1998 ACURA INTEGRA valve

Troubleshooting Flowchart - Shaft Control System
NOTE: Do not continue with this troubleshootlng until the causesof any other DTCS have been corrected.
Chock foi Another Code:Check whether the OBD ll scantool indicates another code.
Psrtorm tho Tioubla3hootingFlowch.rt fo. th. indicatodCodcl.l.Rechsck tor code P0730 attoltroublolhooting.
Does the OBD ll scan toolindicate anothor code?
Tost 1st, 2nd, 3rd, and 4th ClutchProssuro:Measure the 1st,2nd,3rd, and4th clutch pressure (see page 14-
ls each clutch pressure withinthe service limit?R.p!ir lhG hydraulic ry3t.m ranac.3!.ry l3€e pago 1+991.
Roplace the Shilt ContiolSolonoid Valve A/B Assombly,thon Recheck:1. Turn the ignition switch OFFand reset the TCM memoryby removing the BACK UPfuse in the under-hood fuse/relay box for more than '10
seconds.2. Orive the vehicle at over 12mph (20 km/h) in lst,2nd,3rd, and 4th gear for morethan 30 seconds in E posi-tion.3, Recheck for code P730 (41).
Does the OBD llscan toolorthe E indicator light indicatecode P0730 (4'1)?Tho systom is OX etthi3 timo.
Poitible C.uBe
F""lty "hlft ".^t..t ",/"t".

Replacement
(.
L
Lock-up Control Solenoid Valve A/B Assembly
NOTE: Lock-up control solenoid valves A and B must be
removed/replaced as an assembly.
L Disconnect 2P connector from the lock-up control
solenoid valve Ay'B assembly.
2. Measure the resistance between the No. 2 terminal
{solenoid valve A) of the lock-up control solenoid
valve connector and body ground, and between the
No. 1 terminal {solenoid valve B) and body ground.
STANDARD: 12 - 25 O
LOCK.UP CONTROLSOLENOID VALVE A/BASSEMBLY
Replace the lock-uo control solenoid valve assem-
bly if the resistance is out of specification.
lf the resistance is within the standard, connect the
No. 1 terminal of the lock-uD control solenoid valve
connector to the battery positive terminal. A clicking
sound should be hea.d. Connect the No. 2 terminal to
the battery positive terminal. A clicking sound should
be heard. Replace the lock-up control solenoid valve
assembly if no clicking sound is heard.
1.Remove the mounting bolts and lock-up control
solenoid valve A/B assemblv.
Check the lock-up control solenoid valve fluid pas-
sages for dust or dirt. and replace as an assembly, if
necessary.
6x1.0mm12 N.m (1.2 kgtm,8.7 lbf.ftl
Clean the mounting surfaceand tluid passages.
Clean the mounting surface and fluid passages of
the lock-up control solenoid valve assembly, and
install a new lock-up control solenoid valve Ay'B with
a new filter/gasket.
Check the connector for rust, din or oil, and recon-
nect it securelv.
l-
14-87

Shift Control Solenoid Valve A/B Assembly
Test
NOTE: Shift control solenoid valves A and B must be
removed/replaced as an assembly.
l. Disconnect 3P connector from the shift control
solenoid valve A,/B assembly.
2. Measure the resistance between the No. 1 terminal
(solenoid valve A) of the shift control solenoid valve
connector and body ground, and between the No. 3
terminal (solenoid valve B) and body ground.
STANDARD: 12 - 25 o
Replace the shift control solenoid valve assembly if
the resistance is out of sDecification.
lf the resistance is within the standard, connect the
No. 1 terminal of the shift control solenoid valve con-
nector to the battery positive terminal. A clicking
sound should be heard. Connect the No. 3 terminal to
the battery positive terminal. A clicking sound should
be heard. Replace the shift control solenoid valve
assembly if no clicking sound is heard.
J
1.0 mmN.m {1.2 kgf m, 8.7 lbf'ft)
\
^ ,, ..,'
UYM
6x't2
a
SOLENOID
v.
SHIFT CONTROLSOLENOID VALV€ A/BASSEMBLY
Replacement
Remove the mounting bolts and shift control sole-
noid valve ly'B assemblv.
NOTE: Be sure to remove or replace the shift con-
trol solenoid valves A and B as an assemblY.
Check the shift control solenoid valve fluid pas-
sages for dust or dirt, and replsce as an assembly, if
necessarv.
BRACKET
Clean the mounting surfaceand tluid passages.VALVE A/B ASSEMBLYFILTER/GASKETReplace.
Clean the mounting surfsce and fluid passages of
the shift control solenoid valve assembly, and
install a new shift control solenoid valve Ay'B with a
new filter/gasket.
Check the connector for rust, dirt or oil, and recon-
nect at securely.
14-88

