relay ACURA RL KA9 1996 Service User Guide

(From pag e 11-70 )
I s th e fus e OK ?
NO
Is th e fus e OK ?
YES
Chec k fo r a n ope n i n th e wire s
(IG P lines) :
1 . Disconnec t th e fue l injecto r
an d IA C valv e connectors .
2. Tur n th e ignitio n switc h O N (II) .3. Measur e voltag e betwee n
bod y groun d an d th e PC M
connecto r terminal s A1 3 an d
B1 individually .
Is ther e batter y voltage ?
YES
Repai r shor t i n th e wir e
betwee n No . 6 EC U (PCM ) (2 0
A ) fus e an d PGM-F I mai n
relay.Repai r shor t i n th e wir e
betwee n PGM-F I mai n rela y
an d th e PCM , fue l injectors ,
o r IA C valve .
Repai r shor t i n th e wir ebetwee n fue l injector s an d
IA C valve .
Replac e No . 6 EC U (PCM ) (2 0
A)fuse .
Repair shor t i n th e wir e
betwee n No . 2 5 IG COI L (3 0 A )
fus e an d PGM-F I mai n relay .
Replac e No . 2 5 IG COI L (3 0 A )
fuse .
Repai r ope n i n th e wire(s )
betwee n th e PC M (A13 , B9 )
an d PGM-F I mai n relay .
Chec k fo r a poo r connectio n
o r loos e wire s a t th e PGM-F I
mai n relay .
Test th e PGM-F I mai n relay .Repai r shor t o r ope n i n th e
wir e betwee n th e immobilize r
uni t an d PCM .
(T o pag e 11-72 )
Inspec
t No . 2 5 IG COI L (3 0 A ) fus e
in th e under-das h fuse/rela y box .
Inspec t No . 6 EC U (PCM ) (2 0 A )
fus e i n th e under-das h fuse/rela y
box.
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Idle Contro l Syste m
Idle Ai r Contro l (IAC ) Valv e
The HD S o r th e sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0511 : A proble m in th e Idl e Ai r Contro l (IAC )
valve circuit .
— Th e MI L ha s bee n reporte d on .
— DTCP051 1 i s stored .
Problem verification :1. D o th e PC M Rese t Procedure .
2 . Star t th e engine .
Is DTC P0511 indicated?
YES
Chec k fo r a n ope n i n the wir e
(IGP 1 line) :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e IA C valv e con -
nector .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Measur e voltag e betwee n bod y
groun d an d th e IA C valv e con -
necto r termina l No . 2 .
I s ther e batter y voltage ?
I s ther e batter y voltage ?
YES
Chec k th e IA C valv e function :
Momentaril y connec t PC M con -
necto r terminal s A 5 an d A1 2 wit h
a jumpe r wir e severa l times .
Doe s th e IA C valv e click ?
YES
Substitut e a known-goo d PC M
an d recheck . I f symptom/indica -
tio n goe s away , replac e th e origi -
nal PCM .
NO
Intermitten t failure , syste m is O K
a t thi s time . Chec k fo r poo r con -
nection s o r loos e terminal s a t
C253 , (locate d a t righ t shoc k
tower) , C12 9 (IA C valve ) an d
PCM .
Repai r ope n in th e wir e betwee n
IA C valv e an d PGM-F I mai n relay . Wir
e sid e o f femal e terminal s
Repai r ope n o r shor t i n th e wir e
betwee n PC M (AS ) an d IA C valve .
Replac e th e IA C valve .
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Electrical Troubleshooting

Troubleshooting Flowchart — A/T Clutch Pressure Control Solenoid Valve

• OBD II Scan Tool indicates Code

P0748.

• Self-diagnosis indicator light

indicates Code 16.

Measure A/T clutch pressure con-

trol solenoid valve Resistance at

Solenoid Connector:

1. Disconnect the shift solenoid

valve/A/T clutch pressure con-

trol solenoid valve harness 4P

connector.

2. Measure the resistance of the

A/T clutch pressure control

solenoid valve.

Is the resistance approx. 5 ?

YES

Check A/T Clutch Pressure

Control Solenoid Valve for a

Short Circuit:

1. Disconnect the E (26P) con-

nector from the PCM.

2. Check for continuity between

body ground and the E16 termi-

nal and E3 terminal individually.

Is there continuity?

NO

Measure A/T Clutch Pressure

Control Solenoid Valve Resistance:

1. Connect the shift solenoid

valve/A/T clutch pressure con-

trol solenoid valve harness 4P

connector.

2. Measure the resistance

between the E16 and E3 ter-

minals.

Is the resistance approx. 5 ?

