1995 ACURA TL battery

Throttle B Pressure Measurement

While testing, be careful of the rotating

front wheels.

1. Disconnect the transmission sub-harness connector

(14P).

2. Start the engine, and run it at 1,000 rpm.

3. Measure fully-opened throttle B pressure.

4. Connect battery voltage to the linear solenoid termi-

nals of the transmission sub-harness connector as

shown.

5. Measure fully-closed throttle B pressure.
TRANSMISSION SUB-HARNESS

CONNECTOR (14P)

Terminal side of

male terminals

THROTTLE B PRESSURE

INSPECTION HOLE

PRESSURE

Throttle B
SHIFT LEVER

POSITION
SYMPTOM

Pressure too

high

No or low

pressure
PROBABLE CAUSE

Throttle Valve

Body/Linear

Solenoid

Assembly
FLUID PRESSURE

Standard

0-15kPa

(0-0.15kgf/cm2,

0-2
psi)

Fully closed throttle

580
-
630
kPa

(5.9 - 6.4 kgf/cm2,

84-91 psi)

Fully opened throttle
Service Limit

540 kPa

(5.5 kgf/cm2, 78 psi)

Fully opened throttle

14-117ProCarManuals.com

6. Disconnect the transmission sub-harness connector (14P).

7. Start the engine, and run it at 2,000 rpm.

TRANSMISSION SUB-HARNESS

CONNECTOR (14P)

8. Shift to the [HI or [P] position, and measure line pressure at fully-opened throttle.

9. Connect battery voltage to the linear solenoid terminals of the transmission sub-harness connector as shown.

10. Measure line pressure at fully-closed throttle.

If line pressure is out of specification, check and repair the probable cause in the table below.

PRESSURE

Line
SHIFT LEVER

POSITION

or
SYMPTOM

No (or
low)

line pressure
PROBABLE CAUSE

Torque converter,

ATF pump, pres-

sure regulator.

torque converter

check valve
FLUID PRESSURE

Standard

520 kPa

(5.3 kgf/cm2, 75 psi)

Fully closed throttle

|

910 kPa

(9.3 kgf/cm2, 130 psi)

Fully opened throttle
Service Limit

500 kPa

(5.1 kgf/cm2, 73 psi)

Fully closed throttle

790 kPa

(8.1 kgf/cm2, 120 psi)

Fully opened throttle

11. Stop the engine, and connect the transmission sub-harness connector (14P).

12. Disconnect the special tool from line pressure inspection hole, and connect the special tool to each inspection hole.

