2006 ACURA CSX torque

SymptomProbable cause(s) Notes
14-15









Poor acceleration;
flares when
starting off in D, S,
and R; stall speed
high in D and S in
1st and 2nd
1.
2.
3.
4.
5.
6.Low ATF level
Shift cable broken or out of
adjustment
ATF pump worn or binding
Regulator valve stuck or spring
worn
ATF strainer clogged
Torque converter check valve
defective Check the ATF level, and check the ATF cooler
lines for leakage and loose connections. If
necessary, clean the ATF cooler lines.
Check for a loose shift cable at the shift lever and
the selector control lever.
Improper alignment of ATF pump and torque
converter housing may cause ATF pump seizure.
The symptoms are mostly an rpm-related ticking
noise or a high pitched squeak.
Check the ATF strainer for debris. If the ATF
strainer is clogged with particles of steel or
aluminum, inspect the ATF pump. If the ATF
pump is OK, find the damaged components that
caused the debris. If no cause for contamination
is found, replace the torque converter.
Poor acceleration;
flares when
starting off in D, S,
and R; stall speed
high when starting
off in 2nd in S 2nd clutch defective Check the 2nd clutch pressure.
Inspect the clutch piston, the clutch piston check
valve, and the O-rings. Check the spring retainer
and the retainer seal for wear, damage, and
peeling. Inspect the clearance between the clutch
end-plate and the top disc. If the clearance is out
of tolerance, inspect the clutch discs and the
plates for wear and damage. If the discs are worn
or damaged, replace them as a set. Inspect the
clutch wave-plate height. If the height is out of
tolerance, replace the wave-plate. If the discs and
the plates are OK, adjust the clearance with the
clutch end-plate.
Poor acceleration;
flares when
starting off in D, S,
and R; stall speed
high in R 1.
2.
Shift cable broken or out of
adjustment
4th clutch defective Check for a loose shift cable at the shift lever and
the selector control lever.
Check the 4th clutch pressure.
Inspect the clutch piston, the clutch piston check
valve, and the O-rings. Check the spring retainer
for wear and damage. Inspect the clearance
between the clutch end-plate and the top disc. If
the clearance is out of tolerance, inspect the
clutch discs and the plates for wear and damage.
If the discs are worn or damaged, replace them
as a set. Inspect the clutch wave-plate height. If
the height is out of tolerance, replace the wave-
plate. If the discs and the plates are OK, adjust
the clearance with the clutch end-plate.
(cont’d)
08/08/21 14:37:09 61SNR030_140_0017
ProCarManuals.com
DYNOMITE -2009-

SymptomProbable cause(s) Notes
14-16Automatic Transmission
Symptom Troubleshooting Index (cont’d)















Poor acceleration;
flares when
starting off in D, S,
and R; stall speed
lowinDandSin
1st and 2nd
1.
2.
3.
4.
5.Shift solenoid valve E defective
Torque converter one-way
clutch defective
Engine output low
Torque converter clutch piston
defective
Lock-up shift valve defective Check for a stored DTC, and check for loose
connectors.
Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
Replace the torque converter.
Check the lock-up shift valve in the regulator valve
body for free movement, and check the lock-up
shift valve spring for wear and damage.
Poor acceleration;
flares when
starting off in D, S,
and R; stall speed
low in R 1.
2.
3.
4.Torque converter one-way
clutch defective
Engine output low
Torque converter clutch piston
defective
Lock-up shift valve defective Replace the torque converter.
Check the lock-up shift valve in the regulator valve
body for free movement, and check the lock-up
shift valve spring for wear and damage.
Engine idle
vibration 1.
2.
3.
4.
5.
6.
7.Low ATF level
Shift solenoid valve E defective
Drive plate defective or
transmission misassembled
Engine output low
Torque converter clutch piston
defective
ATF pump worn or binding
Lock-up shift valve defective Check the ATF level, and check the ATF cooler lines
for leakage and loose connections. If necessary,
clean the ATF cooler lines.
Improper alignment of ATF pump and torque
converter housing may cause ATF pump seizure.
The symptoms are mostly an rpm-related ticking
noise or a high pitched squeak.
Inspect the ATF strainer for clogging with particles
of steel or aluminum. If the ATF strainer is clogged,
replace it, and clean the torque converter, cooler,
and lines.
Check for a stored DTC, and check for loose
connectors.
Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
Check for a misinstalled/damaged drive plate.
Check that the idle rpm in gear is the specified idle
speed. If the idle speed is correct, adjust the engine
and the transmission mounts.
Replace the torque converter.
Check the lock-up shift valve in the regulator valve
body for free movement, and check the lock-up
shift valve spring for wear and damage.
08/08/21 14:37:09 61SNR030_140_0018
ProCarManuals.com
DYNOMITE -2009-

