ACURA CSX 2006 Service Repair Manual

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)
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Electronic Control System (cont’d)
Lock-up Control
14-46Automatic Transmission
System Description (cont’d)
PCM
Engine RPM Signal Engine Coolant
Temperature
Sensor Signal Barometric
Pressure
Sensor
Signal
Input Shaft
(Mainshaft)
Speed Sensor Signal Output Shaft
(Countershaft)
Speed Sensor Signal
ATF Temperature
Sensor Signal Actual
Driving
Shift
Position
Transmission Range
Switch Signal
Correction
of ATF
Temperature
Sensor DataShifting Position
Control
Current Feedback
Accelerator Pedal
Position Sensor Signal
Throttle Position
Sensor Signal
Driving
Shift
Position
Information
 Engine Coolant
Temperature Control
Lock-up Control
Lock-up ON/OFF
Control
A/T Clutch Pressure
Control Solenoid
Valve A
Gradient Control
by Magnitude
Fail-safe Control
Lock-up Condition
Control
Master Target of
Controlling Current Shift Solenoid
Valve E
Shift solenoid valve E controls the hydraulic pressure to switch the lock-up shift valve and lock-up ON and OFF. When
the PCM actuates shift solenoid valve E and A/T clutch pressure control solenoid valve A to start lock-up. A/T clutch
pressure control solenoid valve A regulates and applies hydraulic pressure to the lock-up control valve to control the
amount of lock-up. The lock-up mechanism operates in D and S (2nd, 3rd, 4th, and 5th gears).
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Self-diagnosisOne Drive Cycle Detection Method:
Two Drive Cycle Detection Method:
Fail-safe Function
14-47
If the PCM detects the failure of a signal from a sensor, a switch, a solenoid valve, or from another control unit it stores
a Temporary DTC or a DTC. Depending on the failure, a DTC is stored in either the first or the second drive cycle. When
a DTC is stored, the PCM blinks the D indicator and/or turns on the malfunction indicator lamp (MIL) by a signal sent to
the gauge control module via F-CAN.  When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit, the
PCM stores a DTC for the failure and blinks the D indicator and/or turns on the MIL immediately.
 When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit in
the first drive cycle, the PCM stores a Temporary DTC. The D indicator and the MIL do not turns on at this time. If the
failure continues in the second drive cycle, the PCM stores a DTC and blinks the D indicator and/or turns on the MIL.
When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit, the
PCM ignores that signal and substitutes a pre-programmed value for them that allow the automatic transmission to
continue driving. This causes a DTC to be stored and the D indicator to blink and/or the MIL to come on.
(cont’d)
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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
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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
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Electronic Control System (cont’d)
PCM A/T Control System Inputs and Outputs (cont’d)
PCM CONNECTOR B (44P)Wire Color Terminal Name Description SignalTerminalNumber
14-50Automatic Transmission
System Description (cont’d)
A (44P)
B (44P) C (44P)
PCM Connector Terminal Locations




B9 BLU/WHT OP3SW (3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH) Detects 3rd clutch
transmission fluid pressure
switch signalWith ignition switch ON (II):
Without 3rd clutch pressure: about 5.0 V
With 3rd clutch pressure: about 0 V
B10 BLU/BLK SHA (SHIFT SOLENOID VALVE A) Drives shift solenoid
valve AWith engine running in R, D and S (in 1st, 4th, and
5th gears): about battery voltage
With engine running in P, N, D and S (in 2nd and 3rd
gears): about 0 V
B11 GRN/WHT SHB (SHIFT SOLENOID VALVE B) Drives shift solenoid
valve BWith engine running in P, R, N, D and S (in 1st and
2nd gears): about battery voltage
With engine running in D and S (in 3rd, 4th, and 5th
gears): about 0 V
B12 RED/BLK ATPN (TRANSMISSION RANGE SWITCH NEUTRAL) Detects transmission range
switch N position signalIn N: about 0 V
In any position other than N: more than 5.0 V
B13 BLU/BLK ATPP (TRANSMISSION RANGE SWITCH PARK) Detects transmission range
switch P position signalIn P: about 0 V
In any position other than P: more than 5.0 V
B14 WHT ATPR (TRANSMISSION RANGE SWITCH R) Detects transmission range
switch R position signalIn R: about 0 V
In any position other than R: more than 5.0 V
B15 RED ATPS (TRANSMISSION RANGE SWITCH S) Detects transmission range
switch S position signalIn S: about 0 V
In any position other than S: about battery voltage
B16 BLU/YEL SUPP (PADDLE SHIFTER (UPSHIFT SWITCH)) Detects paddle shifter
(upshift switch) signalIn S:
With paddle shifter (upshift switch) pressed:
about 0 V
With paddle shifter (upshift switch) released:
about battery voltage
B17 WHT/RED NM (INPUT SHAFT (MAINSHAFT) SPEED
SENSOR) Detects input shaft
(mainshaft) speed sensor
signalWith ignition switch ON (II): about 0 V
With engine idling in N: about 2.5 V
B18 YEL/BLU VCC2 (SENSOR VOLTAGE) Provides sensor reference voltageWith ignition switch ON (II): about 5.0 V
B20 GRN SHC (SHIFT SOLENOID VALVE C) Drives shift solenoid
valve CWith engine running in N, D and S (in 1st, 3rd, and
5th gears): about battery voltage
With engine running in P, R, D and S (in 2nd and 4th
gears): about 0 V
NOTE: Standard battery voltage is about 12 V.
Terminal side of female terminals
08/08/21 14:38:26 61SNR030_140_0052
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PCM CONNECTOR B (44P)
Wire Color Terminal Name Description Signal
TerminalNumber
14-51
B21 YEL/GRN ATPD (TRANSMISSION RANGE SWITCH D) Detects transmission range
switch D position signalIn D: about 0 V
In any position other than D: about battery voltage
B22 RED/WHT ATPRVS (TRANSMISSION RANGE SWITCH RVS) Detects transmission range
switch R position signalIn R: about 0 V
In any position other than R: about battery voltage
B24 YEL SHE (SHIFT SOLENOID VALVE E) Drives shift solenoid valve E With engine running in P and R: about battery
voltage
With engine running in N, D and S (in 1st gear):
about 0 V
B25 BLU/YEL LSC (A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE C) Drives A/T clutch pressure
control solenoid valve C
With ignition switch ON (II): current controlled
B26 GRN/RED SHD (SHIFT SOLENOID VALVE D) Drives shift solenoid
valve DWith engine running in D and S (in 2nd and 5th
gears): about battery voltage
With engine running in P, R, N, D and S (in 1st, 3rd,
and 4th gears): about 0 V
B27 RED/YEL ATFT (ATF TEMPERATURE SENSOR) Detects ATF temperature
sensor signalWith igniting switch ON (II): about 0.2 4.8 V
depending on ATF temperature
(about 1.8 V at operating temperature)
B28 BLU/YEL ATPFWD (TRANSMISSION RANGE SWITCH FWD) Detects transmission range
switch D and S positions
signalIn D and S: about 0 V
In any position other than D and S: about battery
voltage
B33 GRN/BLK SG2 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
NOTE: Standard battery voltage is about 12 V.
(cont’d)
08/08/21 14:38:26 61SNR030_140_0053
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Electronic Control System (cont’d)
PCM A/T Control System Inputs and Outputs (cont’d)
PCM CONNECTOR B (44P)Wire Color Terminal Name Description Signal
PCM CONNECTOR C (44P) Wire Color Terminal Name Description SignalTerminalNumber
Terminal Number
14-52Automatic Transmission
System Description (cont’d)
A (44P)
B (44P) C (44P)
PCM Connector Terminal Locations


