2006 ACURA CSX torque

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Power Flow
P Position
N Position
14-32Automatic Transmission
System Description (cont’d)
TORQUE
CONVERTER
COUNTERSHAFT
MAINSHAFT
MAINSHAFT
IDLER GEAR
SECONDARY SHAFT
IDLER GEAR
IDLER SHAFT
IDLER GEAR IDLER SHAFT
SECONDARY SHAFT
COUNTERSHAFT
4TH GEAR
COUNTERSHAFT
REVERSE GEAR PARK GEAR
REVERSE
SELECTOR HUB
REVERSE
SELECTOR
Hydraulic pressure is not applied to the clutches. Power is not transmitted to the countershaft. The countershaft is
locked by the park pawl interlocking the park gear.
Engine power transmitted from the torque converter drives the mainshaft idler gear, the idler shaft idler gear, and the
secondary shaft idler gear, but hydraulic pressure is not applied to the clutches. Power is not transmitted to the
countershaft.
In this position, the position of the reverse selector differs according to whether the shift lever shifted from D or R: When shifted from D, the reverse selector engages with the c ountershaft 4th gear and the reverse selector hub, and
4th gear engages with the countershaft.
 When shifted from R, the reverse selector engages with the countershaft r everse gear and the reverse selectorhub,
and reverse gear engages with the countershaft.
08/08/21 14:38:17 61SNR030_140_0034
ProCarManuals.com
DYNOMITE -2009-

ÎIn 1st Gear
14-33
COUNTERSHAFT
1ST GEAR
SECONDARY SHAFT
1ST GEAR FINAL DRIVEN GEAR
1ST CLUTCH TORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
MAINSHAFT
IDLER GEAR
SECONDARY SHAFT
IDLER GEAR
IDLER SHAFT
IDLER GEAR IDLER SHAFT
SECONDARY SHAFT
 Hydraulic pressure is applied to the 1st clutch, then the 1st clutch engages the secondary shaft 1st gear with thesecondary shaft.
 The mainshaft idler gear drives the secondary shaft via the idler shaft idler gear and the secondary shaft idler gear.
 The secondary shaft 1st gear drives the countershaft 1st gear and the countershaft.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
(cont’d)
08/08/21 14:38:18 61SNR030_140_0035
ProCarManuals.com
DYNOMITE -2009-

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Power Flow (cont’d)
In 2nd Gear
14-34Automatic Transmission
System Description (cont’d)
2ND CLUTCH
COUNTERSHAFT
2ND GEAR
SECONDARY SHAFT
2ND GEAR FINAL DRIVEN GEARTORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
MAINSHAFT
IDLER GEAR
SECONDARY SHAFT
IDLER GEAR
IDLER SHAFT
IDLER GEAR IDLER SHAFT
SECONDARY SHAFT
 Hydraulic pressure is applied to the 2nd clutch, then the 2nd clutch engages the secondary shaft 2nd gear with thesecondary shaft.
 The mainshaft idler gear drives the secondary shaft via the idler shaft idler gear and the secondary shaft idler gear.
 The secondary shaft 2nd gear drives the countershaft 2nd gear and the countershaft.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
08/08/21 14:38:18 61SNR030_140_0036
ProCarManuals.com
DYNOMITE -2009-

ÎIn 3rd Gear
14-35
3RD CLUTCH
SECONDARY SHAFT
3RD GEAR COUNTERSHAFT
3RD GEAR
FINAL DRIVEN GEARTORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
MAINSHAFT
IDLER GEAR
SECONDARY SHAFT
IDLER GEAR
IDLER SHAFT
IDLER GEAR IDLER SHAFT
SECONDARY SHAFT
 Hydraulic pressure is applied to the 3rd clutch, then the 3rd clutch engages the secondary shaft 3rd gear with thesecondary shaft.
 The mainshaft idler gear drives the secondary shaft via the idler shaft idler gear and the secondary shaft idler gear.
 The secondary shaft 3rd gear drives the countershaft 3rd gear and the countershaft.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
(cont’d)
08/08/21 14:38:19 61SNR030_140_0037
ProCarManuals.com
DYNOMITE -2009-


Power Flow (cont’d)
In 4th Gear
14-36Automatic Transmission
System Description (cont’d)
COUNTERSHAFT
4TH GEAR
4TH CLUTCH
MAINSHAFT
4TH GEAR
REVERSE SELECTOR
REVERSE SELECTOR HUB
FINAL DRIVEN GEARTORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
 Hydraulic pressure is applied to the servo valve to engage the reverse selector with the c
ountershaft 4th gear and
the reverse selector hub while the shift lever is in forward range (D and S).
 Hydraulic pressure is also applied to the 4th clutch, then the 4th clutch engages the mainshaft 4th gear with the mainshaft.
 The mainshaft 4th gear drives the countershaft 4th gear and the countershaft.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
08/08/21 14:38:19 61SNR030_140_0038
ProCarManuals.com
DYNOMITE -2009-

