stop start ACURA RL KA9 1996 Service Repair Manual

Precharge Brak e Lin e Bleedin g
1. Connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P ) locate d unde r th e glov e box .
2 . Pres s th e parkin g brak e pedal .
3 . Pres s th e VS A of f switch , an d hol d it .
4. Tur n th e ignitio n switc h O N (II) .
5. Releas e th e VS A of f switc h afte r th e VS A activatio n indicato r goe s of f twice .
6 . Pres s th e VS A of f switc h afte r th e VS A activatio n indicato r come s on .
7 . Releas e th e VS A of f switc h afte r th e VS A activatio n indicato r goe s off .
8 . Pres s th e VS A of f switc h afte r th e VS A activatio n indicato r start s blinking .
9 . Releas e th e VS A of f switc h afte r th e precharg e pum p moto r stop s running .
10 . Tur n th e ignitio n switc h OFF , the n repea t step s 2 throug h 1 0 fou r times .
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Yaw Rate

This diagnostic checks the yaw rate sensor in the control

unit. This device detects when the vehicle turns, and

repositions the vehicle posion icon on the map screen.

For more detailed information, see the yaw rate sensor

theory of operation under "System Description"

• "Sensor" indicates the voltage output from the yaw

rate sensor. It should indicate about 2.500 volts when

stopped.

• "Offset" is the reference voltage or standard within

the yaw rate sensor. It also should indicate about

2.500 volts when stopped.

• A "sensor" output voltage HIGHER than the "Offset"

voltage indicates that the vehicle is turning to the

right.

A "sensor" output voltage LOWER than the "Offset"

voltage indicates that the vehicle is turning to the left.

• The yaw rate offset, and sensor should both indicate

about 2.500 volts when stopped. If either reads zero,

or 5.000 volts, replace the navigation unit.
• The yaw rate offset and sensor should be within

0.01 V of each other when stopped. The sensor value

should change relative to the offset as the car is

turned while driving. If not, replace the navigation

unit.

• Auto tuning should always be on. If it is off, turn it

on.

• "Sensitivity study" represents the status of the inter-

nal tuning function. At initialization, this status of the

internal tuning function. At initialization, this value

starts at 6 and increases to # 10 as the internal correc-

tion values become more accurate.

• The settings "CCW Cal Factor", "CW Cal Factor", and

"Set" are for factory use only. THIS SHOULD NEVER

BE USED.ProCarManuals.com

Starting Syste m
Overrunnin g Clutc h Remova l
1. Pu t th e en d o f a pip e (inne r diamete r 1 3 m m (0.5 1 in) )
agains t th e pinio n stop , an d strik e th e pip e t o forc e
the pinio n sto p ove r th e sprin g clip .
A: 1 3 m m (0.5 1 in)
PINIO N STO P
PIPE
SPRIN G CLI P
PLANETAR Y GEA R SHAF T
NOTE: B e carefu l no t t o damag e th e planetar y gea r
shaft whe n strikin g th e pipe .
2. Remov e th e sprin g cli p the n pul l th e pinio n sto p
and overrunnin g clutc h of f th e shaft .
SPRIN G CLI P
PINIO N STO P
Starte r Reassembl y
NOTE: Us e th e illustratio n o n pag e 4- 8 a s referenc e fo r
reassembly .
1 . Pr y bac k eac h brus h sprin g wit h a screwdriver , the n
positio n th e brus h abou t halfwa y ou t o f it s holder ,
an d releas e th e sprin g t o hol d i t there .
2 . Instal l th e armatur e i n th e housing . Nex t pr y bac k
eac h brus h sprin g agai n an d pus h th e brus h dow n
unti l i t seat s agains t th e commutator , the n releas e
th e sprin g agains t th e en d o f th e brush .
3 . Instal l th e en d cove r o n th e brus h holder .
END COVE R
BRUSH HOLDE R
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Troubleshooting

How to Read Flowcharts

A flowchart is designed to be used from start to final repair. It's like a map showing you the shortest distance. But beware:

if you go off the "map" anywhere but a "stop" symbol, you can easily get lost.

