sensor ACURA TL 1995 Service Repair Manual

Description

The cruise control system uses mechanically and electri-

cally operated devices to maintain vehicle speed at a

setting selected by the driver.

The cruise control unit receives command signals from

the cruise control main switch and the cruise control

set/resume/cancel switch. It receives information about

operating conditions from the brake switch, ECM, vehi-

cle speed sensor (VSS), or the A/T gear position switch.

The cruise control unit sends operational signals to the

devices that regulate the throttle position. The throttle

position maintains the selected vehicle speed.

Essentially, the control unit compares the actual speed

of the vehicle to the selected speed. Then, the control

unit uses the result of that comparison to open or close

the throttle.

The brake switch releases the system's control of the

throttle at the instant the driver depresses the brake

pedal. The switch sends an electronic signal to the con-

trol unit when the brake pedal is depressed; the control

unit responds by allowing the throttle to close. The A/T

gear position switch sends a disengage signal input to

the control unit that also allows the throttle to close.
Operation:

The cruise control system will set and automatically

maintain any speed above 25 mph (40 km/h). To set a

speed, make sure that the main switch is in the "ON"

position. After reaching the desired speed, press the set

switch. The cruise control unit will receive a set signal

and, in turn, will actuate the cruise control actuator. If

you depress the set switch is when the cruise control

system is on, the "cruise light", an indicator in the

gauge assembly, will come on. You can cancel the

cruise control system by depressing the cancel switch or

by pushing the main switch to "OFF". This removes

power to the control unit and erases the set speed from

memory. If the system is disengaged temporarily by the

brake switch or the A/T gear position switch and vehicle

speed is still above 25 mph (40 km/h), press the resume

switch. With the resume switch depressed and the set

memory retained, the vehicle will automatically return

to the previous set speed.

For gradual acceleration without depressing the acceler-

ator pedal, push the resume switch down and hold it

there until the desired speed is reached. This will send

an acceleration signal to the control unit. When the

switch is released, the system will be reprogrammed for

the new speed. To slow the vehicle down, depress the

set switch. This will send a deceleration signal to the

control unit, causing the vehicle to coast. When you

reach the desired speed, release the set switch. This will

reprogram the system for the new speed.ProCarManuals.com

Component/Wiring Location s
Index
SRS INDICATO R LIGH T (I n th e gaug e assembly )
Troubleshooting , pag e 24-1 4 an d 24-3 9
Gaug e assembly , sectio n 2 3
To HOR N SWITC H
DASHBOAR D WIR E HARNES S
t o SR S INDICATO R LIGH T in
GAUG E ASSEMBL Y
5 P CONNECTO R
To DRIVER' S AIRBA G
FRONT PASSENGER' S AIRBA G
Replacement , pag e 24-6 7
Disposal , pag e 24-7 1
T
o CRUIS E CONTRO L
SET/RESUM E SWITC H
MAI N WIR E HARNES S
t o DASHBOAR D
WIR E HARNES S
16 P CONNECTO R
SR S MAI N HARNES S
to MAI NWIRE HARNES S
4 P ('95-9 6 Models) ,
3 P ('97-9 8 Models )
CONNECTO R SR
S MAI N HARNES S
t o FRON T PASSENGER' S
AIRBAG3P ('95-9 6 Models) ,
2 P ('97-9 8 Models )
CONNECTO R
SERVICE CHEC KCONNECTO R (2P )
[ORN , GRN/YEL ]
SR S MAI N HARNES S
SR S MAI N HARNES S
t o UNDER-DAS H
FUSE/RELAY BO X2P CONNECTO R
MEMOR Y ERAS E SIGNA L
(MES ) CONNECTO R (2P )
[GRY , GRY ] or [GRN , GRN ]SRS MAI N HARNES Sto SR S UNI T18P CONNECTO R SR
S UNI T GROUN D
SRS UNI T(Includin g safin g senso r
an d impac t sensor )
Replacement , pag e 24-7 7
CABL E REE LReplacement ,
pag e 24-7 3
DRIVER' S AIRBA G
Replacement ,
page 24-67Disposal , pag e 24-7 1
SR S MAI N HARNES S
to CABL E REE L2P CONNECTO R
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Description
The SR S is a safet y devic e which , whe n use d i n conjunctio n wit h th e sea t belt , i s designe d t o hel p protec t th e drive r an d
fron t passenge r i n a fronta l impac t exceedin g a certai n se t limit . Th e syste m consist s o f th e SR S uni t (includin g safin g sen -
so r an d impac t sensor) , th e cabl e reel , th e driver' s airbag , an d fron t passenger' s airbag .
Operatio n
Th e mai n circui t i n th e SR S uni t sense s an d judge s th e forc e o f impac t and , i f necessary , ignite s th e inflato r charges . I f bat -
ter y voltag e i s to o lo w o r powe r i s disconnecte d du e t o th e impact , th e voltag e regulato r an d th e back-u p powe r circui t
respectivel y wil l kee p voltag e a t a constan t level .
Fo r th e SR S to operate :
(1 ) Th e impac t senso r mus t activate , an d sen d electri c signal s t o th e microprocessor .
(2 ) Th e microprocesso r mus t comput e th e signals , an d mus t sen d signal s t o th e airba g inflators .
(3 ) Th e inflator s mus t ignit e an d deplo y th e airbags .
Self-diagnosi s Syste m
A self-diagnosi s circui t i s buil t int o th e SR S unit ; whe n th e ignitio n switc h i s turne d O N (II) , th e SR S indicato r ligh t come s
o n an d goe s of f afte r abou t si x second s if th e syste m is operatin g normally .
I f th e ligh t doe s no t com e on , o r doe s no t g o of f afte r si x seconds , o r i f i t come s o n whil e driving , i t indicate s a n abnormal -
it y i n th e system . Th e syste m mus t b e inspecte d an d repaire d a s soo n a s possible .
Fo r bette r serviceability , th e memor y wil l stor e th e caus e o f th e malfunction , an d th e dat a lin k circui t passe s o n th e infor -
matio n fro m th e memor y t o th e dat a lin k connecto r (DLC) . Thi s informatio n ca n b e rea d wit h th e Hond a PG M Teste r con -
necte d to th e DL C (16P) .
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