sensor ACURA RL KA9 1996 Service Repair Manual

Automatic Insid e Dimmin g Mirro r
Descriptio n ('0 2-04 Mode l USA )
The automati c dimmin g ha s a front-facin g lu x leve l sensor , a rear-facin g lu x leve l sensor , an d a contro l unit . Th e contro l
uni t receive s signal s fro m eac h sensor . Base d o n th e differenc e betwee n th e tw o lu x level s (th e ligh t outsid e th e vehicl e
an d th e ligh t fro m th e headlight s o f th e othe r vehicle , etc.) , th e contro l uni t control s th e electro-chromi c ge l t o reduc e th e
glare . Thi s dimmin g functio n is cancele d whe n th e transmissio n i s i n reverse , o r whe n th e automati c insid e dimmin g mir -
ro r switc h is turne d OFF .
BACKWAR D LU XLEVE L SENSO R
SWITCHFORWAR D LU XLEVE L SENSO R
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Troubleshooting
Diagnostic Troubl e Cod e (DTC ) Char t (cont'd )
DTC(MI L indication )
P0139 (63)*2
P014 1 (65 )
P0153 (61)*2
P015 4 (1 )
P015 5 (41 )
P017 1 (46)*
2
P017 2 (46)*2
P017 4 (45)*2
P017 5 (45)*2
P030 0
P0325 (53 )
P033 0 (23 )
Detection Ite m
Secondar y Heate d Oxyge n Senso r(Secondar y H02S ) Slo w Respons e
(Sensor 2 )
Secondar y Heate d Oxyge n
Senso r (Secondar y HO2S ) Heate r
Circui t Malfunctio n (Senso r 2 )
Lef t Primar y Heate d Oxyge n
Senso r (Lef t Primar y HO2S ) Slo w
Respons e (Ban k 2 , Senso r 1 )
Lef t Primar y Heate d Oxyge n
Senso r (Lef t Primar y HO2S )
Heater Syste m Malfunctio n
Left Primar y Heate d Oxyge n
Sensor (Lef t Primar y H02S )
Heate r Circui t Malfunctio n (Ban k
2 , Senso r 1 )
Fue l Syste m To o Lea n [Righ t
Ban k (Ban k 1) ]
Fue l Syste m To o Ric h [Righ t Ban k
(Ban k 1) ]
Fue l Syste m To o Lea n [Lef t Ban k
(Ban k 2) ]
Fue l Syste m To o Ric h [Lef t Ban k
(Ban k 2) ]
Rando m Misfir e
Right Knoc k Senso r (Ban k 1 )Circui t Malfunctio n
Left Knoc k Senso r (Ban k 2 )Circui t Malfunctio n
Probable Caus e
• Secondar y H02 S (Senso r 2 )
• Ope n o r shor t i n Secondar y H02 S
(Senso r 2 ) heate r circui t
• PC M
• Lef t Primar y H02 S (Ban k 2 , Senso r 1 )
• Exhaus t syste m
• Ope n i n Lef t Primar y H02 S (Ban k 2 ,
Senso r 1 ) circui t
• Lef t Primar y H02 S (Ban k 2 , Senso r 1 )
• PC M
• Ope n o r shor t i n Lef t Primar y HO2 S
(Ban k 2 , Senso r 1 ) heate r circui t
• PC M
• Fue l suppl y syste m
• Righ t Primar y H02 S (Ban k 1 , Senso r 1 )
• MA P senso r
• Contaminate d fue l
• Valv e clearanc e
• Exhaus t leakag e
• Fue l suppl y syste m
• Righ t Primar y HO2 S (Ban k 1 , Senso r 1 )
• MA P senso r
• Contaminate d fue l
• Valv e clearanc e
• Fue l suppl y syste m
• Lef t Primar y H02 S (Ban k 2 , Senso r 1 )
• MA P senso r
• Contaminate d fue l• Exhaus t leakag e
• Fue l suppl y syste m
• Lef t Primar y H02 S (Ban k 2 , Senso r 1 )
• MA P senso r
• Contaminate d fue l
• Ignitio n syste m
• Fue l suppl y syste m
• MA P senso r
• EG R syste m
• Contaminate d fue l• Lac k o f fue l
• Ope n o r shor t i n Righ t Knoc k Senso r
(Ban k 1 ) circui t
• Righ t Knoc k Senso r (Ban k 1 )
• PC M
• Ope n o r shor t i n Lef t Knoc k Senso r
(Bank 2 ) circui t• Lef t Knoc k Senso r (Ban k 2 )• PC M
Page
11-5 1
11-5 3
11-57
11-5 7
11-5 7
11-5 7
11-5 9
*2: Thes e DTC s requir e tw o "trips " o r tw o drivin g cycle s unles s th e SC S servic e connecto r i s connected .
11-90
11-91
11-91
11-95
11-95
ProCarManuals.com