Describes the conditions or situation to start a troubleshooting flowchart.

Asks you to do something; perform a test, set up a condition etc.

Asks you about the result of an action, then sends you in the appropriate troubleshooting direction.

(bold type)
The end of a series of actions and decisions, describes a final repair action and sometimes directs you to

an earlier part of the flowchart to confirm your repair.

NOTE:

• The term "Intermittent Failure" is used in these charts. It simply means a system may have had a failure, but it checks

out OK at this time. If the Malfunction Indicator Lamp (MIL) on the dash does not come on, check for poor connections

or loose wires at all connectors related to the circuit that you are troubleshooting (see illustration below).

• Most of the troubleshooting flowcharts have you reset the Powertrain Control Module (PCM) and try to duplicate the

Diagnostic Trouble Code (DTC). If the problem is intermittent and you can't duplicate the code, do not continue through

the flowchart. To do so will only result in confusion and, possibly, a needlessly replaced PCM.

• "Open" and "Short" are common electrical terms. An open is a break in a wire or at a connection. A short is an acci-

dental connection of a wire to ground or to another wire. In simple electronics, this usually means something won't

work at all. In complex electronics (like PCM's), this can sometimes mean something works, but not the way it's sup-

posed to.

TIGHT

LOOSE
(bold type)ProCarManuals.com

PGM-FI Syste m
System Descriptio n (cont'd )
3. Fue l Cut-of f Contro l
• Durin g deceleratio n wit h th e throttl e valv e closed , curren t t o th e injector s i s cu t of f t o improv e fue l econom y a t
speed s ove r 1,00 0 rpm .
• Fue l cut-of f actio n als o take s plac e whe n engin e spee d exceed s 5,90 0 rpm , regardles s o f th e positio n o f th e throttl e
valve, t o protec t th e engin e fro m over-revving .
4. A/ C Compresso r Clutc h Rela y
Whe n th e PC M receive s a deman d fo r coolin g fro m th e ai r conditionin g system , i t delay s th e compresso r fro m bein g
energized , an d enriche s th e mixtur e to assur e a smoot h transitio n t o th e A/ C mode .
5 . Evaporativ e Emissio n (EVAP ) Control .
Whe n th e engin e coolan t temperatur e i s abov e 99° F (37°C) : '9 6 - 9 9 models , 140° F (60°C) : '0 0 - 0 4 models , th e PC M
control s th e EVA P caniste r purg e valv e whic h control s vacuu m to th e EVA P canister .
6 . Intak e Manifol d Runne r Contro l (IMRC )
Whe n engin e spee d i s belo w 3,20 0 rpm , th e IMR C Solenoi d Valv e 1 an d IMR C Solenoi d Valv e 2 ar e activate d b y a sig -
na l fro m th e PCM . Intak e ai r flow s throug h a lon g chambe r path , increasin g torqu e a t lo w RPM .
Whe n engin e spee d is 3,20 0 - 3,80 0 rpm , th e IMR C Solenoi d Valv e is deactivate d b y th e PCM . Intak e ai r flow s throug h a
shor t chambe r path , increasin g mid-rang e torque .
Whe n th e engin e rp m is abov e 3,80 0 rpm , th e IMR C Solenoi d Valv e 1 an d IMR C Solenoi d Valv e 2 ar e deactivate d b y th e
PCM . Thi s create s a ver y shor t intak e pat h an d increase s high-spee d torque .
7 . Exhaus t Ga s Recirculatio n (EGR ) Contro l
Whe n th e EG R is require d fo r contro l o f oxide s o f nitroge n (NOx ) emissions , th e PC M control s th e EG R contro l valv e
vacuu m solenoi d valv e whic h supplie s regulate d vacuu m to th e EG R valve .
EC M Fail-safe/Back-u p Function s
1. Fail-saf e Functio n
When a n abnormalit y occur s i n a signa l fro m a sensor , th e PC M ignore s tha t signa l an d assume s a pre-programme d