B35 BRN LSB (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE B) Drives A/T clutch pressure
control solenoid valve B
With ignition switch ON (II): current controlled
B36 BLK PG1 (POWER GROUND) Ground circuit for PCM circuitLess than 1.0 V at all times
B40 BRN SDNP (PADDLE SHIFTER (DOWNSHIFT SWITCH)) Detects paddle shifter
(downshift switch) signalIn S:
With paddle shifter (downshift switch) pressed:
about 0 V
With paddle shifter (downshift switch)
released: about 5.0 V
B44 RED/BLK LSA (A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE A) Drives A/T clutch pressure
control solenoid valve A
With ignition switch ON (II): current controlled
NOTE: Standard battery voltage is about 12 V.
C13 YEL/RED VCC1 (SENSOR VOLTAGE) Provides sensor reference voltageWith ignition switch ON (II): about 5.0 V
C14 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
C36 BLK/GRN IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): about battery voltage
C40 BRN/YEL LG1 (LOGIC GROUND) Ground circuit for PCM circuitLess than 1.0 V at all times
C43 BLK/WHT NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED
SENSOR) Detects output shaft
(countershaft) speed sensor
signalWith ignition switch ON (II): pulses
With vehicle moving: about 5.0 V (pulses)
C44 BRN/YEL LG2 (LOGIC GROUND) Ground circuit for PCM circuitLess than 1.0 V at all times
NOTE: Standard battery voltage is about 12 V.
Terminal side of female terminals
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Hydraulic Controls
Valve Bodies
14-53
SHIFT SOLENOID
VALVE DSHIFT SOLENOID
VALVE E
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE A
SHIFT SOLENOID
VALVE B A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE B
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE C
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE A
SERVO BODY
REGULATOR
VALVE BODY
MAIN VALVE BODY
The valve body includes the main valve body, the regulator valve body, and the servo body. The ATF pump is driven
by splines on the end of the torque converter which is attached to the engine. Fluid flows through the regulator valve
to maintain specified pressure through the main valve body to the manual valve, directing pressure to the shift valves
and to each of the clutches via the shift solenoid valves. Shift solenoid valves A, B, C, D, and E are bolted on the servo
body. A/T clutch pressure control solenoid valves A, B, and C are mounted on the outside of the transmission housing.
(cont’d)
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Hydraulic Controls (cont’d)
Main Valve Body
Regulator Valve Body
14-54Automatic Transmission
System Description (cont’d)
MAIN VALVE BODY
SHIFT VALVE C
COOLER CHECK VALVE
LOCK-UP CONTROL VALVE
SHIFT VALVE E
SERVO CONTROL VALVE RELIEF VALVE
MANUAL VALVE
SHIFT VALVE B
SHIFT VALVE A
ATF PUMP DRIVEN GEAR
ATF PUMP DRIVE GEAR
TORQUE CONVERTER
CHECK VALVE LOCK-UP SHIFT VALVEREGULATOR VALVE BODY
3RD ACCUMULATOR
1ST ACCUMULATOR
REGULATOR VALVE
The main valve body contains the manual valve, shift valves A, B, C, and E, the relief valve, the lock-up control valve,
the cooler check valve, the servo control valve, the ATF pump drive gear, and the ATF pump driven gear. The primary
function of the main valve body is to switch fluid pressure on and off and to control hydraulic pressure going to the
hydraulic control system.
The regulator valve body contains the regulator valve, the torque converter check valve, the lock-up shift valve, and
the 1st and 3rd accumulators.
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