SymptomProbable cause(s) Notes
14-17











Vehicle moves in N 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11. Excessive ATF
Foreign material in separator
plate orifice
Relief valve defective
1st clutch defective
2nd clutch defective
3rd clutch defective
4th clutch defective
5th clutch defective
Clearance between clutch
end-plate and top disc
incorrect
Needle bearing seized, worn,
or damaged
Thrust washer seized, worn,
or damaged Check for a clogged orifice in the separator plate. If
the orifice is clogged, remove it and clean the
separator plate orifice.
Check the ATF level, and drain the ATF if it is over-
filled.
Check the ATF strainer for debris. If the ATF
strainer is clogged with particles of steel or
aluminum, inspect the ATF pump. If the ATF pump
is OK, find the damaged components that caused
the debris. If no cause for contamination is found,
replace the torque converter.
Check the 1st, 2nd, 3rd, 4th, and 5th clutch
pressures.
Check the relief valve in the main valve body for
free movement, and check the relief valve spring
for wear and damage.
Inspect the clutch piston, the clutch piston check
valve, and the O-rings. Check the spring retainer
and the retainer seal (for 1st, 2nd, and 3rd clutch
only) for wear, damage, and peeling. Inspect the
clearance between the clutch end-plate and the top
disc. If the clearance is out of tolerance, inspect the
clutch discs and the plates for wear and damage. If
the discs are worn or damaged, replace them as a
set. Inspect the clutch wave-plate height. If the
height is out of tolerance, replace the wave-plate. If
the discs and the plates are OK, adjust the
clearance with the clutch end-plate.
Inspect the 1st clutch feed pipe. If the 1st clutch
feed pipe is scored, replace the end cover.
Inspect the 3rd clutch feed pipe. If the 3rd clutch
feed pipe is scored, replace it and the O-ring under
the feed pipe guide.
Replace the secondary shaft if the bushing for the
1st or the 3rd clutch feed pipe is loose or damaged.
Inspect the 5th clutch feed pipe. If the 5th clutch
feed pipe is scored, replace it and the O-ring under
the feed pipe guide.
Replace the mainshaft if the bushing for the 5th
clutch feed pipe is loose or damaged.
(cont’d)
08/08/21 14:37:09 61SNR030_140_0019
ProCarManuals.com
DYNOMITE -2009-