valu e fo r tha t senso r tha t allow s th e engine to continu e t o run .
2 . Back-u p Functio n
Whe n a n abnormalit y occur s i n th e PC M itself , th e fue l injector s ar e controlle d b y a back-u p circui t independen t o f th e
syste m in orde r t o permi t minima l driving .
3 . Self-diagnosi s Functio n [Malfunctio n Indicato r Lam p (MIL) ]
Whe n a n abnormalit y occur s i n a signa l fro m a sensor , th e PC M supplie s groun d fo r th e MI L an d store s th e DT C in
erasabl e memory . Whe n th e ignitio n i s initiall y turne d on , th e PC M supplie s groun d fo r th e MI L fo r 2 second s t o chec k
the MI L bul b condition .
4. Tw o Tri p Detectio n Metho d ('9 6 - 9 7 models )
T o preven t fals e indications , th e Tw o Tri p Detectio n Metho d i s use d fo r th e HO2S , fue l metering-related , idl e contro l
system , EC T sensor , EG R syste m self-diagnosti c function s an d EVA P contro l system . Whe n a n abnormalit y occurs , th e
PC M store s i t i n it s memory . Whe n th e sam e abnormalit y recur s afte r th e ignitio n switc h i s turne d OF F an d O N (II )
again , th e PC M inform s th e drive r b y lightin g th e MIL .
However , t o eas e troubleshooting , thi s functio n i s cancelle d whe n yo u shor t th e servic e chec k connector . Th e MI L wil l
the n blin k immediatel y whe n a n abnormalit y occurs .
5 . Tw o Drivin g Cycl e Detectio n Metho d ('9 6 - 9 7 models )
A "Drivin g Cycle " consist s o f startin g th e engine , beginnin g close d loo p operation , an d stoppin g th e engine . I f misfir -
in g tha t increase s emissions , EVA P contro l syste m malfunctio n o r TW C deterioratio n i s detecte d durin g tw o consecu -
tiv e drivin g cycles , th e PC M turn s th e MI L on .
However , t o eas e troubleshooting , thi s functio n i s cancelle d whe n yo u shor t th e servic e chec k connector . Th e MI L wil l
the n blin k immediatel y whe n a n abnormalit y occurs .
6 . Tw o Drivin g Cycl e Detectio n Metho d ('9 8 - 0 4 models )
T o preven t fals e indications , th e "tw o drivin g cycl e detectio n method " i s use d fo r th e HO2S , fue l metering-related , idl e
contro l system , EC T sensor , EG R system , TW C an d EVA P contro l syste m an d othe r self-diagnosti c functions . Whe n a n
abnormalit y occurs , th e PC M store s it i n it s memory . Whe n th e sam e abnormalit y recur s afte r switc h is turne d OF F an d
O N (II ) again , th e PC M inform s th e drive r b y turnin g o n th e MIL .
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How to Set Readiness Codes

Catalytic Converter

NOTE:

• Do not turn the ignition switch OFF.

• When the battery negative cable is disconnected, all

readiness codes are cleared.

Required condition ('96 - 97 models):

• Ambient temperature between 32 - 95°F (0 - 35°C).

• Altitude below 2,400 m (7,874 ft.).

Required condition ('98 - 01 models):

Ambient temperature between 20 - 95°F (-7 - 35°C).

1. Connect the scan tool to the Data Link Connector

(DLC).

2. Start the engine. Hold it at 3,000 rpm with no load

(in Park or neutral) until the radiator fan comes on.

3. Drive for about 10 minutes without stopping on a

highway or freeway. Your speed can vary.

4. '96 - 97 models:

With the transmission in D4 position, drive at a

steady speed between 33 - 37 mph (53 - 59 km/h)

for 30 seconds.

'98 - 01 models:

With the A/T in D4 position, drive at a steady speed

between 50 - 62 mph (80 - 100 km/h) for 30 sec-

onds.

5. Do step 4 three times. Between each repetition,

close the throttle completely for 1 - 2 seconds. If the

engine is stopped during this part of the procedure,

go to step 3 and do the procedure again.

