1995 ACURA TL battery

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

YEL/BLK

YEL/WHT

YEL

LT

GRN/YEL

WHT/GRN
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

coolant temperature

below 207°F [97°C])
Corrective action if desired results are

not obtained

Repair open to body ground.

Check No. 39 (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. 8 (7.5 A) fuse in the under-

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

the YEL/BLK 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 k 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 con-

denser fan relay, or the YEL wire between

the radiator fan control module and the

radiator fan relay. If OK, test the con-

denser fan relay or the radiator fan relay.

Faulty engine coolant temperature (ECT)

switch B, short to body ground, or faulty

radiator fan control module.

* No.4 (15 A): '95 and '96 models

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

Heater Valve

Test

1. Disconnect the 2P connector from the heater valve

control solenoid valve.

2. Check for continuity between the No. 1 and No. 2

terminals of the heater valve control solenoid valve.

HEATER VALVE CONTROL

SOLENOID VALVE

3. Disconnect the #2 vacuum hose from the intake

manifold, then connect a vacuum pump to the #2

vacuum hose.

HEATER VALVE CONTROL

SOLENOID VALVE

#2 VACUUM HOSE

HEATER VALVE

4. Connect battery power to the No. 2 terminal of the

heater valve control solenoid valve, and ground the

No. 1 terminal.

5. Check that the rod of the heater valve is pulled

toward the diaphragm when vacuum is applied to

the heater valve control solenoid with a vacuum

pump.

6. Check that the rod is returned to the original posi-

tion when power is disconnected.
RODProCarManuals.com

Heater Uni t
Replacemen t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S ( sectio n 24 ) befor e performin g repair s o r ser -
vice .
1 . Disconnec t th e negativ e cabl e fro m th e battery .
2 . Whe n th e engin e i s cool , drai n th e engin e coolan t
fro m th e radiato r (se e sectio n 10 ).
D o no t remov e th e radiato r ca p whe n
th e engin e i s hot ; th e engin e coolan t i s unde r pres -
sur e an d coul d severel y scal d you .
3 . Remov e th e mountin g nu t an d th e heate r valve ,
the n disconnec t th e heate r hose s fro m th e heate r
unit.
CAUTION : Engin e coolan t wil l damag e paint .
Quickl y rins e an y spille d engin e coolan t fro m paint -
e d surfaces .
NOTE : Engin e coolan t wil l ru n ou t whe n th e hose s
ar e disconnected ; drai n i t int o a clea n dri p pan .
HEATE R HOS E
(OUTLE T SIDE ) HEATE
R HOS E
(INLE T SIDE )
CLAMP S
HEATE R VALV E
6 x 1. 0 m m9.8 N- m (1. 0 kgf-m ,
7. 2 Ibf-ft )
4. Remov e th e dashboar d (se e sectio n 20 ). 5
. Remov e th e seve n mountin g bolt s an d th e steerin g
hange r beam .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft ) STEERIN
G HANGE R BEA M
6. Remov e th e wir e harnes s clips , th e thre e self-tap -
pin g screw s an d th e pip e cover .
PIPE COVE R WIR
E HARNES S CLIP S
ProCarManuals.com