SymptomProbable cause(s) Notes
14-23













Excessive shock or
flares on 4-5
upshift or 5-4
downshift
1.
2.
3.
4.
5.
6.
7.A/T clutch pressure control
solenoid valve B defective
A/T clutch pressure control
solenoid valve C defective
Foreign material in separator
plate orifice
4th/reverse accumulator defective
5th accumulator defective
4th clutch defective
5th clutch defective Check for a stored DTC, and check for loose
connectors.
Inspect the A/T clutch pressure control solenoid
valve filter/gasket and the O-rings for wear and
damage, and inspect the solenoid valves for
seizure.
Check for a clogged orifice in the separator plate.
If the orifice is clogged, remove it and clean the
separator plate orifice.
Check the 4th and the 5th clutch pressures.
Inspect the clutch piston, the clutch piston check
valve, and the O-rings. Check the spring retainer
for wear and damage. Inspect the clearance
between the clutch end-plate and the top disc. If
the clearance is out of tolerance, inspect the
clutch discs and the plates for wear and damage.
If the discs are worn or damaged, replace them
as a set. Inspect the clutch wave-plate height. If
the height is out of tolerance, replace the wave-
plate. If the discs and the plates are OK, adjust
the clearance with the clutch end-plate.
Inspect the 5th clutch feed pipe. If the 5th clutch
feed pipe is scored, replace it and the O-ring
under the feed pipe guide.
Replace the mainshaft if the bushing for the 5th
clutch feed pipe is loose or damaged.
Check the 4th and the 5th accumulator pistons,
the O-rings, and the springs in the servo body for
wear and damage.
Noise from
transmission in all
shift lever
positions 1.
2.
ATF pump worn or binding
Mainshaft bearing, countershaft
bearing, or secondary shaft
bearing defective Improper alignment of ATF pump and torque
converter housing may cause ATF pump seizure.
The symptoms are mostly an rpm-related ticking
noise or a high pitched squeak.
Be careful not to damage the torque converter
housing when replacing the main ball bearing.
You may also damage the ATF pump when you
torque down the main valve body. This will result
in ATF pump seizure if not detected. Use the
proper tools.
Install the main seal flush with the torque
converter housing. If you push it into the torque
converter housing until it bottoms out, it will
block the fluid return passage and result in
damage.
Inspect the ATF strainer is clogged with particles
of steel or aluminum. If the ATF strainer is
clogged, replace it, and clean the torque
converter, cooler, and lines.
Inspect the mainshaft, the countershaft, and the
secondary shaft for wear or damage.
(cont’d)
08/08/21 14:37:10 61SNR030_140_0025
ProCarManuals.com
DYNOMITE -2009-

SymptomProbable cause(s) Notes
14-24Automatic Transmission
Symptom Troubleshooting Index (cont’d)













Vehicle does not
accelerate above
50 km/h (31 mph)
Torque converter one-way clutch
defective
Replace the torque converter.
Vibrationinall
shift lever
positions Drive plate defective or transmission
misassembled
Check for a misinstalled/damaged drive plate.
Check that the idle rpm in gear is the specified
idle speed. If the idle speed is correct, adjust the
engine and the transmission mounts.
Shift lever does
not operate
smoothly 1.
2.
3.Transmission range switch
defective or out of adjustment
Shift cable broken or out of
adjustment
Connection between the shift
cable and transmission or body is
worn Check for a stored DTC, and check for loose
connectors.
Inspect the transmission range switch for
operation.
Check for a loose shift cable at the shift lever and
the selector control lever.
Transmission does
not shift into P 1.
2.
3.Shift cable broken or out of
adjustment
Connection between the shift
cable and transmission or body is
worn
Park mechanism defective Check for a loose shift cable at the shift lever and
the selector control lever.
Check the park pawl spring installation and the
park lever spring installation. If installation is
incorrect, install the spring correctly. Make sure
that the park lever stop is not installed upside
down. Check the distance between the park pawl
shaft and the park lever roller pin. If the distance
is out of tolerance, select and install the
appropriate park lever stop.
Torque converter
clutch does not
disengage 1.
2.
3.
4.
5.Shift solenoid valve E defective
A/T clutch pressure control
solenoid valve A defective
Torque converter clutch piston
defective
Lock-up shift valve defective
Lock-up control valve defective Check for a stored DTC, and check for loose
connectors.
Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
Inspect the A/T clutch pressure control solenoid
valve filter/gasket and the O-rings for wear and
damage, and inspect the solenoid valves for
seizure.
Replace the torque converter.
Check the lock-up control valve in the main valve
body for free movement, and check the lock-up
control valve spring for wear and damage.
Check the lock-up shift valve in the regulator
valve body for free movement, and check the
lock-up shift valve spring for wear and damage.
08/08/21 14:37:10 61SNR030_140_0026
ProCarManuals.com
DYNOMITE -2009-

