1995 ACURA TL service

Electrical Switc h Replacemen t
SRS component s ar e locate d in thi s area . Revie w th e SR S
componen t locations , precautions , an d procedure s in th e
SR S (sectio n 24 ) befor e performin g repair s o r service .
1 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e radio ,
the n writ e dow n th e frequencie s fo r th e radio' s pre -
set buttons .
2. Disconnec t th e batter y negativ e cable , the n discon -
nec t th e positiv e cable , an d wai t a t leas t thre e min -
utes .
3 . Remov e th e dashboar d lowe r cove r an d kne e bolste r
(se e pag e 23-67 ).
4 . Remov e th e steerin g colum n cover s (se e pag e 23-67 ).
5 . Disconnec t th e connector s fro m th e switch .
SWITCHHARNES S
IGNITION SWITC H7PCONNECTO R
7 P CONNECTO R
6. Remov e th e colum n holde r mountin g bolt s an d nut s
(se e pag e 23-68 ).
7 . Lower the steerin g colum n assembly .
8 . Center-punc h eac h o f th e tw o shea r bolts , an d dril l
their head s of f wit h a 5 mm (3/1 6 in ) dril l bi t (se e
pag e 23-68 ).
CAUTION : D o no t damag e th e switc h bod y whe n
removin g th e shea r bolts .
9 . Remov e th e shea r bolt s fro m th e switc h body , the n
remov e th e steerin g loc k assembly .
10 . Remov e th e thre e screws , an d replac e th e electrica l
switch .
ELECTRICA LSWITCH
11. Instal l i n th e revers e orde r o f remova l (se e pag e
23-6 8 fo r steerin g loc k installation) .
ProCarManuals.com

Starting System

Armature Inspection and Test

1.

Inspect the armature for wear or damage due to con-

tact with the permanent magnet. If there is wear or

damage, replace the armature.

Inspect for damage

2. Check commutator surface and diameter.

If the surface is dirty or burnt, resurface with emery

cloth or a lathe within the following specifications,

or recondition with #500 or #600 sandpaper.

COMMUTATOR

SANDPAPER
If commutator diameter is below the service limit,

replace the armature.

Commutator Diameter

Standard (NEW)

28.0-28.1 mm

(1.102-1.
106 in)
Service Limit

27.5
mm

(1.083 in)

VERNIER CALIPER

COMMUTATOR

3. Measure the commutator runout.

If the commutator runout is within the service

limit, check the commutator for carbon dust or

brass chips between the segments.

If the commutator runout is not within the ser-

vice limit, replace the armature.

Commutator Runout

Standard (NEW)

0-0.02 mm

(0-0.0008 in)
Service Limit

0.05
mm

(0.002 in)

DIAL INDICATOR

COMMUTATORProCarManuals.com

4.
Check for mica depth. If necessary, undercut the mica

with a hacksaw blade to achieve proper depth. If the

service limit cannot be maintained, replace the arma-

ture.

HIGH

MICA
NOT GOOD

GOOD

MICA DEPTH

Commutator Mica Depth

Standard (NEW)

0.4-0.5 mm

(0.016 -0.020 in)
Service Limit

0.15
mm

(0.006 in)

5.
Check for continuity between the segments of the

commutator. If an open circuit exists between any

segments, replace the armature.

COMMUTATOR SEGMENT
6.
Place the armature on an armature tester. Hold a

hacksaw blade on the armature core. If the blade is

attracted to the core or vibrates while the core is

turned, the armature is shorted. Replace the arma-

ture.

ARMATURE TESTER

HACKSAW BLADE

ARMATURE

7. Check with an ohmmeter that no continuity exists

between the commutator and armature coil core,

and between the commutator and armature shaft. If

continuity exists, replace the armature.