13. Start the engine, and run it at 2,000 rpm.

(cont'd)ProCarManuals.com

Throttle Valv e Body/Linea r Solenoi d Assembl y
Test
Connec t th e No . 4 (RED : + ) termina l o f th e shif t con -
tro l solenoi d valve/linea r solenoi d harnes s connec -
to r t o th e batter y positiv e termina l an d th e No . 3
(WHT : - ) termina l t o th e batter y negativ e terminal .
Check tha t th e throttl e valv e moves .
SHIFT CONTRO LSOLENOID VALV E
LINEAR SOLENOI D
THROTTL EVALVE BOD Y
Termina l sid e o fmal e terminal s
RED: +
WHT : -
NOTE :
THROTTL E VALV EThrottle valv e move s i n thi sdirectio n whil e connectin g th ebattery .
Do no t adjus t o r remove ;this is adjuste d a t th e factory .
2 . Disconnec t th e batter y terminal s an d chec k tha t th e
throttl e valv e i s released .
3 . Repea t th e abov e step s 1 an d 2 .
NOTE : Yo u ca n se e th e movemen t o f th e throttl e
valv e throug h th e flui d passag e i n th e attachin g sur -
fac e o f th e throttl e valv e body .
4 . I f th e throttl e valv e binds , o r move s sluggishly , o r
th e linea r solenoi d doe s no t operate , replac e th e
throttl e valv e body/linea r solenoi d a s a n assembly .
5 . I f th e linea r solenoi d doe s no t operate , disconnec t
th e linea r solenoi d harnes s fro m th e linea r solenoi d
assembly . Connec t th e batter y terminal s directl y t o
th e linea r solenoid .
6 . I f th e linea r solenoi d operate s afte r connectin g th e
battery , an d th e throttl e valv e movemen t i s OK ,
replac e th e shif t contro l solenoi d valv e assembly .
Replacemen t
NOTE: Throttl e valv e body/linea r solenoi d mus t b e
replace d a s a n assembly .
1. Chec k th e throttl e valv e bod y passage s fo r dus t o r
dirt , an d replac e a s a n assembly , i f necessary .
2 . Clea n th e mountin g surfac e an d flui d passage s o f
th e throttl e valv e body .
3 . Assembl e th e throttl e valv e body/linea r solenoi d t o
th e secondar y valv e body .
FLANG E NU T5 x 0. 8 m m6N- m(0.6 kgf-m , 4 Ibf-ft )
LINEA R SOLENOI D
THROTTLEVALVE BOD Y
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Transmission
Removal
Make sur e lift s ar e place d properly , an d
hois t bracket s ar e attache d t o th e correc t positio n o n
th e engin e (se e sectio n 1 ).
CAUTION : Us e fende r cove r t o avoi d damagin g painte d
surfaces .
1. Befor e yo u disconnec t power , mak e sur e yo u hav e
th e anti-theft code fo r th e radio , the n writ e dow n
th e frequencie s fo r th e radio' s prese t buttons .
2 . Disconnec t th e batter y negativ e (- ) termina l fro m
th e battery , the n remov e th e positiv e (+ ) terminal .
3. Shif t th e transmissio n int o th e position .
4 . Remov e th e contro l box .
CAUTION : D o no t remov e th e vacuu m tube s fro m
th e contro l box .
ATF DIPSTIC KPIPE BRACKE T
TRANSMISSIO N
SUB-HARNES S
CONNECTOR S
TRANSMISSIO N HOUSIN GMOUNTIN G BOLT SCONTRO L BO X
5. Disconnec t th e transmissio n sub-harnes s connec -
tors , an d remov e th e transmissio n sub-harnes s
clamp .
6 . Remov e th e thre e bolt s securin g th e AT F dipstic k
pip e bracket .
7 . Remov e th e transmissio n housin g mountin g bolts . 8
. Drai n th e automati c transmissio n flui d (ATF) . Reinstal l
th e drai n plu g wit h a ne w sealin g washer .
SEALIN G WASHE RReplace.DRAIN PLU G18 x 1. 5 m m49 N- m (5. 0 kgfm ,36 Ibf-ft )
9. Pul l th e carpe t bac k t o expos e th e secondar y heate d
oxyge n senso r (H02 S senso r 2 ) connector , the n dis -
connec t th e connector , an d pus h i t ou t fro m insid e
o f th e vehicle .
NOTE : Th e H02 S (senso r 2 ) connecto r i s locate d
unde r th e passenger' s seat .
HO2S (SENSO R 2 )
CONNECTO R PASSENGER'
SSEAT
CARPE T
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Troubleshooting Precautions

ABS Indicator Light

1. If the system is OK, the ABS indicator light goes off two seconds after turning the ignition switch ON (II) without start-

ing the engine. After starting the engine, the ABS indicator light comes on again and goes off after two seconds. This

occurs because the ABS control unit is activated by the IG2 power source.

2. The ABS indicator light comes on when the ABS control unit detects a problem in the system. However, even though

the system is normal, the ABS indicator light comes on, too, under the following conditions. To determine the actual

cause of problem, question the customer about the problem, talking the following conditions into consideration.

Only drive wheels rotate

One wheel stuck of drive wheels

Vehicle spin

ABS operate condition continue for long time

Signal disturbance

3. When a problem is detected and the ABS indicator light comes on, there are cases when the indicator light stays on

until the ignition switch is turned OFF, and cases when the indicator light goes off automatically when the system

returns normal. For the DTC 61 and 62, the indicator light goes off automatically when the system returns normal. For

all other codes, the indicator light stays on until the ignition switch is turned OFF.