DTC(MI L indication )
P0345 (4 )
P0349 (4 )
P0390 (9 )
P0394 (9 )
P0401 (80)*2
P040 4 (12 )
P0406 (12 )
P042 0 (67)*
2
P045 1 (91 )
P0452 (91 )
P0453 (91 )
P0497 (90)*2
P050 6 (14)*2
P050 7 (14)*2
Detectio n Ite m
Crankshaf t Positio n (CKP ) 1
Senso r Circui t N o Signa l
Crankshaf t Positio n (CKP ) 1
Senso r Intermitten t Interruptio n
Camshaf t Positio n (CMP ) (Cylinde r
Positio n (CYP) ) 1 Senso r Circui t
N o Signa l
Camshaf t Positio n (CMP ) (Cylinde r
Positio n (CYP) ) 1 Senso r
Intermitten t Interruptio n
Exhaust Gas Recirculatio n (EGR )Insufficien t Flo w
Exhaus t Ga s Recirculatio n (EGR )
Valv e Insufficien t Lif t
EG R Valv e Lif t Senso r
High Voltag e
Catalys t Syste m Efficienc y Belo w
Threshol d
Fue l Tan k Pressur e (FTP ) Senso r
Circui t Range/Performanc e
Fue l Tan k Pressur e (FTP ) Senso r
Circui t Lo w Voltag e
Fue l Tan k Pressur e (FTP ) Senso r
Circui t Hig h Voltag e
Evaporativ e Emissio n (EVAP )
Syste m Lo w Purg e Flo w
Idl e Contro l Syste m RP M Lowe r
Tha n Expecte d
Idl e Contro l Syste m RP M Highe r
Tha n Expecte d Probabl
e Caus e
• CK P 1 Senso r
• CK P 1 Senso r circui t
• PC M
• CK P 1 Senso r
• Timin g bel t skippe d teet h
• CM P (CYP ) 1 Senso r
• CM P (CYP ) 1 Senso r circui t
• PC M
• CM P (CYP ) 1 Senso r
• EG R valv e
• EG R lin e
• EG R valv e (wit h positio n sensor )
• EG R valv e positio n senso r circui t
• EG R valv e vacuu m contro l solenoi d valv e
• EG R valv e vacuu m contro l solenoi d valv e
circui t
• EG R lin e• PC M
• EG R valv e (wit h positio n sensor )• EG R valv e positio n senso r circui t• PC M
• Thre e Wa y Catalyti c converte r
• Secondar y HO2 S
• FT P Senso r
• PC M
• Ope n o r shor t i n FT P senso r circui t
• FT P Senso r
• PC M
• Ope n in FT P Senso r circui t
• FT P Senso r
• PC M
• EVA P caniste r purg e valv e
• EVA P caniste r ven t shu t valv e
• IA C valv e
• Throttl e bod y
• IA C valv e
• IA C therma l valv e
• Throttl e bod y
Page
11-6 4
11-6 4
11-6 4
11-6 4
11-85
11-9 0
11-10 2
11-76
11-7 8
*2: Thes e DTC s requir e tw o "trips " o r tw o drivin g cycle s unles s th e SC S servic e connecto r i s connected .
(cont'd)
11-167
11-165
11-177
11-178
11-180
ProCarManuals.com