YES

Check the VB SOL Voltage:

1. Disconnect the A (26P) and E

(26P) connectors from the

PCM.

2. Turn the ignition switch ON (II).

3. Measure the voltage between

the E1 and A26 terminals.

Is there voltage?

YES

Check for loose PCM connectors.

If necessary, substitute a known-

good PCM and recheck.
Possible Cause

• Disconnected A/T clutch pres-

sure control solenoid valve con-

nector

• Short or open in A/T clutch

pressure control solenoid valve

wire

• Faulty A/T clutch pressure con-

trol solenoid valve

• Open VB SOL line

Replace the A/T clutch pressure

control solenoid valve.

Repair short in the wires

between the E16 and E3 termi-

nals and the A/T clutch pressure

control solenoid valve.

Repair loose terminal or open in

the wires between the E16 and E3

terminals and the A/T clutch pres-

sure control solenoid valve.

Check for open in the wire

between the E1 terminal and the

under-hood fuse/relay box.ProCarManuals.com

Disconnect the connectors from the unit

Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained

A1

A7
BLK
Under all conditions
Check for continuity to ground:

There should be continuity.
• An open in the wire

Reconnect the connectors from the unit

Cavity Wire Test condition
Test: Desired result
Possible cause if result is not obtained

B2

B3

B4

B5

A12

A3

A9

A6

A10

A8

A5

A2

A4

B12

B14
BLU/YEL

YEL/GRN

ORN

WHT/GRN

BLU

PUR

ORN

ORN

BLU

BLK

ORN

GRN

PUR

PNK

GRN
Ignition switch in ACC (I)

Ignition switch in ACC (I)

With the ignition switch

OFF, press and hold the

"DOT" button. Turn the

ignition switch from OFF

to ACC three times and

back to ACC, then release

the "DOT" button.

Ignition switch in ACC (I)

Ignition switch in ACC (I)

Ignition switch turned

OFF

With the ignition switch

OFF, press and hold the

"DOT" button. Turn the

ignition switch from OFF

to ACC three times and

back to ACC, then release

the "DOT" button.

Ignition switch in ACC (I)

Under all conditions

Ignition switch in ACC (I)

Ignition switch in ACC (I)

OnStar "DOT" button

pushed

Ignition switch in ACC (I)

Ignition switch in ACC (I)

Ignition switch in ACC (I)

Ignition switch in ACC (I) On-

Star "DOT" button pushed

Ignition switch in ACC (I)
Check for voltage to ground:

There should be approx 8V.

Check for voltage to ground:

"DOT" button pushed: 280mV

"OnStar" button pushed: 1V

"Emergency" button pushed: 1.7V

Check for voltage to ground:

There should be 4V.

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

There should be no voltage.

Check for voltage to ground:

There should be 10V.

Check for voltage to ground:

There should be 4V.

Check for voltage to ground:

There should be less than 1V.

Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

"DOT" button pushed: 280mV

"OnStar" button pushed: 1V

"Emergency" button pushed: 1.7V

Check for voltage to ground:

There should be about 8V.

Check for voltage to ground:

There should be about 4V.
• Blown No. 56 (7.5 A) fuse in the

under-hood fuse/relay box

• An open in the wire

• Faulty OnStar button

• An open in the wire

• Faulty OnStar button

• An open in the wire

• Faulty OnStar button

• An open in the wire

• An open in the wire

• An open in the wire

• An open in the wire

• Poor ground (G401, G402)