Compressor
Replacemen t
1. I f th e compresso r i s marginall y operable , ru n th e
engin e a t idl e speed , an d le t th e ai r conditione r
wor k fo r a fe w minutes , the n shu t th e engin e off .
2 . Disconnec t th e negativ e cabl e fro m th e battery .
3 . Recove r th e refrigeran t wit h a Recovery/Recycling /
Chargin g Syste m (se e pag e 22-71 ).
4 . Remov e th e intak e ai r duc t (se e sectio n 5) .
5 . Remov e th e A/ C compresso r bel t (se e pag e 22-78 ).
6 . Remov e th e connector s fro m th e bracket , the n dis -
connec t th e compresso r clutc h connector . Remov e
th e bol t an d th e bracket .
COMPRESSO R
CLUTC H
CONNECTO R
BRACKET
7. Remov e th e nuts , the n disconnec t th e suctio n lin e
an d th e discharg e lin e fro m th e compressor .
NOTE : Plu g o r ca p th e line s immediatel y afte r dis -
connectin g the m to avoi d moistur e an d dus t con -
tamination .
DISCHARG E LIN E
SUCTIO N LIN E
6 x 1. 0 m m9.8 N- m (1. 0 kgf-m ,
7 Ibf-ft )
8. Remov e th e fou r mountin g bolt s an d th e compres -
sor.
8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
COMPRESSO R
9. Remov e th e fou r bolt s an d th e suctio n servic e valv e
fro m th e compressor .
25.5 N- m (2. 6 kgf-m , 18. 8 Ibf-ft )
SUCTIO N SERVIC E
VALV E
O-RIN G
Replace .
ProCarManuals.com

Troubleshooting

Tips and Precautions

Before Troubleshooting

Check applicable fuses in the appropriate fuse/relay

box.

Check the battery for damage, state of charge, and

clean and tight connections.

Check the alternator belt tension.

CAUTION:

Do not quick-charge a battery unless the battery

ground cable has been disconnected, otherwise you

will damage the alternator diodes.

Do not attempt to crank the engine with the battery

ground cable loosely connected or you will severely

damage the wiring.

Handling Connectors

Make sure the connectors are clean and have no loose

wire terminals.

Make sure multiple cavity connectors are packed with

grease (except waterproof connectors).

All connectors have push-down release type locks.

LOCKING TAB

Some connectors have a clip on their side used to

attach them to a mount bracket on the body or on

another component. This clip has a pull type lock.

Some mounted connectors cannot be disconnected

unless you first release the lock and remove the con-

nector from its mount bracket.

LOCKING

PAWL ON

OTHER

HALF OF

CONNECTOR
Pull to

disengage

BRACKET
Never try to disconnect connectors by pulling on

their wires; pull on the connector halves instead.

Always reinstall plastic covers.

Before connecting connectors, make sure the termi-

nals are in place and not bent.

BENT TERMINAL

Check for loose retainer and rubber seals.

RETAINER
RUBBER SEAL RETAINER

The backs of some connectors are packed with

grease. Add grease if necessary. If the grease is con-

taminated, replace it.
LOCKING TABProCarManuals.com

Battery

Test

Battery fluid (electrolyte) contains sulfuric acid. It may cause severe burns if it gets on your skin or in your eyes. Wear

protective clothing and a face shield.

— If electrolyte gets on your skin or clothes, rinse it off with water immediately.

— If electrolyte gets in your eyes, flush it out by splashing water in your eyes for at least 15 minutes; call a physician

immediately.

A battery gives off hydrogen gas. If ignited, the hydrogen will explode and could crack the battery case and splatter

acid on you. Keep sparks, flames, and cigarettes away from the battery.

Overcharging will raise the temperature of the electrolyte. This may force electrolyte to spray out of the battery vents.

Follow the charger manufacturer's instructions, and charge the battery at a proper rate.

Use either a JCI or Bear ARBST tester, and follow the manufacturer's procedures. If you don't have one of these comput-

erized testers, follow this conventional test procedure:

To get accurate results, the temperature of the electrolyte must be between 70°F (21°C) and 100°F (38°C).

Check For Damage

If the case is cracked or the posts are loose, replace

the battery.

Check Indicator EYE Color

If the indicator shows low electrolyte, add distilled

water if possible.

EYE Indicates OK
EYE Indicates LOW

CHARGE

Test Load Capacity (#1)

Apply 300 amp load for 15 seconds to remove

surface charge.

Allow 15 seconds recovery period.

Apply test load (see Test Load Chart).

Record voltage at the end of 15 seconds.

Stays above 9.6 volts;

battery is OK.
Drops below 9.6 volts.ProCarManuals.com

Charge on High Setting (40 amps)

Charge until EYE shows charge is OK; plus an

additional 30 minutes to assure full charge.

