turn signal ACURA CSX 2006 Service Owner's Manual


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YES
NO
YES
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YES
NO
11-314Fuel Supply System
DTC Troubleshooting (cont’d)
FUEL TANK UNIT 4P CONNECTOR
SIGNAL
(ORN)
E
8.9 mm
(0.35 in.)
A
14. Check for continuity between fuel tank unit 4P
connector terminal No. 1 and body ground.
Repair short in the wire between the gauge
control module (tach) (signal line) and the fuel
gauge sending unit, then go to step 23.
Go to step 15.
15. Reconnect the gauge control module (tach) 36P connector.
16. Remove the fuel tank unit (see page 11-334).
17. Connect the fuel tank unit 4P connector.
18. Turn the ignition switch to ON (II).
19. Clear the DTC with the HDS. 20. Set the float (A) to the E position.
21. Check the fuel gauge.
Go to step 29.
Replace the gauge control module (tach)
(see page 22-277), then go to step 22.
22. Turn the ignition switch to LOCK (0).
23. Reconnect all connectors.
24. Install the parts in the reverse order of removal.
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see page 11-310).
28. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the gauge control module (tach) and
the fuel gauge sending unit, then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Wire side of female terminals
Is there continuity? Does the gauge move to the empty position?
Is DTC P0462 indicated?
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)Vehicle speed Inhibitor Reverse selection
13-73
System Description
With 5th/6th selected
With reverse selected
Select lever
Change lever Select lock
cam A
Select lock cam B Select lock return spring
Direction of reverse selection Locked position
Inhibitor OFF
At vehicle speeds of 20 km/h (12 mph) or more, the ECM, which monitors the signals from the output shaft
(countershaft) speed sensor, activates the r everse lockout solenoid, which pushes select lock cam B into the locked
position. As a result, the select lever ca nnot rotate to the reverse select position, making it impossible to engage
reverse gear. As the vehicle speed drops to 15 km/h (9 mph) or less, the ECM turns off the reverse lockout solenoid.
The select lock return spring pulls back select lock cam B, enabling the select lever to move freely so reverse gear can
be selected.
Above 20 km/h (12 mph) ON Not allowedBelow 15 km/h (9 mph) OFF Allowed
Ignition switch LOCK (0) OFF Allowed
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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
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Electronic Control System (cont’d)
Shift ControlPosition Gear Position Shift Solenoid Valve
ABCDE
14-40 Automatic Transmission
System Description (cont’d)
The PCM instantly determines which gear should be selected by various signals sent from sensors and switches, and
it actuates shift solenoid valves A, B, C, D, and E to control gear selection.
Shift solenoid valves are a normally closed type. Shift solenoid valve opens the port of shift solenoid valve pressure
leading to shift valves while shift solenoid valve is turned ON by the PCM, and closes the port when shift solenoid
valve is OFF.
The combination of driving signals to shift solenoid valves A, B, C, D, and E are shown in the table.
D and S Shifting from N OFF ON ON OFF OFF
Stays in 1st ON ON ON OFF OFF
Shifting gears between 1st and
2nd OFF ON ON OFF OFF
Stays in 2nd OFF ON OFF ON OFF or ON
Shifting gears between 2nd and
3rd OFFONONONOFForON
Stays in 3rd OFF OFF ON OFF OFF or ON
Shifting gears between 3rd and
4th OFF OFF OFF OFF OFF or ON
Stays in 4th ON OFF OFF OFF OFF or ON
Shifting gears between 4th and
5th ON OFF OFF ON OFF or ON
Stays in 5th ON OFF ON ON OFF or ON
N Neutral OFF ON ON OFF OFF
R Shifting from P and N OFF ON OFF OFF ON
Stays in reverse ON ON OFF OFF ON
Reverse inhibit control OFF OFF ON OFF OFF
P Park OFF ON OFF OFF ON
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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)
08/08/21 14:38:24 61SNR030_140_0049
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DTC P0335:
DTC P0339:
YES
NO
YES
NO YES
NO
YES
NO
14-81
Crankshaft Position (CKP) Sensor
No Signal
Crankshaft Position (CKP) Sensor
Intermittent Interruption
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine.