DTC(MIL indication )
P1386 (59 )
P138 7 (59 )
P145 6 (90)*
2
P145 7 (90)*2
P148 6 (87 )
P169 0 (35 )
P169 6 (36 )
PI 69 7 (36 )
P17xx (70 ) *3
P219 5 (2)*2
P219 7 (1)*2
P222 7 (13 )
P2228 (13 )
P2229 (13 )
Detection Ite m
Camshaf t Positio n (CMP ) (Cylinde r
Positio n (CYP) ) 2 Senso r
Intermitten t Interruptio n
Camshaft Positio n (CMP ) (Cylinde r
Positio n (CYP) ) 2 Senso r
Circuit N o Signa l
Evaporativ e Emissio n (EVAP )
Contro l Syste m Leakag e (Fue l
Tan k System )
Evaporativ e Emissio n (EVAP )
Contro l Syste m Leakag e (EVA P
Caniste r Area )
Coolin g Syste m Malfunctio n
TCST B Lin e Failur e
TCF C Signa l
Lo w Voltag e
TCF C Signa l
Hig h Voltag e
Automati c Transaxl e Syste m
Malfunctio n
Right Primar y Heate d Oxyge n
Senso r (Righ t Primar y HO2S )
Circui t Lo w Voltag e (Ban k 1 ,
Senso r 1 )
Lef t Primar y Heate d Oxyge n
Senso r (Lef t Primar y H02S )
Circui t Lo w Voltag e (Ban k 2 ,
Senso r 1 )
Barometri c Pressur e (BARO )
Senso r Circui t Range /
Performanc e Proble m
Barometri c Pressur e (BARO )
Senso r Circui t Lo w Voltag e
Barometri c Pressur e (BARO )
Senso r Circui t Hig h Voltag e Probabl
e Caus e
• CM P (CYP ) 2 Senso r
• CM P (CYP ) 2 Senso r
• CM P (CYP ) 2 Senso r circui t
• PC M
• Vacuu m connectio n
• Fue l tan k
• FT P senso r
• Fuel fill ca p• EVA P bypas s solenoi d valv e
• EVA P tw o wa y valv e
• EVA P caniste r ven t shu t valv e
• EVA P caniste r
• EVA P caniste r purg e valv e
• Vacuu m connectio n
• EVA P caniste r
• FT P senso r
• EVA P bypas s solenoi d valv e
• EVA P tw o wa y valv e
• EVA P caniste r ven t shu t valv e• Fue l tan k
• EVA P caniste r purg e valv e
• Radiato r Fa n Circui t
• Thermosta t
• TCST B Lin e
• VS A converte r uni t
• PC M
• TCF C Lin e
• VS A converte r uni t
• PC M
• TCF C Lin e• VS A converte r uni t• PC M
• Shor t i n Righ t Primar y H02 S (Ban k 1 ,
Senso r 1 ) circui t
• Righ t Primar y HO2 S (Ban k 1 , Senso r 1 )
• Fue l suppl y syste m
• PC M
• Shor t i n Lef t Primar y H02 S (Ban k 2 ,
Senso r 1 ) circui t
• Lef t Primar y H02 S (Ban k 2 , Senso r 1 )
• Fue l suppl y syste m
• PC M
• PC M (Bar o sensor )
• PC M (Bar o sensor )
• PC M (Bar o sensor ) Pag
e
11-6 4
11-6 4
11-9 2
11-97
11-6 7
Sectio n 1 9
Sectio n 1 9
Sectio n 1 9
Sectio n 1 4
11-5 4
11-5 4
11-6 8
11-6 9
11-6 9
*2: Thes e DTC s requir e tw o "trips " o r tw o drivin g cycle s unles s th e SC S servic e connecto r i s connected .*3: Th e indicato r ligh t an d th e Malfunctio n Indicato r Lam p (MIL ) ma y com e o n simultaneously .
(cont'd)
ProCarManuals.com

Troubleshooting
Diagnostic Troubl e Cod e (DTC ) Char t (cont'd )
DTC(MI L indication )
P2297 (2 )
P2298 (1 )
Detection Ite m
Righ t Primar y Heate d Oxyge n
Senso r (Righ t Primar y H02S )
Circui t Hig h Voltag e
(Ban k 1 , Sensor . 1 )
Lef t Primar y Heate d Oxyge n
Senso r (Lef t Primar y H02S )
Circui t Hig h Voltag e
(Ban k 2 , Senso r 1 ) Probabl
e Caus e
• Righ t Primar y H02 S (Ban k 2 , Senso r 1 )
• Shor t i n Righ t Primar y H02 S (Ban k 2 ,
Senso r 1 ) circui t
• Fue l suppl y syste m
• PC M
• Lef t Primar y HO2 S (Ban k 2 , Senso r 1 )
• Shor t i n Lef t Primar y H02 S (Ban k 2 ,
Senso r 1 ) circui t
• Fue l suppl y syste m
• PC M
Pag e
11-5 6
11-5 6
ProCarManuals.com

Engine Coolant Temperature (ECT) Sensor

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0116: A range/performance problem in the

Engine Coolant Temperature (ECT) sensor.