6. Check for the readiness code with the scan tool.

EGR Monitor

NOTE:

• Do not turn the ignition switch OFF.

• When the battery negative cable is disconnected, all

readiness codes are cleared.

Required condition ('96 - 97 models):

Altitude below 2,400 m (7,874 ft.).

1. Connect the scan tool to the Data Link Connector

(DLC).

2. Start the engine, and hold it at 3,000 rpm with no

load (in Park or neutral) until the radiator fan comes

on.

3. Drive at a steady speed with the transmission in D4

position, between 50 - 62 mph (80 - 100 km/h) for

more than 10 seconds.

4. With the A/T in D4 position, decelerate from 62 mph

(100 km/h) by completely releasing the throttle for

at least 5 seconds. If the engine is stopped during

this procedure, go to step 3 and do the procedure

again.

5. Check for the readiness code with the scan tool.
EVAP Leak Monitor

NOTE:

• When the battery negative cable is disconnected, all

readiness codes are cleared.

• If the engine is stopped while doing the procedure

between stops 6 and 16, do this procedure from step

1 again.

1. Make sure the gasoline level is 60 - 90% of fuel tank

capacity (not full).

2. Turn the ignition switch OFF.

3. Let the vehicle sit more than 8 hours.

4. '96 - 97 models:

Make sure the outside temperature is 32 - 95°F (0 -

35°C).

'98 - 01 models:

Make sure the outside temperature is 20 - 95°F (-7 -

35°C).

5. Connect the scan tool to the Data Link Connector

(DLC).

6. Start the engine and drive for about 15 minutes.

7. '96 - 97 models:

Keep the vehicle at a steady speed between 50 - 62

mph (80 - 100 km/h), without moving the accelera-

tor pedal, for about 1 minute.

'98 - 01 models:

Keep the vehicle at a steady speed between 50 - 70

mph (80 - 114 km/h), without moving the accelera-

tor pedal, for about 1 minute.

8. Stop the vehicle (do not stop engine).

9. Repeat steps 7 and 8 two more times.

10. Check for the readiness code with the scan tool. If

the readiness code does not set, go to step 11.

11. When ambient temperature is less than 32°F (0°C),

hold the engine at 3,000 rpm with no load (in Park

or neutral) until the radiator fan comes on.

12. When ambient temperature is more than 86°F

(30°C), remove the fuel fill cap, then install the fuel

fill cap.

13. After step 12, drive for about 20 minutes on a free-

way.

14. '96 - 97 models:

Keep the vehicle at a steady speed between 50 - 62

mph (80 - 100 km/h), without moving the accelera-

tor pedal, for about 1 minute.

'98 - 01 models:

Keep the vehicle at a steady speed between 50 - 70

mph (80 - 114 km/h), without moving the accelera-

tor pedal, for about 1 minute.

15. Stop the vehicle (do not stop the engine).

16. Repeat steps 14 and 15 two more times.

17. Check for the readiness code with the scan tool.ProCarManuals.com

PGM-FI System

How to Set Readiness Codes (cont'd)

HO2S Monitor

NOTE:

• Do not turn the ignition switch OFF.

• When the battery negative cable is disconnected, all

readiness codes are cleared.

Required condition ('96 - 97 models):

• Ambient temperature between 32 - 95°F (0 - 35°C).

• Altitude below 2,400 m (7,874 ft.).

Required condition ('98 - 01 models):

Ambient temperature between 20 - 95°F (-7 - 35°C).

1. Connect the scan tool to the Data Link Connector

(DLC).

2. Start the engine, and hold it at 3,000 rpm with no

load (in Park or neutral) until the radiator fan comes

on.

3. Let the engine idle for 5 seconds.

4. Drive at a steady speed between 50 - 62 mph (80 -

100 km/h) for about 2 minutes.

5. With the A/T in D4 position, decelerate from 62 mph

(100 km/h) by completely releasing the throttle for

at least 5 seconds. If the engine is stopped during

this procedure, go to step 4 and do the procedure

again.