NOTE: If the battery charge is very low, it may

be necessary to bypass the charger's polarity

protection circuitry.

If the EYE does not show charge is OK within

three hours, the battery is no-good; replace it.

Write down how long the battery was

charged.

Test Load Capacity (#2)

Apply 300 amp load for 15 seconds to remove surface charge.

Allow 15 seconds recovery period.

Apply test load (see Test Load Chart).

Record voltage at the end of 15 seconds.

70D23L-MF

BATTERY CODE

TEST LOAD CHART

Use the test load or 1/2 the cold cranking amps (CCA) printed on the

label on the top of the battery. If neither is indicated, use the

information below:

BATTERY

CODE

70
COLD CRANKING

AMPS (CCA)

440
LOAD

(amps)

220
Drops below 9.6 volts; battery is no-good.
Stays above 9.6 volts; battery is OK.ProCarManuals.com

Starting Syste m
Starter Tes t
NOTE : Th e ai r temperatur e mus t b e betwee n 5 9 an d
100° F (1 5 an d 38°C ) befor e testing .
Recommende d Procedure :
Use a starte r syste m tester .
Connec t an d operat e th e equipmen t i n accordanc e
wit h th e manufacturer' s instructions .
Tes t an d troubleshoo t a s described .
Alternate Procedure :
Use followin g equipment :
— Ammeter , 0 - 400 A
— Voltmeter , 0 - 20 V (accurat e withi n 0. 1 volt )
— Tachometer , 0 - 1,20 0 rp m
Hoo k u p a voltmete r an d ammete r a s shown .
NEGATIV ETERMINA L
NOTE: Afte r thi s test , o r an y subsequen t repair , rese t
th e EC M to clea r an y code s (se e sectio n 11 ).
Chec k th e Starte r Engagemen t
1 . Disconnec t th e 4 P connecto r fro m th e ignitio n coil .
IGNITIO N COI L
4P CONNECTO R
2. Wit h th e shif t leve r i n o r , turn th e ignitio n
switch to STAR T (III) .
Th e starte r shoul d cran k th e engine . I f th e starte r
doe s no t cran k th e engine , g o to ste p 3 .
I f i t crank s th e engin e erraticall y o r to o slowly , g o
t o "Chec k fo r Wea r an d Damage " o n th e nex t
page .
3. Chec k th e battery , batter y positiv e cable , ground ,
starte r cu t relay , securit y contro l unit , an d th e wir e
connection s fo r loosenes s an d corrosion . Tes t again . I f
th e starte r stil l doe s no t cran k th e engine , g o to ste p 4 .
4 . Unplu g th e connecto r (BLK/WH T wir e an d solenoi d
terminal ) fro m th e starter . Mak e sur e th e shif t leve r
is i n o r , then connec t a jumpe r wir e fro m th e
batter y positiv e (+ ) termina l t o th e solenoi d termi -
nal . Th e starte r shoul d cran k th e engine .
I f th e starte r stil l doe s no t cran k th e engine , remov e
it , an d diagnos e it s interna l problem .
I f th e starte r crank s th e engine , g o t o ste p 5 an d
continu e th e test .
5 . Chec k th e ignitio n switc h (se e pag e 23-66 ).
6 . Chec k th e starte r cu t rela y (se e pag e 23-63 ).
7 . Chec k th e A/ T gea r positio n switc h (se e pag e 23-146 ).
8 . Chec k th e securit y contro l uni t (se e pag e 23-283 ).
9 . Chec k fo r a n ope n in th e BLK/GR N wir e betwee n th e
ignitio n switc h an d starte r cu t relay , an d chec k fo r
a n ope n i n th e BLK/WH T wir e betwee n th e starte r
cu t rela y an d starter .
SOLENOI DTERMINA LWIRE
BLK/WH TWIRE
S (SOLENOID ) TERMINA L
ProCarManuals.com