L
\a
\."tl
14-91
J
al
PROBABLE CAUSE
1Low ATF.404th check ball stuck.
2ATF pump worn or binding.4'lTorque converter housing or transmissionhousing ball bearing worn/damageo.
3Regulator valve stuck or spring worr..42ATF strainer clogged.
4Servo valve stuck.43Joint in shift cable and transmission or body
5Mainshaft worn/damaged.44Modulator valve stuck.
6Shift cable broken/out of adiustment45Torque converter check valve stuck.
7Final gears worn/damaged (2 gears).46Foreign material in separator plate orifice.
8One.way {sprag) clutch worn/damaged.47Lock-up timing B valve stuck.
91st gears worn/damaged {2 gears).4ALock-up shift valve stuck.
10lst clutch defective.49Lock-up piston defective.
112nd gears worn/damaged (2 gears).50Lock-up control valve stuck.
122nd clutch defective.5lShift control solenoid valve A defective.
Reverse gears worn/damaged (2 gears).52Shift control solenoid valve B defectrve.
14Excessive ATF.53Lock up control solenoid valve A defective,'t5Torque converter one-wav clutch defective.54Lock-up control solenoid valve B defective.
16Throttle valve B stuck.55Servo control valve stuck.
11Throttle control cable out of adiustment.564-3 kick-down valve stuck.
181-2 shift valve stuck.3-2 kick-down valve stuck.'192 3 shift valve stuck.lst-hold clutch defective.
203-4 shift valve stuck.59'| st accumulator defective.
2nd accumulator defective.60'lst-hold accumulator defective,
223rd accumulator delective,olA,rf gear position switch defective,
4th accumulator defective.62Parking mechanism defective.
24Orifice control valve stuck.63Mainshaft speed sensor defective.
Foreign material in main orifice.64Countershaft speed sensor defective.
26Foreign material in lst orifice.
Foreign material in 2nd orifice.
2A2-3 orifice control valve stuck.
29Foreign material in 3rd orifice.
30Foreign material in 4th orifice.
JI3rd clutch defective.
4th clutch defective.
33Engine output low.
34Needle bearing worn/damaged.
35Thrust washer worn/damaged.
36Clutch clearance incorrect.
37Drive plate defective or transmission misas-semory.
382nd check ball stuck.
393rd check ball stuck.
(cont'd)

The following symptoms can be caused
by improper repair or assembly
Checkthese items on the
PROBABLE CAUSE DUE TO
IMPROPER REPAIR Llst
Items on the
NOTES List
Vehicle creeps in E] position.R1, R2
Vehicle does not move in l&l or Lql position.R4
Transmittion locks up in E] position.R3, R12
Excessive drag in transmission.R6K,R
Excessive Vibration, rpm related.R7
Noise with wheels moving only.R5
Msin soal pops out,R8
Various shifting problems.R9, R1O
Harsh upshifts.Rl l
Symptom-to-Gomponent Ghart
Hydraulic System (cont'd)
14-92
\.J
v.4
\/J
PROBABLE CAUSE DUE TO IMPROPER REPAIR
R1lmproper clutch clearance.
R2.lmproper gear clearance.
R3.Parking brake lever installed upside down.
R4.One-way (sprag) clutch installed upside down.
R5.Reverse selector hub installed uoside down.
R6.ATF pump binding.
R7.Torque converter not fully seated in ATF pump.
R8.Main seal improperly installed.
R9.Springs improperly installed.
R10.Valves improperly installed.
R11Ball check valves not installed.
R12.Shift tork bolt not installed.