In 5th Gear
14-37
MAINSHAFT
5TH GEAR
COUNTERSHAFT
5TH GEAR 5TH CLUTCH
FINAL DRIVEN GEARTORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
 Hydraulic pressure is applied to the 5th clutch, then the 5th clutch engages the mainshaft 5th gear with the
mainshaft.
 The mainshaft 5th gear drives the countershaft 5th gear and the countershaft.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
(cont’d)
08/08/21 14:38:20 61SNR030_140_0039
ProCarManuals.com
DYNOMITE -2009-


Power Flow (cont’d)
R Position
14-38Automatic Transmission
System Description (cont’d)
MAINSHAFT
REVERSE GEAR
REVERSE IDLER GEAR
COUNTERSHAFT
REVERSE GEAR4TH CLUTCH
REVERSE SELECTOR
REVERSE SELECTOR HUB
FINAL DRIVEN GEARTORQUE
CONVERTER
COUNTERSHAFT FINAL
DRIVE GEAR
MAINSHAFT
 Hydraulic pressure is applied to the servo valve to engage the reverse selector with the c
ountershaft reverse gear
and the reverse selector hub while the shift lever is in R.
 Hydraulic pressure is also applied to the 4th clutch, then the 4th clutch engages the mainshaft reverse gear with the mainshaft.
 The mainshaft reverse gear drives the c ountershaft reverse gear via the reverse idler gear.
 The rotational direction of the countershaft reverse gear is changed by the r everse idler gear.
 The countershaft r everse gear drives the countershaft via the reverse selector, which drives the reverse selector hub.
 Power is transmitted to the final drive gear, which in turn drives the final driven gear.
08/08/21 14:38:20 61SNR030_140_0040
ProCarManuals.com
DYNOMITE -2009-

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Electronic Control System
Functional Diagram
14-39
*1: ’06-07 models
*2: ’08-09 models Engine RPM Signal
Accelerator Pedal
Position Sensor Signal
Barometric Pressure
Sensor Signal
Manifold Absolute
Pressure Sensor Signal
ATF Temperature
Sensor Signal
Service Check SignalTransmission
Range
Switch
Signal
Brake Pedal Position
Switch Signal PGM-FI Control
System
PCM
A/T Control System Shift Control
 Ascending Control
 Descending
Control
 D-paddle Shift
Control

Clutch Pressure
Control
Lock-up Control
Shift Lock Control Shift Lock Solenoid
Vehicle Speed Signal
Data Link Connector Shift Solenoid Valve E
Shift Solenoid Valve D Shift Solenoid Valve C Shift Solenoid Valve B
Shift Solenoid Valve A
F-CAN Line
Automatic
Five-speed and
ReverseLock-up
ON/OFF
Lock-up
Conditions
Sequential
Sportshift
Control Gauge Control Module
(Tach) A/T Gear
Position Indicator
Engine Coolant
Temperature Sensor Signal
2ndClutchTransmission
Fluid Pressure Switch Signal ABS Modulator-Control
Unit Signal (via F-CAN line)*
Output Shaft (Countershaft)
Speed Sensor Signal
Paddle Shifter /
(Upshift/Downshift Switch) 3rdClutchTransmission
Fluid Pressure Switch Signal
1
VSA Modulator-Control
Unit Signal (via F-CAN line)*2
Input Shaft (Mainshaft)
Speed Sensor Signal
Grade Logic Control
Self-diagnosis/
Fail-safe Function
Communication and
Output Function
A/TClutchPressure
Control Solenoid Valve C A/TClutchPressure
Control Solenoid Valve B A/TClutchPressure
Control Solenoid Valve A
The electronic control system consists of the powertrain control module (PCM), sensors, and solenoid valves.
Shifting and lock-up are electronically controlled for comfortable driving under all conditions.
The PCM receives input signals from sensors, switches, and other control units, processes data, and outputs signals
for the engine control system and the A/T control system. The A/T control system includes shift control, grade logic
control, clutch pressure control, and lock-up control.
The PCM switches the shift solenoid valves and the A/T clutch pressure control solenoid valves ON and OFF to control
gear selection and torque converter clutch lock-up.
(cont’d)
08/08/21 14:38:21 61SNR030_140_0041
ProCarManuals.com
DYNOMITE -2009-