1996 ACURA RL KA9 check engine light

TCS CONTROL UNIT 20P CONNECTOR

Wire side of female terminals

VB: Battery Voltage

Terminal

number

1

2

4

5

6

9

10

11

12

13

14

15

16

17

20
Wire

color

BLK/YEL

GRN/RED

BLU

PNK/BLU

BLK/WHT

BLK

BRN/WHT

GRN/WHT

BLU

GRN/ORN

BLK/ORN

BRN/BLK

WHT/BLU

BLU/GRY

GRN

BRN
Terminal sign

(Terminal name)

IG1

(Ignition 1)

PARK

(Parking)

SCS

(Service check

signal)

STR-GND

(Steering ground)

AT-SHIFT

(AT shift)

FSR

(Fail-safe relay)

PMG

(Power motor

Ground)

VPM

(Voltage power

motor)

STOP

(Stop)

NEP (Engine

speed pulse)

BARO

(Barometric)

TC-FC

(Traction control

fuel cut)

LG2

(Logic ground 2)

STR-VCC (Steer-

ing power supply)

WARN2

(Warning 2)

SH-MOT

(Shield motor)

MOT +

(Motor +)

MOT-

(Motor -)
Description

Detects ignition switch

IG1 signal

Detects parking brake

switch signal

Detects service check

connector signal

(Diagnostic trouble

code indication)

Ground for the steering

angle sensor

Detects A/T shift posi-

tion signal

Drives fail-safe relay

Power ground for the

TCS control valve

actuator motor

Power source for the

TCS control valve

actuator motor

Detects brake pedal

position switch signal

Detects engine speed

signal

Detects barometric

sensor signal

TCS Fl, Fuel cut

(torque down) signal

Ground for the logic

circuit

Power source for the

steering angle sensor

Drives TCS indicator light

(The indicator light comes

on by the self-bias)

Shield for the TCS con-

trol valve actuator motor

Drives TCS control

valve actuator motor

Drives TCS control

valve actuator motor
Measurement

terminals

1-GND

2

3-GND

4-GND

5-GND

6-GND

9-GND

10-GND

11-GND

12-GND

13-GND

14-GND

15-GND

16-GND

17-GND

19-20

20-19
Voltage

Conditions

(Ignition Switch ON (II))

Depress the parking

brake pedal.

Release the parking

brake pedal.

SCS service connector

connected.

SCS service connector

disconnected.

Shift the transmission

to position, then

start the engine.

Start the engine.

Start the engine.

Brake pedal depressed.

Brake pedal released.

Engine idling

TCS is functioning,

(maximum fuel cut)

TCS is not functioning.

Indicator light ON

Indicator light OFF

TCS is functioning.

TCS is not functioning.

TCS is functioning.

TCS is not functioning.
Output

voltage

VB

Below 0.6 V

VB

0V

5V

Below 0.3V

About 4V

(5V 0V)

VB

1.5V

Below 0.3 V

0V

VB

VB

0V

About 6V

(12V
0V)

About 3 V

About 1.5V

About 4.5 V

(5 V,
PWM)