4. Check for Temporary DTCs or DTCs in the PGM-FI SYSTEM with the HDS.
Go to the indicated DTC’s troubleshooting in
the PGM-FI system.
 P0335 (see page 11-128)
 P0339 (see page 11-131) Go to step 5.
5. Check for Temporary DTCs or DTCs in the A/T SYSTEM with the HDS.
Go to step 6.
Intermittent failure, the system is OK at this
time. If any other Temporary DTCs or DTCs were
indicated, go to the indicated DTC’s
troubleshooting.
6. 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).
7. Start the engine, and wait for at least 2 minutes. 8. Check for Temporary DTCs or DTCs in the A/T
SYSTEM with the HDS.
Check for poor connections or loose
terminals at the PCM. If the PCM was updated,
substitute a known-good PCM (see page 11-7), then
go to step 7. If the PCM was substituted, go to step
1.
Go to step 9.
9. Monitor the OBD STATUS for P0335 or P0339 in the DTCs MENU with the HDS.
If the PCM was updated, troubleshooting is
complete. If the PCM was substituted, replace the
original PCM (see page 11-228). If any other
Temporary DTCs or DTCs were indicated in step 8,
go to the indicated DTC’s troubleshooting.
If the HDS indicates FAILED, check for poor
connections or loose terminals at the PCM. If the
PCM was updated, substitute a known-good PCM
(see page 11-7), then go to step 7. If the PCM was
substituted, go to step 1. If the HDS indicates NOT
COMPLETED, go to step 7.
Is DT C P0335 or P0339 ind icated in the PGM-F I SY ST EM?
Is DT C P0335 or P0339 ind icated in the A/ TSY ST EM? Is DT C P0335 or P0339 ind icated in the A/ T
SY ST EM?
Does the HDS ind icate PASSED?
08/08/21 14:39:47 61SNR030_140_0083
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DTC P0365:
DTC P0369:
YES
NO
YES
NO YES
NO
YES
NO
14-82Automatic Transmission
DTC Troubleshooting (cont’d)
Camshaft Position (CMP) Sensor
B No Signal
Camshaft Position (CMP) Sensor
B Intermittent Interruption
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine.
4. Check for Temporary DTCs or DTCs in the PGM-FI SYSTEM with the HDS.
Go to the indicated DTC’s troubleshooting in
the PGM-FI system.
 P0365 (see page 11-132)
 P0369 (see page 11-134) Go to step 5.
5. Check for Temporary DTCs or DTCs in the A/T SYSTEM with the HDS.
Go to step 6.
Intermittent failure, the system is OK at this
time. If any other Temporary DTCs or DTCs were
indicated, go to the indicated DTC’s
troubleshooting.
6. 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).
7. Start the engine, and wait for at least 2 minutes. 8. Check for Temporary DTCs or DTCs in the A/T
SYSTEM with the HDS.
Check for poor connections or loose
terminals at the PCM. If the PCM was updated,
substitute a known-good PCM (see page 11-7), then
go to step 7. If the PCM was substituted, go to step
1.
Go to step 9.
9. Monitor the OBD STATUS for P0365 or P0369 in the DTCs MENU with the HDS.
If the PCM was updated, troubleshooting is
complete. If the PCM was substituted, replace the
original PCM (see page 11-228). If any other
Temporary DTCs or DTCs were indicated in step 8,
go to the indicated DTC’s troubleshooting.
If the HDS indicates FAILED, check for poor
connections or loose terminals at the PCM. If the
PCM was updated, substitute a known-good PCM
(see page 11-7), then go to step 7. If the PCM was
substituted, go to step 1. If the HDS indicates NOT
COMPLETED, go to step 7.
Is DT C P0365 or P0369 ind icated in the PGM-F I SY ST EM?
Is DT C P0365 or P0369 ind icated in the A/ TSY ST EM? Is DT C P0365 or P0369 ind icated in the A/ T
SY ST EM?
Does the HDS ind icate PASSED?
08/08/21 14:39:48 61SNR030_140_0084
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DTC P0716:
DTC P0717:
YES
NO YES
NO
14-103
PCM CONNECTOR C (44P)
LG2 (BRN/YEL)
LG1 (BRN/YEL)
Problem in Input Shaft
(Mainshaft) Speed Sensor Circuit
Problem in Input Shaft
(Mainshaft) Speed Sensor Circuit (No Signal
Input)
NOTE:
 Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).