6. Check for the readiness code with the scan tool.

HO2S Heater Monitor

NOTE: When the battery negative cable is disconnected,

all readiness codes are cleared.

1. Connect the scan tool to the Data Link Connector

(DLC).

2. Start the engine, and let the engine idle for 10 min-

utes.

3. Check for the readiness code with the scan tool.ProCarManuals.com

Description
(cont'd)
Gear Selectio n
The shif t leve r ha s seve n positions : PARK , REVERSE , NEUTRAL , 1s t throug h 4t h gea r ranges , 1s t throug h
3rd gea r ranges , 2n d gea r an d 1s t gear .
Positio n Description
PARK
REVERS E
NEUTRAL
DRIVE
(1st throug h 4th )
DRIV E
(1st throug h 3rd )
SECON D
FIRST
Front wheel s locked ; par k paw l engage d wit h par k gea r o n countershaft . Al l clutche s released .
Reverse ; revers e clutc h engaged .
Al l clutche s released .
Genera l driving ; start s of f i n 1st , shift s automaticall y t o 2nd , 3rd , the n 4th , dependin g o n vehicl e
spee d an d throttl e position . Downshift s throug h 3rd , 2n d an d 1s t o n deceleratio n t o stop . Th e lock -
up mechanis m come s int o operatio n i n positio n i n 2nd , 3r d an d 4t h gear .
Us e fo r rapi d acceleratio n a t highwa y speed s an d genera l driving ; up-hil l an d down-hil l driving ; start s
of f i n 1st , shift s automaticall y t o 2nd , the n 3rd , dependin g o n vehicl e spee d an d throttl e position .
Downshift s throug h 2n d t o 1s t o n deceleratio n t o stop . Th e lock-u p mechanis m come s int o operatio n
i n 3r d speed .
Us e fo r engin e brakin g o r bette r tractio n startin g of f o n loos e o r slipper y surfaces ; stay s i n 2n d
gear , doe s no t shif t u p o r down .
Us e fo r engin e braking ; stay s i n 1s t gear , doe s no t shif t up .
Startin g i s possible only i n an d position s throug h th e us e o f a slide-type , neutral-safet y switch .
Automati c Transaxl e (A/T ) Gea r Positio n Indicato r
Th e A/ T gea r positio n indicato r i n th e instrumen t pane l show s whic h gea r ha s bee n selecte d withou t havin g t o loo k dow n
a t th e console .
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Position

As the engine turns, the ATF pump also starts to operate. Automatic transmission fluid (ATF) is drawn from (99) and dis-

charged into (1). Then, ATF flowing from the ATF pump becomes the line pressure (1). The line pressure (1) is regulated

by the regulator valve. The torque converter inlet pressure (92) enters (94) of the torque converter through the lock-up

shift valve and discharges into (90). The torque converter check valve prevents the torque converter pressure from rising.

Under this condition, the hydraulic pressure is not applied to the clutches as the manual valve stops line pressure (1).

NOTE:

• When used, "left" or "right" indicates direction on the hydraulic circuit.

• The hydraulic circuit is for '96 - '98 models. On '99 - 01 models, the 2nd accumulator is different.ProCarManuals.com

Pressure Testing

(cont'd)

6. Disconnect the transmission sub-harness connector (14P).

7. Start the engine, and run it at 2,000 rpm.

Terminal side of female terminals

8. Shift to the or position, and measure line pressure at the fully opened throttle condition.

9. Connect battery voltage to the A/T clutch pressure control solenoid valve terminals of the transmission sub-harness

connector as shown.

10. Measure line pressure at the fully closed throttle condition.

If line pressure is out of specification, check and repair probable cause in the table below.

11. Stop the engine, and connect the transmission sub-harness connector (14P).

12. Disconnect the special tool from line pressure inspection hole, and connect the special tool to each inspection hole.

13. Start the engine, and run it as 2,000 rpm.
TRANSMISSION SUB-HARNESS

CONNECTOR (14P)ProCarManuals.com