Below 0.3V

About 5 V

About 2 V

VB

VB

0V

VB

0VProCarManuals.com

PGM-FI DTC : 3 5 (TC-ST B signa l doe s no t matc h TC-F C signal )
Check fo r a shor t t o bod y groun d
i n th e TC-ST B circuit :
1 . Disconnec t th e PC M connec -
to r C (12P ) an d TC S contro l
uni t 14 P connectors .
2 . Chec k fo r continuit y betwee n
th e TC S contro l uni t U P con -
necto r termina l No . 1 0 an d
bod y ground . TC
S CONTRO L UNI T 14 P CONNECTO R
Wir e sid e o f femal e terminal s
I s ther e continuity ? Repai
r shor t t o bod y groun d in
th e wir e betwee n th e PC M an d
TC S contro l unit .
TCS CONTRO L UNI T 20 P CONNECTO R
Chec k fo r a shor t t o bod y groun d
i n th e TC-F C circuit :
1 . Disconnec t th e TC S contro l
uni t 20 P connector .
2 . Chec k fo r continuit y betwee n
termina l No . 1 4 an d bod y
ground .
Is ther e continuity ?Repair shor t t o bod y groun d in
th e wir e betwee n th e PC M an d
TC S contro l unit . Wir
e sid e o f femal e terminal s
Chec k th e TC S contro l uni t (TC -
STB) :1. Connec t th e TC S contro l uni t
14 P an d 20 P connector s an d
PC M connecto r C (12P) .
2 . Rais e th e fron t o f th e vehicle ,
and suppor t i t wit h safet ystands.
3 . Star t th e engine .
4 . Measur e th e voltag e betwee n
th e TC S contro l uni t 14 P con -
necto r termina l No . 1 0 an d
bod y ground . TC
S CONTRO L UNI T U P CONNECTO R
Wir e sid e o f femal e terminal s
I s th e voltag e a s specified ?
TCS is functioning :about 0 V
TC S is no t functioning :
abou t 5 V Chec
k fo r loos e TC S contro l uni t
connectors . I f necessary , substi -
tut e a known-goo d TC S contro l
uni t an d recheck .
To pag e 19-17 4
NOTE : Sto p th e wheel s b y depressin g
th e brak e peda l lightly .
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Troubleshooting
DTC 83 : VS A Inhibitio n (cont'd )
(With DT C 35 fro m pag e 19-247 )
Check fo r a shor t t o bod y groun din th e T C ST B circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e PC M connec -
tor C (12P ) and th e VS A con -verte r uni t 26 P connector .
3 . Chec k fo r continuit y betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 4an d bod y ground .
I s ther e continuity ?
Check fo r a shor t t o bod y groun din th e T C F C circuit :
Chec k fo r continuit y betwee n th e
VS A converte r uni t 26 P connecto rterminal No . 2 2 an d bod y ground .
I s ther e continuity ?
Chec k the VSA converte r uni t
(TC STB) :1. Connec t th e VS A converte runit 26 P connecto r an d th ePC M connecto r C (12P) .2. Rais e th e fron t o f th e vehicle ,
an d suppor t i t wit h safet y
stands.3. Star t th e engine .
4 . Measur e th e voltag e betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 4
an d bod y ground .
I s th e voltag e a s specified ?
— VS A is functioning : abou t O V
— VS A is no t functioning : abou t5V
(T o pag e 19-249 )
VSA CONVERTE R UNI T 26 P CONNECTO R
Wire sid e o f femal e terminal s
Repair shor t t o bod y groun d i nth e wir e betwee n th e PC M an d
th e VS A converte r unit .
Repai r shor t t o bod y groun d i nth e wir e betwee n th e PC M an d
th e VS A converte r unit .
Chec k fo r loos e terminal s i n th eVS A converte r uni t 26 P connec -
tor . I f necessary , substitut e a
known-goo d VS A converte r unit ,
and recheck .
NOTE: Sto p th e wheel s b y pressin g th e
brak e peda l lightly .
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Problems an d Replacemen t Part s
Proble m
Master o r vale t ke y ha s bee n los t o r additiona l maste r o r vale t ke y is required .
Al l maste r an d vale t key s hav e bee n lost .
Learnin g ke y ha s bee n lost .
Immobilize r receive r doe s network .
Immobilize r contro l uni t doe s no t work .
PC M doe s no t work .
Ignitio n switc h doe s no t work .
Doo r ke y cylinde r ha s bee n broken . Part
s se t
PGM-Teste r
required?
YES
YES
YE S
NO
YE S
YE S
YES
NO (YES )
A
A x 2 , an d B
B
C
B
E
D
F (G )
Part s Set :
A: Vale t ke y
B : Immobilize r contro l uni t
Maste r ke y
Learnin g ke y
C : Immobilize r receive r
D : Ignitio n switc h wit h immobilize r receive r
Immobilize r contro l uni t
Maste r ke y
Learnin g ke yE: PC M
F: Doo r ke y cylinde r
Maste r key s fo r door s ope n o r locke d
G : Ignitio n switc h wit h immobilize r receive r
Immobilize r contro l uni t
Maste r ke y
Learnin g ke y
Doo r ke y cylinder s
Trun k ke y cylinde r
NOTE:
• Th e immobilize r syste m ca n stor e u p to fiv e ke y codes .
• I f i t i s necessar y t o rewrit e th e immobilize r contro l uni t t o lear n a ne w key , th e deale r need s th e customer' s vehicle , al l
it s maste r key s an d vale t keys , it s learnin g key , an d th e Hond a PG M Teste r equippe d wit h a n immobilize r progra m
card . An y ke y tha t i s no t learne d durin g rewritin g wil l n o longe r star t th e engine .
• I f th e custome r ha s los t hi s key , an d canno t star t th e engine , contac t Acur a Custome r Relation s o r Roadsid e Assistance .
Before Testing :
• Du e t o th e actio n o f th e immobilize r system , th e engin e take s slightl y mor e tim e t o star t tha n engine s o f vehicl e
withou t a n immobilize r system .
• Whe n th e syste m is normal , an d th e prope r ke y i s inserted , th e indicato r ligh t come s o n fo r 2 seconds , the n i t wil l g o
off .
• I f th e indicato r start s t o blin k afte r 2 seconds , o r i f th e engin e doe s no t start , repea t th e startin g procedure .
If th e engin e stil l doe s no t start , perfor m th e immobilize r contro l uni t inpu t tes t an d transponde r an d immobilize r
receive r test .
• I f al l th e inpu t test s an d transponde r an d immobilize r receive r tes t prov e OK , chec k th e PC M (se e sectio n 11 ).
I f th e PC M is OK , th e immobilize r contro l uni t mus t b e faulty ; replac e th e immobilize r contro l unit , maste r ke y an d
learnin g ke y together , an d the n rewrit e th e PC M wit h th e Hond a PG M Tester .
If th e PC M is faulty , substitut e a known-goo d PCM , an d recheck . However , sinc e th e known-goo d PC M ha s a
differen t cod e store d int o it , i t mus t b e rewritte n wit h th e Hond a PG M Tester . Otherwise , th e engin e wil l no t start .
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