4. For DTCs 12, 14, 16, 18, 21, 22, 23, 24, 51, 52 and 53, the indicator light goes off when the vehicle is driven again and

the signals are OK after the ignition switch is turned from OFF to ON (II). However, if the DTC is erased, the CPU is

reset and the indicator light goes off right after the engine is started if the signals are OK.

Diagnostic Trouble Code (DTC)

1. The DTC is not memorized if the CPU cannot be activated or the CPU fails and the indicator light comes on.

2. The memory can hold any number of DTCs. However, when the same DTC is detected more than once, the later one

is written over the old one. Therefore, when the same problem is detected repeatedly, it is memorized as one DTC.

3. The DTCs are indicated in the order of ascending number, not in the order they occur.

4. The DTCs are memorized in the EEPROM (non-volatile memory). Therefore, the memorized DTCs cannot be canceled

by disconnecting the battery. Perform the specified procedures to erase the DTCs.

Self-diagnosis

1. The
self-diagnosis
can be
classified
into
two
categories.

• Initial diagnosis: Performed right after the engine starts and until the ABS indicator light goes off.

• Regular diagnosis: Performed right after the initial diagnosis until the ignition switch is turned OFF.

2. When a problem is detected by self-diagnosis, the system

• Turns the ABS indicator light ON

• Memorizes the DTC

• Turns the fail-safe relay OFF

• Stops ABS controlProCarManuals.com

TCS Control Unit Terminal Arrangement

WIRE SIDE OF FEMALE TERMINALS

VB: Battery Voltage
TCS CONTROL UNIT HP CONNECTORProCarManuals.com

TCS CONTROL UNIT 20P CONNECTOR

WIRE SIDE OF FEMALE TERMINALS

VB: Battery VoltageProCarManuals.com

Troubleshooting

Radiator Fan Control Module Input Tests

NOTE: Perform the following tests with the radiator fan control module 8P connector connected, the ignition switch ON (II),

and the A/C switch OFF. If you find the cause of a problem, correct it before you continue.

RADIATOR FAN CONTROL MODULE 8P CONNECTOR

WIRE SIDE OF FEMALE TERMINALS

Terminal

No.

4

6

7

2

3

1

8

5
Wire

color

BLK

WHT/GRN

BLK/YEL

BLK/YEL

YEL/WHT

YEL

LT

GRN/YEL

ORN
Test condition

Check for voltage to body

ground.

Check for battery voltage:

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Connect to body ground:

Ignition switch - ON (II)

Check for voltage.
Desired results

There should be less

than one volt.

There should be battery

voltage.

Condenser fan and radia-

tor fan should come on.

Approx. 11 V (engine oil

temperature below 198°F

[92°C])
Corrective action if desired results are

not obtained

Repair open to body ground.

Check No. 56 (10 A) fuse in the under-

hood fuse/relay box; if OK, repair open

in the WHT/GRN wire.

Check No. 4* fuse in the under-dash

fuse/relay box; if OK, repair open in the

BLK/YEL wire.

Check No. 7 (7.5 A) fuse in the under-

dash fuse/relay box; if OK, repair open in

the BLK/YEL wire.

Replace the radiator fan control module.

Before you connect the new radiator fan

control module, disconnect both fan

relays. Check for continuity between the

YEL/WHT (or YEL) wire and ground, using

the 20 scale on your ohmmeter. There

should be no continuity. If there is conti-

nuity, the new radiator fan control mod-

ule will be damaged when you connect it.

Check for an open in the LT GRN/YEL

wire between the radiator fan control

module and the condenser fan relay or

the radiator fan relay. If OK, check for an

open in the YEL/WHT wire between the

radiator fan control module and the radi-

ator fan relay, or the YEL wire between

the radiator fan control module and the

condenser fan relay. If OK, test the con-

denser fan relay or the radiator fan relay.

Faulty engine oil temperature switch,

short to body ground, or faulty radiator

fan control module.

*No. 4 (15 A):'96 model

No. 4 (20 A): '97 and '98 modelsProCarManuals.com