SymptomProbable cause(s) Notes
14-25
















Torque converter
clutch does not
operate smoothly
1.
2.
3.
4.
5.
6.Shift solenoid valve E defective
A/T clutch pressure control
solenoid valve A defective
Torque converter clutch piston
defective
Torque converter check valve
defective
Lock-up shift valve defective
Lock-up control valve defective Check for a stored DTC, and check for loose
connectors.
Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
Inspect the A/T clutch pressure control solenoid
valve filter/gasket and the O-rings for wear and
damage, and inspect the solenoid valves for
seizure.
Replace the torque converter.
Check the lock-up control valve in the main valve
body for free movement, and check the lock-up
control valve spring for wear and damage.
Check the lock-up shift valve in the regulator
valve body for free movement, and check the
lock-up shift valve spring for wear and damage.
Torque converter
clutch does not
engage 1.
2.
3.
4.
5.
6.
7.
8.Shift solenoid valve E defective
A/T clutch pressure control
solenoid valve A defective
Input shaft (mainshaft) speed
sensor defective
Output shaft (countershaft) speed
sensor defective
Torque converter clutch piston
defective
Torque converter check valve
defective
Lock-up shift valve defective
Lock-up control valve defective Check for a stored DTC, and check for loose
connectors.
Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
Inspect the A/T clutch pressure control solenoid
valve filter/gasket and the O-rings for wear and
damage, and inspect the solenoid valves for
seizure.
Replace the torque converter.
Check the input shaft (mainshaft) speed sensor
and the output shaft (countershaft) speed sensor
installation.
Check the lock-up control valve in the main valve
body for free movement, and check the lock-up
control valve spring for wear and damage.
Check the lock-up shift valve in the regulator
valve body for free movement, and check the
lock-up shift valve spring for wear and damage.
A/T gear position
indicator does not
indicate shift lever
positions 1.
2.
3.Transmission range switch
defective or out of adjustment
Shift cable broken or out of
adjustment
Connection between the shift
cable and transmission or body is
worn Check for a stored DTC, and check for loose
connectors.
Inspect the transmission range switch operation.
Check for a loose shift cable at the shift lever and
the selector control lever.
(cont’d)
08/08/21 14:37:11 61SNR030_140_0027
ProCarManuals.com
DYNOMITE -2009-

(#'

