened Inspect the APP Sensor signal (see page 11-268).
Troubleshoot the shift lock system circuit
(see page 14-280).
Test the shift lock solenoid (see page 14-287).
Inspect the transmission range switch (see page
14-265).
Ignition switch
cannot be moved
from ACCESSORY
(I) to LOCK (0) (key
is pushed in, the
shift lever in P) Interlock control system circuit
Key interlock solenoid stuck ON
Park pin switch stuck OFF
Transmission range switch
Troubleshoot the key interlock system circuit
(see page 14-285).
Inspect the transmission range switch (see page
14-265).
HDS does not
communicate with
the PCM or the
vehicle DLC circuit error Troubleshoot the DLC circuit (see page 11-204).
08/08/21 14:37:08 61SNR030_140_0014
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ÎClutch Pressure Control
14-45
PCM
Engine RPM Signal
Engine Coolant
Temperature
Sensor Signal Input Shaft
(Mainshaft)
Speed Sensor Signal
Output Shaft
(Countershaft)
Speed Sensor Signal
ATF Temperature
Sensor Signal Actual
Driving Shift
Position
Correction of Data
Correction of Engine
Coolant Temperature
Sensor Data
Manifold Absolute
Pressure Sensor Signal
3rd Clutch
Transmission Fluid
Pressure Switch Signal 2nd Clutch
Transmission Fluid
Pressure Switch Signal
Correction of ATF
Temperature Sensor
Signal Data
Correction of
Hydraulic Pressure
Applying Timing
Correction of Engine
Torque Signal Data Master Target of
Controlling Current
Decision of
Shifting Mode
Ignition Timing
Requirement
PGM-FI
Control
System
Current
Feedback A/T Clutch Pressure
Control Solenoid
Valves A, B, and C
PGM-FI
Control
System
Throttle Position
Sensor Signal
Barometric Pressure
Sensor Signal
The PCM actuates A/T clutch pressure control solenoid valves A, B, and C to control the clutch pressure. When shifting
between lower and higher gears, the clutch pressure regulated by A/T clutch pressure control solenoid valves A, B,
and C engages and disengages the clutch smoothly.
The PCM receives input signals from the various sensors and the switches, processes data, and outputs current to A/T
clutch pressure control solenoid valves A, B, and C.
(cont’d)
08/08/21 14:38:23 61SNR030_140_0047
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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
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PCM A/T Control System Inputs and Outputs
PCM CONNECTOR A (44P) Wire Color Terminal Name Description Signal
PCM CONNECTOR B (44P) Wire Color Terminal Name Description SignalTerminalNumber
Terminal Number
14-49
A (44P) B (44P) C (44P)
PCM Connector Terminal Locations
A27 PNK SLS (SHIFT LOCK
SOLENOID) Drives shift lock solenoid With ignition switch ON (II), in P, brake pedal
pressed, and accelerator released: about battery
voltage
A31 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With service check signal shorted using HDS: about
0V
With service check signal opened: about 5.0 V
A36 WHT CANH (CAN COMMUNICATION SIGNAL
HIGH) Sends and receives
communication signal
With ignition switch ON (II): about 2.5 V (pulses)
A37 RED CANL (CAN COMMUNICATION SIGNAL
LOW) Sends and receives
communication signal
With ignition switch ON (II): about 2.5 V (pulses)
A40 LT GRN BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal
position switch signalWith brake pedal pressed: about battery voltage
With Brake pedal released: about 0 V
NOTE: Standard battery voltage is about 12 V.


B1 BLK/RED
BLKPG2 (POWER GROUND) Ground circuit for PCM
circuitLess than 1.0 V at all times
B8 BLU/RED OP2SW (2ND CLUTCH TRANSMISSION FLUID
PRESSURE SWITCH) Detects 2nd clutch
transmission fluid pressure
switch signalWith ignition switch ON (II):
Without 2nd clutch pressure: about 5.0 V
With 2nd clutch pressure: about 0 V
NOTE: Standard battery voltage is about 12 V.
*1: ’06 model
*2: ’07-09 models
(cont’d)
*1
*2
Terminal side of female terminals
08/08/21 14:38:26 61SNR030_140_0051
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