SHAFT
COIL CORE

COMMUTATORProCarManuals.com

Ignition Syste m
Ignition Timin g Inspectio n
SRS component s ar e locate d in 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 service .
1.
2 .
Star t th e engine . Hol d th e engine at 3,00 0 rp m wit h
no loa d (shif t leve r i n o r position ) unti l th e
radiato r fa n come s on , the n le t i t idle .
Pul l ou t th e servic e chec k connecto r locate d unde r
th e glov e box . Connec t th e GRN/BL U an d OR N wir e
terminal s wit h th e specia l tool .
SCS SERVIC E CONNECTO R
( 07PAZ-0010100 )
SERVIC E CHEC K CONNECTO R (2P)
NOTE : Locate d unde r th e glov e bo x
3. Chec k th e idl e spee d (se e pag e 23-85 ).
4 . Connec t a timin g ligh t t o th e No . 1 ignitio n wire .
Poin t th e ligh t towar d th e pointe r o n th e timin g
bel t cover .
NO. 1 PLU G WIR E
TIMIN G LIGH T
5. Inspec t ignitio n timin g a t idl e speed .
Ignitio n Timing :
15 ° ± 2° BTD C (RED ) a t 70 0 ± 50 rp m wit h shif t leve r
in o r positio n an d electrica l system s turne d
off.
POINTE R
RE D MAR K
CRANKSHAFT
PULLEY
6. I f th e ignitio n timin g i s incorrect , replac e th e EC M
(ther e is n o wa y t o adjus t ignitio n timing) .
7 . Disconnec t th e specia l too l fro m th e servic e chec k
connector .
WHITE MAR K(TDC)
ProCarManuals.com

Charging System

Rectifier Test

NOTE: The diodes are designed to allow current to pass

in one direction while blocking it in the opposite direc-

tion. Since the alternator rectifier is made up of eight

diodes (four pairs), each diode must be tested for conti-

nuity in both directions with an ohmmeter that has diode

checking capability; a total of 16 checks.

1.

Check for continuity in each direction, between the

B and P, and between the E (ground) and P termi-

nals of each diode pair. All diodes should have con-

tinuity in only one direction.

2. If any of the eight diodes fails, replace the rectifier

assembly. (Diodes are not available separately.)
Alternator Brush Inspection

1. Remove the end cover, then take out the brush holder

by removing its two screws.

2. Measure the length of the brushes with a vernier

caliper.

Alternator Brush Length:

Standard: 10.5 mm (0.41 in)

Service Limit: 1.5 mm (0.06 in)

ALTERNATOR BRUSHES

VERNIER CALIPER

If the brushes are less than the service limit, replace

the alternator brush assembly.ProCarManuals.com

Gauge Assembl y
Removal
SRS component s ar e locate d in 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 service .
1 . Remov e th e instrumen t pane l (se e sectio n 20 ).
2 . Remov e th e fou r screw s fro m th e gaug e assembly ,
and sprea d a protectiv e clot h o n th e uppe r colum n
cover.
PROTECTIV E CLOT H
3. Pr y th e gaug e assembl y out , an d disconnec t th e
connectors .
4. Carefull y remov e th e gaug e assembly .
5 . Instal l i n th e revers e orde r o f removal .
ProCarManuals.com

Interlock Syste m
Componen t Locatio n Inde x
SRS component s ar e locate d in thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s in th e SR S
(sectio n 24 ) befor e performin g repair s o r service .
A/T GEA R POSITIO N INDICATO R
Se e pag e 23-11 5
A/ T GEA R POSITIO N SWITC H
Test , pag e 23-14 6
INTERLOC KCONTROLUNITInpu t Test , pag e 23-13 0 KE
Y INTERLOC K SOLENOI D
an d KE Y INTERLOC K SWITC H
(I n th e steerin g loc k assembly )
Test , pag e 23-13 2
SHIF T LOC K SOLENOI D
Test , pag e 23-13 2
Replacement , pag e 23-13 3
PARKING PI N SWITC H
Test , pag e 23-13 4
Replacement , pag e 23-13 4
ProCarManuals.com

Interlock Syste m
Contro l Uni t Inpu t Tes 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 service .
1 . Disconnec t th e 8 P connecto r fro m th e interloc k contro l unit .
2 . Inspec t th e connecto r an d socke t terminal s t o b e sur e the y ar e al l makin g goo d contact .
I f th e terminal s ar e bent , loos e o r corroded , repai r the m a s necessary , an d rechec k th e system .
I f th e terminal s loo k OK , mak e th e followin g inpu t test s a t th e connector .
— If a tes t indicate s a problem , fin d an d correc t th e cause , the n rechec k th e system .
— If al l th e inpu t test s prov e OK , substitut e a known-goo d contro l unit , an d rechec k th e system . I f th e chec k i s OK ,
th e contro l uni t mus t b e faulty ; replac e it .
NOTE : I f th e shif t loc k solenoi d click s whe n th e ignitio n switc h i s turne d O N (II ) an d yo u ste p o n th e brak e peda l (wit h
the shif t leve r i n ) , th e shif t loc k syste m is electronicall y normal ; i f th e shif t leve r canno t b e shifte d fro m , test th e
A/ T gea r positio n switc h a s describe d o n pag e 23-146 , an d se e sectio n 14 .
INTERLOC K CONTRO L UNI T
8P CONNECTO R
WIRE SID E O FFEMAL E TERMINAL S
ProCarManuals.com