)
General Operation
Torque Converter, Gears, and Clutches
Electronic Control
Hydraulic Control
Shift Control Mechanism
Lock-up Mechanism
14-28Automatic Transmission
System Description
The automatic transmission is a combination of a three-element torque converter and triple-shaft electronically
controlled unit which provides five speeds forward and one in reverse. The entire unit is positioned in line with the
engine.
The torque converter consists of a pump, turbine, and stator assembly in a single unit. The converter housing (pump)
is connected to the engine crankshaft and turns as the engine turns. Around the outside of the torque converter is a
ring gear which meshes with the starter drive gear when the engine is being started. The entire torque converter
assembly serves as a flywheel while transmitting power to the transmission mainshaft. The transmission has three
parallel shafts; the mainshaft, the countershaft, and the secondary shaft. The mainshaft is in line with the engine
crankshaft, and includes the 4th and 5th clutches, and gears for 5th, 4th, reverse, and idler. The mainshaft reverse gear
is integral with the mainshaft 4th gear. The countershaft includes the gears for 1st, 2nd, 3rd, 4th, 5th, reverse, park,
and the final drive. The final drive gear is integral with the countershaft. The countershaft 4th gear and the
countershaft r
everse gear can be locked to the countershaft providing 4th or r everse gear, depending on which way
the selector is moved. The secondary shaft includes the 1st, 2nd, and 3rd clutches, and gears for 1st, 2nd, 3rd, and
idler. The idler gear shaft is located between the mainshaft and the secondary shaft, and the idler gear transmits
power between the mainshaft and the secondary shaft. The gears on the mainshaft and the secondary shaft are in
constant mesh with those on the countershaft. When certain combinations of gears in the transmission are engaged
by the clutches, power is transmitted through the mainshaft, then to the secondary shaft to the countershaft, or
through the mainshaft to the countershaft to provide drive.
The electronic control system consists of the powertrain control module (PCM), sensors, and shift solenoid valves.
Shifting and lock-up are electronically controlled for comfortable driving under all conditions. The PCM is located in
the engine compartment.
The valve bodies include the main valve body, the regulator valve body, and the servo body. They are bolted to the
torque converter housing. 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, and the ATF pump gears. The regulator valve
body contains the regulator valve, the torque converter check valve, the lock-up shift valve, and the 1st and 3rd
accumulators. The servo body contains the servo valve, shift valve D, the accumulators for 2nd, 4th, and 5th, and shift
solenoid valves A, B, C, D, and E. Fluid from the regulator passes through the manual valve to the various control
valves. The 1st, 3rd, and 5th clutches receive fluid from their respective feed pipes, and the 2nd and 4th clutches
receive fluid from the internal hydraulic circuit.
To shift gears, the PCM controls shift solenoid valves A, B, C, D, and E, and A/T clutch pressure control solenoid valves
A, B, and C, while receiving input signals from various sensors and switches located throughout the vehicle. The shift
solenoid valves shift the positions of the shift valves to switch the port leading hydraulic pressure to the clutch. A/T
clutch pressure control solenoid valves A, B, and C regulate their respective pressure, and pressurize the clutches to
engage them and their corresponding gears. The pressure of the A/T clutch pressure control solenoid valves also
applies to the shift valves to switch the port.
The lock-up mechanism operates in D (2nd, 3rd, 4th, and 5th gears). The pressurized fluid is drained from the back of
the torque converter through a fluid passage, causing the torque converter clutch piston to be held against the torque
converter cover. As this takes place, the mainshaft rotates at the same speed as the engine crankshaft. Together with
the hydraulic control, the PCM optimizes the timing and volume of the lock-up mechanism. When shift solenoid valve
E is turned on by the PCM, shift solenoid valve E pressure switches the lock-up shift valve on and off. A/T clutch
pressure control solenoid valve A and the lock-up control valve control the degree of lock-up.
08/08/21 14:37:16 61SNR030_140_0030
ProCarManuals.com
DYNOMITE -2009-

Î
(#'

)
Clutches and Gears
14-30Automatic Transmission
System Description (cont’d)
REVERSE
IDLER GEAR
5TH CLUTCH
3RD
CLUTCH MAINSHAFT
5TH GEAR
COUNTERSHAFT
REVERSE GEAR
REVERSE SELECTOR
HUB
REVERSE
SELECTORCOUNTERSHAFT
4TH GEAR COUNTERSHAFT
2ND GEAR
2ND CLUTCH
SECONDARY SHAFT
1ST GEAR
SECONDARY SHAFT
IDLER GEAR
FINAL DRIVEN GEARTORQUE CONVERTER
FINAL
DRIVE GEAR
1ST
CLUTCH
PARK GEAR
SECONDARY
SHAFT
2ND GEAR
DIFFERENTIAL ASSEMBLY RING GEAR
MAINSHAFT
REVERSE GEAR
IDLER SHAFT
IDLER GEAR SECONDARY SHAFT
3RD GEARCOUNTERSHAFT 3RD GEAR
COUNTERSHAFT
1ST GEAR
MAINSHAFT
IDLER GEAR
MAINSHAFT
4TH GEAR
4TH CLUTCH
COUNTERSHAFT
5TH GEAR
The five-speed automatic transmission uses hydraulically-actuated clutches to engage or disengage the transmission
gears. When hydraulic pressure is introduced into the clutch drum, the clutch piston moves. This presses the friction
discs and the steel plates together, locking them so they do not slip. Power is then transmitted through the engaged
clutch pack to its hub-mounted gear. Likewise, when the hydraulic pressure is bled from the clutch pack, the piston
releases the friction discs and the steel plates, and they are free to slide past each other. This allows the gear to spin
independently on its shaft, transmitting no power.
08/08/21 14:38:17 61SNR030_140_0032
ProCarManuals.com
DYNOMITE -2009-