NOTES
See flushing procedure, page 14-172 and 173.
B.Set idle rpm in gear to specilied idle speed. lf still no good, adjust motor mounts as outlined in enginesection of service manual.
c.lf the large clutch piston O-.ing is broken, inspect the piston groove for rough machining.
D.lf the clutch pack is seized or is excessively worn, inspect the other clutches lor wear, and check the
orifice control valves and throttle valves for free mov€ment.
E.lf throttle valve B is stuck. insDect the clutches for wear.
lf the 1 - 2 shift valve is stuck closed, the transmission will not upshitt. lf stuck open, the transmissionhas no lst gear.
H.lf the 2-3 orilice control valve is stuck, inspect the 2nd and 3rd clutch packs for wear.
lf the orifice control valve is stuck. inspect the 3rd and 4th clutch packs for wear.
J.lf the clutch pressure control valve is stuck closed, the transmission will not shift out oI 1st gear.
lmproper alignment or main valve body and torque converter housing may cause ATF pump seizure.
The symptoms are mostly an rpm-related ticking noise or a high-pitched squeak.
lf the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump and differentialpinion shaft. lf both are OK and no cause for the contamination is found, replace the torque converter.
M.lf the 1st clutch feed pipe guide in the right side cover is scored by the mainshaft, inspect the ball bear-
ing lor excessive movement in the transmission housing. lf OK, replace the right side cover as it is dent-
ed. The O-ring under the guide is probably worn.
N.Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged.lf the 4th feed pipe is damaged or out of round, replace the right side cover.Replace the sub-shaft il the bushing for the 1st-hold teed pipe is loose or damaged.lf the 1st-hold teed pipe is damaged or out of round, replace it.
Replace the mainshaft iI the bushing for the lst feed pipe is loose or damaged.lf the 1st leed pipe is damaged or out of round, replace it.
A worn or damaged sprag clutch is mostly a result of shifting the transmission in El or LDll position
while the wheels rotate in reverse, such as rocking the vehicle in snow.
P.Inspect the trame for collision damage.
Inspect lor damage and wear:1. Reverse selector gear teeth chamfers.2. Engagement teeth chamfers of countershaft 4th and reverse gear.
3. Shift fork for scuff marks in center.4. Differential pinion shaft tor wear under pinion gears.
5. Bottom of 3rd clutch for swirl marks.Replace items 1 . 2, 3 and 4 iI worn or damaged. lf transmission makes clicking, grinding or whirringnoise, also replace mainshaft 4th gear, reverse idler gear, and countershatt 4th gear in addition to '1,
2,3or4.It differential pinion shalt is worn, overhaul differential assembly, and replace ATF strainer, and thoroughly
clean transmission, tlush torque conveder, cooler and lines.lf bottom ot 3rd clutch is swirled and transmission makes gear noise, replace the countershaft and final
onven qear.
R.Be very 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 ATFpump seizure if not detected. Use proper tools.
S.Install the main seal llush with the torque converter housing. lf you push it into the torque converterhousing until it bottoms out. it will block the fluid return passage and result in damage.
T.Harsh downshifts when coasting to a stop with zero throttle may be caused by a bent-in throttle valve
retainer/cam stopper. Throttle cable adjustment may clear this problem.
Throttle cable adjustment is essential tor proper operation ol the transmission. Not only does it affectthe shift points if misadjusted, but also the shift quality and lock up clutch operation.A cable adjusted too long will result in throttle pressure being too low for the amount of engine torqueinput into the transmission and may cause clutch slippage. A cable adjusted too short will result in toohiqh throttle pressure which may cause harsh shifts, erratic shifts and torque converter hunting.