• An open in the wire

• An open in the wire

• An open in the wire

• An open in the wire

• An open in the wire

• An open in the wire

• Faulty audio unit

• An open in the wire

• Faulty SRS unit

• An open in the wireProCarManuals.com

Symptom Troubleshootin g
No pictur e is displaye d
Diagnosti c Test : Navigatio n Syste m Lin k
1 . Chec k th e No . 5 6 (7.5A ) fus e in th e under-hoo d fuse /
rela y bo x an d No . 4 (10A ) fus e in th e under-das h fuse /
relay box , an d reinstal l th e fuse s i f the y are-OK .
Are the fuses OK?
YES—G o to ste p 2 .
NO—Replac e th e fus e an d recheck .
2 . Tur n th e ignitio n switc h t o AC C (I) .
3 . Operat e th e radi o an d liste n t o th e audio .
Can audio be heard?
YES—G o to ste p 4 .
NO—Chec k th e AC C circuit .
4 . Tur n th e ignitio n switc h O N (II) .
5 . Measur e th e voltag e betwee n bod y groun d an d navi -
gatio n uni t connecto r C (8P ) terminal s No . 1 an d No .
2 individually .
Wire sid e o f femal e terminal s
Is there battery voltage?
YES—G o to ste p 6 .
NO—I f th e + B wir e doe s no t hav e voltage , repai r
ope n in th e wir e betwee n th e under-hoo d fus e rela y
bo x an d th e navigatio n unit .
I f th e AC C wir e doe s no t hav e voltage , repai r ope n in
th e wir e betwee n th e under-das h fus e rela y bo x an d
th e navigatio n unit . 6
. Chec k fo r continuit y betwee n navigatio n uni t connec -
to r C (8P ) termina l No . 4 an d bod y ground .
NAVIGATIO N UNI T CONNECTO R C (8P )
Wire sid e o f femal e terminal s
Is there continuity?
YES—G o to ste p 7 .
NO—Repai r ope n i n th e wir e betwee n th e navigatio n
unit an d bod y groun d (G603) .
7 . Tur n th e ignitio n switc h OFF .
8 . Perfor m th e force d startin g o f th e displa y (se e pag e
23-52 )
Is the diagnosis menu of the picture diagnosis dis-
played?
YES—G o int o th e Diagnosti c mod e an d us e th e "Nav i
Syste m Link " diagnosti c (se e pag e 23-40 ) t o chec k
the links .
NO—G o to ste p 9 .
9 . Shiel d th e displa y uni t fro m th e su n wit h you r hand ,
an d chec k tha t th e displa y i s blac k (onl y bac k ligh t i s
ON) .
Can you see the back light?
YES—Replac e th e navigatio n uni t
(see pag e 23-53 ).
NO—Replac e th e displa y uni t (se e pag e 23-53 ).
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Display day/nigh t mod e doe s no t wor k
Diagnosti c Test : Ca r Statu s
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , ge t th e navigatio n syste m
anti-thef t codes .
• Afte r troubleshooting , ente r th e navigatio n syste m
anti-thef t codes .
1 . Chang e th e day/nigh t mod e t o "AUTO " unde r Set-up ,
an d recheck .
Doe s the display change to day and night modes?
YES—Th e syste m is O K a t thi s time .
NO—G o to ste p 2 .
2 . G o int o th e Diagnosti c Mod e an d us e diagnosti c th e
"Ca r Status " fo r a n IL L signa l (se e pag e 23-45 ) t o
check .
Is the "ILL" signal OK?
YES—Th e syste m is OK .
NO—Chec k th e IL L + circui t betwee n th e navigatio n
uni t an d tailligh t relay .
System lock s u p constantl y
Diagnostic Test : Uni t Chec k
1. Star t th e engin e an d tur n th e ignitio n switc h OFF ,
the n tur n th e ignitio n switc h O N (II) .
Doe s the system reboot?
YES—Th e syste m is O K a t thi s time .
NO—Chec k th e DV D fo r scratche s o r damag e an d th e
navigatio n uni t fo r wate r damage . I f OK , perfor m al l
o f th e "Uni t check " check s unde r Syste m Diagnosi s
Test (se e pag e 23-43 ).
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Car Status

This screen is used to confirm that navigation unit is

properly receiving input signals. Signals equal to (0) are

OFF, and signals equal to (1) are ON.If the value on the

display does not match the actual vehicle status, then

check the wire carrying the signal.

• CHG and CHG(CAN) are not used for this model.

• VSP-Vehicle Speed Pulse from PCM

(Pin 6 of C-connector)

a) OFF (0) when vehicle is not moving

b) ON (1) when vehicle is moving

The VSP comes from the PCM as a dedicated signal.

Internally, the navigation unit compares the actual VP on

the map against street data to adjust the pulse to speed

scaling factor. As this scaling factor becomes more

accurate, the "Level" gradually increases from 0 to 10

(see the Tire Calibrate diagnostic screen).

• BACK-Reverse indication from reverse relay

(Pin 5 of C-connector)

a) OFF (0) when shift lever is in any position other

than reverse

b) ON (1) when shift lever is in reverse

The Back signal is used by the navigation unit to allow

the map screen to show the VP moving backwards when

in reverse. This signal is needed because the Speed

Pulse has no direction indication.
• ILL-lllumination Indication

(Pin 5 of navigation unit A-connector)

a) OFF (0) when parking lights, or headlights are off

b) ON (1) when parking lights, or headlights are on

This signal is used by the navigation unit to determine

whether to put the navigation screen into the Day or

Night brightness mode. (Setup screen 1)

• DVD Lid-senses if DVD door is open

a) (Close) when door is closed

b) (Open) when door is open

The navigation unit has a micro switch to detect this. If

open is indicated when the door is closed, replace the

navigation unit.