 This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the
transmission.
1. Check for proper input shaft (mainshaft) speed sensor installation (see page 14-227).
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Block the rear wheels and raise the front of the vehicle, make sure it is securely supported, and
allow the front wheels to rotate freely, or raise the
vehicle on a lift.
5. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with
the shift lever in D at speeds over 20 km/h (12 mph)
for at least 10 seconds. Slow down and stop the
wheels.
6. Monitor the OBD STATUS for P0716 or P0717 in the DTCs MENU with the HDS.
Go to step 7.
If the HDS indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals between the
input shaft (mainshaft) speed sensor and the PCM.
If the HDS indicates NOT COMPLETED, go to step 5. 7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (44P).
10. Check for continuity between PCM connector terminal C40 and body ground, and between PCM
connector terminal C44 and body ground.
Go to step 11.
Repair open in the wires between PCM
connector terminals C40, C44, and body ground
(G101) (see page 22-16), or repair poor body
ground (G 101), then go to step 26.
(cont’d)
Terminal side of female terminals
Does the HDS ind icate F AILED? Is there continuity?
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DTC P0721:
DTC P0722:
YES
NO YES
NO
14-111
PCM CONNECTOR C (44P)
LG2 (BRN/YEL)
LG1 (BRN/YEL)
Problem in Output Shaft
(Countershaft) Speed Sensor Circuit
Problem in Output Shaft
(Countershaft) Speed Sensor Circuit (No
Signal Input)
NOTE:
 Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).
 This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the
transmission.
1. Check for proper output shaft (countershaft) speed sensor installation (see page 14-227).
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to
rotate freely, or raise the vehicle on a lift.
5. Start the engine, disable the VSA by pressing the VSA OFF switch (if equipped), run the vehicle with
the shift lever in D and the engine speed 2,000 rpm
or higher, for at least 10 seconds. Slow down and
stop the wheels.
6. Monitor the OBD STATUS for P0721 or P0722 in the DTCs MENU with the HDS.
Go to step 7.
If the HDS indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals between the
output shaft (countershaft) speed sensor and the
PCM. If the HDS indicates NOT COMPLETED, go to
step 5. 7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (44P).
10. Check for continuity between PCM connector terminal C40 and body ground, and between PCM
connector terminal C44 and body ground.
Go to step 11.
Repair open in the wires between PCM
connector terminals C40, C44, and body ground
(G101) (see page 22-16), or repair poor body
ground (G 101), then go to step 26.
(cont’d)
Terminal side of female terminals
Does the HDS ind icate F AILED? Is there continuity?
08/08/21 14:41:07 61SNR030_140_0113
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14-347
10x1.25mm
44 N·m
(4.5 kgf·m, 33 lbf·ft)
A D
E C
F
G
A A
B
B: 0 7 mm (0 0.28 in.)
A
14. Install the three dowel pins (A) and a new gasket (B)on the torque converter housing (C).
15. Align the spring pin (D) of the selector control shaft (E) with the transmission housing groove (F) by
turning the control shaft. Do not squeeze the end of
the control shaft tips together when turning the
shaft. If the tips are squeezed together, it will cause
a faulty shift position signal or position due to the
play between the control shaft and the
transmission range switch.
16. Place the transmission housing (G) on the torque converter housing. Do not install the input shaft
(mainshaft) speed sensor and the output shaft
(countershaft) speed sensor before insta lling the
transmission housing on the torque converter
housing. 17. Use snap ring pliers to expand the snap ring of the
secondary shaft bearing. Then push the
transmission housing down to start the secondary
shaft bearing through the snap ring. Then release
the pliers. While rotating the reverse idler gear with
a screwdriver, push down the housing until it
bottoms and snap ring snaps in place in the
secondary shaft bearing snap ring groove.
18. Check that the secondary shaft bearing snap ring (A) is seated in the bearing and the housing groove,
and that the ring end gap (B) is correct.
19. Install the transmission housing mounting bolts along with the transmission hanger and the
harness clamp brackets, and tighten the 19 bolts in
at least two steps in a crisscross pattern.
(cont’d)
Replace.
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