Road Test
(cont'dl
Lock-up: E Position
. Lock-up: Ell Position
4. Accelerate to about 35 mph (57 km/h) so the transmission is in 4th, then shitt from E position to E position.
The vehicle should immediately begin slowing down from engine braking.
CAUTION: Do noi shitt lrom I or $ position to E or E position 8t speeds over l0o mph (160 km/h); you may
damage the transmission.
5. Check for abnormal noise and clutch slippage in the following positions,
E {1st Gear} Position-1. Accelerate from a stop at fullthrottle. Check that there is no abnormal noise or clutch slippage.-2. Upshifts should not occur with the shift lever in this position.
E (2nd Gear) Position-1. Accelerate from a stop atfull throttle. Check that there is noabnormal noiseorclutch slippage.-2. Upshifts and downshifts should not occur with the shift lever in this position.
E (Reverse) Position
Accelerate from a stop at tull throttle, and check for abnormal noise and clutch slippage.
6. Test in E (Parking) Position
Park vehicle on slope {app.ox. 16'}, apply the parking brake, and shift into E position. Release the brake; the vehicle
should not move.
Throttle OpeningUnit of spoedLock-up control solenoid
valve A: ON
Lock-up contlol solenoid
valve B: ON
Throttle position sensor
voltage: 1.0 V
mph14.0 - 17.017 .0 - 20.0
km/h22.5 - 27 .427 .4 - 32.2
Fully-opened throftlemph92.0 - 96.092.0 - 96.0
km/h148.1 - 154.5148.1- 154.5
Throttle OpeningUnit of speedLock-up conirol 3olenoid
valve A: ON
Lock-up control solonoid
valvs B: ON
Throttle position sensor
voltage: 1.0 V
mph61.0 - 68.060.0 - 67.0
km/h98.2 - 109.496.6 - 107.8
Fully-opened throttlempn85.0 - 94.085.0 - 94.0
km/h136.8 - 151.3'136.8 - 151.3
14-96
-

Stall Speed
V
€nt transmission damage, do not tost stall speod for mol€ than
shitt tho lever while raising the engina speed,
10 soconds at a time.
L
CAUTION:
a To prev€nt transmission damage, do not tost stall speod for mol€ than 10 soconds at a time.
a Do not shitt tho lever while raising the engina speed,
a Be suro to remove tho plossule gaugo bolore testing st8ll spe€d.
1. Engage the parking brake. and block all lour wheels.
2. Connect the tachometer, and start the engine,
3. Make sure the A/C switch is OFF.
4. After the engine has warmed up to normal operating temperature {the radiator fan comes on), shift into g position.
5. Fully depress the brake pedal and accelerator for 6 to I seconds. and note engine speed.
6. Allow two minutes for cooling, then repeat the test in [, [Dll and @ oositions.
NOTE:
a Stall speed tests should be used tor diagnostic purposes only.
. Stall speed should be the same in E, tr, tr and @ Fositions.
Stall Speed FPM: rpm
Specification:
Bl88l €ngine 2,5q) rpm
Bl8Cl engine 2.i|{10 .pm
Sorvice Limit:
81881 engins 2,350 - 2,650 rpm
Bl8Ct ongine 2,250 - 2,550 rpm
TROUBLEPROBABLE CAUSE
Stall rpm hish in E, E, I and @position
Low tluid level or ATF pump output
Clogged ATF strainer
Pressure regulator valve stuck closed
Slipping clutch
Stall rpm high in I positionSlippage of 1st clutch, 1st-hold clutch or 1st gear one-way clutch
Stall rpm high in E positionSlippage of 2nd clutch
Stall rpm high in ldnl posirionSlippage of 1st clutch. 1st gear one-way clutch
Stall rpm high in [!l positionSlippage of 4th clutch
Stall rpm low in E, E. I and @position
Engine output low
Torque convener one-way clutch slipping
14-97