• PC Card Lid-Senses if PC Card door is open

a) (Close) when door is closed

b) (Open) when door is open

The navigation unit has a micro switch to detect this. If

open is indicated when the door is slid shut, then

replace the navigation unit. This slot is for insertion of

PC Flash memory cards for gathering diagnostic infor-

mation. This is for factory use only.ProCarManuals.com

Starting Syste m
Componen t Locatio n Inde x
STARTE R CU T RELA YWire colors : BLK/WHT ,
BLK/WHT , BLK/WH T an d WHT/RE D
UNDER-DAS HFUSE/RELAY BO X
STARTE RTest, pag e 4- 5
Replacement , pag e 4- 6
Overhaul , pag e 4- 8
Solenoi d Test , pag e 4- 9Reassembly , pag e 4-1 4
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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 .
Alternat e Procedure :
Use followin g equipment :
— Ammeter , 0 - 40 0 A
— Voltmeter , 0 - 2 0 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 E
TERMINA L
NOTE: Afte r thi s test , o r an y subsequen t repair , rese t
th e PC 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 8 P an d 6 P connecto r fro m th e ICM .
6P CONNECTO R
ICM
8P CONNECTO R
2.
3.
Wit h th e shif t leve r i n o r , turn th e ignitio n
switc h 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 t o 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 .
Chec k th e battery , batter y positiv e cable , ground ,
starte r cu t relay , an d th e wir e connection s fo r loose -
nes 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 .
Unplu g th e connecto r (BLK/WH T wire ) fro m th e
starter . Mak e sur e th e shif t leve r i s 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 terminal . Th e starte r shoul d
cran k th e engine .
S (SOLENOID )
TERMINA L
BLK/WH T
WIRE
If 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 switch .
6 . Chec k th e starte r cu t relay .
7. Chec k fo r a n ope n i n th e wir e betwee n th e ignitio n
switch an d starter .
8 . Chec k th e immobilize r syste m (se e sectio n 23 ).
4 .
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Cruise Control

Control Unit Input Test (cont'd)

Cavity Wire
Test condition
Test: Desired result

Possible cause if result is not obtained

3

13

7

6

14

12

2

5

10

9

11

1
BLK

LT GRN

LT GRN/BLK

LT GRN/RED

PNK

BLU/WHT

GRY

GRN/WHT

BLU/YEL

BRN

BRN/BLK

BRN/WHT
Under all conditions

Ignition switch ON (II) and

main switch ON

Resume button pushed

Cancel button pushed

Set button pushed

Cancel button pushed

Shift lever in , or

Ignition switch ON (II), and

main switch ON; raise the

front of the vehicle, and rotate

one wheel slowly while

holding the other wheel.

Ignition switch ON (II), main

switch ON; brake pedal

pressed, then released

Brake pedal pressed then

released

Ignition switch ON (II)

Under all conditions

Under all conditions

Under all conditions
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 7, there

should be no voltage on terminal No. 6.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 7, there

should be voltage on terminal No. 6.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 6, there

should be no voltage on terminal No. 7.

Check for voltage to ground:

There should be battery voltage.

When testing terminal No. 6, there

should be voltage on terminal No. 7.

Check for continuity to ground:

There should be continuity.

NOTE: There should be no continuity

when the shift lever is in other positions.

Check for voltage between the

BLU/ WHT and BLK terminals:

There should be cycle 0 - 5 V or

battery voltage.

Check for voltage to ground:

There should be 0 V with the pedal

pressed, and battery voltage with

the pedal released.

Check for voltage to ground:

There should be battery voltage with

the pedal pressed, and 0 V with the

pedal released.

Attach to ground:

The cruise light in the gauge assembly

should come on.

Check for resistance to ground:

There should be 80 -120

Check for resistance to ground:

There should be 70 -110

Check for resistance to ground:

There should be 40 - 60
• Poor ground (G401, G402)

• An open in the wire

• Blown No. 20 (20 A) fuse in the

under-dash fuse/relay box

• Faulty main switch

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Short between LT GRN/BLK and

LT GRN/RED wires

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Short between LT GRN/BLK and

LT GRN/RED wires

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty horn relay

• Faulty set/resume/cancel switch

• Faulty cable reel

• An open in the wire

• Faulty A/T gear position switch

• Poor ground (G401, G402)

• An open in the wire

• Faulty vehicle speed sensor (VSS)

• An open in the wire

• Short to ground

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty brake switch

• An open in the wire

• Blown No. 39 (15 A) fuse in the

under-hood fuse/relay box

• Faulty brake switch

• An open in the wire

• Blown bulb

• Faulty gauge circuit

• An open in the wire

• Faulty actuator solenoid

• An open in the wireProCarManuals.com