The ECT Sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases as the engine

coolant temperature increases as shown below.

NOTE: If DTC P0117 and/or P0118 are stored at the same time as DTC P0116 and/or P0125, troubleshoot those DTCs first,

then troubleshoot DTC P0116 and/or P0125.

Possible Cause

• ECT sensor deterioration

• Malfunction in the thermostat and the cooling system

Troubleshooting Flowchart

— The MIL has been reported on.

— DTC P0116 is stored.

Problem verification:

1. Turn the ignition switch OFF.

2. Check the ETC output tempera-

ture or voltage with the HDS or

the scan tool.

Is about 176°F (80°C) or high-

er, or 0.86 V or less indicated?

YES

Problem verification:

1. Note current coolant

temperature.

2. Turn the ignition switch OFF.

3. Cool the engine for 1 hour.

4. Check the ETC output temper-

ature or voltage with the HDS

or the scan tool.

Does the ECT change 3.6°F

(2°C) or more?

NO

Replace the ECT sensor.
NO

YES
Problem verification:

1. Note current coolant

temperature.

2. Start the engine. Hold the

engine speed at 3,000 rpm

with no load (in Park or neu-

tral)
until
the
radiator
fan

comes on, then let it idle.

3. Check the ETC output temper-

ature or voltage with the HDS

or the scan tool.

Does the ECT change 3.6°F

(2°C) or more?
NO

YES

Intermittent failure, system is OK

at this time. Check the thermo-

stat and the cooling system.

Intermittent failure, system is OK

at this time. Check the thermo-

stat and the cooling system.

(cont'd)ProCarManuals.com

PGM-FI System

Engine Coolant Temperature (ECT) Sensor (cont'd)

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0125: Engine Coolant Temperature

(ECT) sensor malfunction/slow response.

Is about 86°F (30°C) or less, or

2.61 V or higher indicated?
Intermittent failure, system is OK

at this time.

Check the thermostat and the

cooling system.

YES

Problem verification:

1. Let it idle for 6 minutes.

2. Check the ETC output temper-

ature or voltage with the HDS

or the scan tool.

Is about 86°F (30°C) or less, or

2.61 V or higher indicated?
Intermittent failure, system is OK

at this time.

Check the thermostat and the

cooling system.

YES

Replace the ECT sensor.

11-50
Problem verification:

1. Start the engine, and let it idle.

2. Check the ETC output temper-

ature or voltage with the HDS

or the scan tool.
— The MIL has been reported on

— DTC P0125 is stored.ProCarManuals.com

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0133: A slow response problem in the Right

Primary Heated Oxygen Sensor (Right Primary H02S) (Bank 1, Sensor 1) circuit.

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0153: A slow response problem in the Left

Primary Heated Oxygen Sensor (Left Primary HO2S) (Bank 2, Sensor 1) circuit.

Description

By controlling the air/fuel ratio with a Primary HO2S (Sensor 1) and a Secondary HO2S (Sensor 2), the deterioration of the

Primary H02S (Sensor 1) can be evaluated by its feedback period. When the feedback period of the H02S exceeds a certain

value during stable driving conditions, the sensor will be judged as deteriorated. When deterioration has been detected dur-

ing two consecutive trips, the MIL comes on and DTC P0133 or P0153 will be stored.

NOTE: If DTC P2195, P0134, P2297 and/or P0135 are stored at the same time as DTC P0133, troubleshoot those DTCs first,

then troubleshoot DTC P0133. If DTC P2197, P0154, P2298 and/or P0155 are stored at the same time as DTC P0153, trou-

bleshoot those DTCs first, then troubleshoot DTC P0153.

Possible Cause

• Primary HO2S (Sensor 1) Deterioration

• Primary H02S Heater (Sensor 1) Deterioration

• Exhaust system leakage
Primary Heated Oxygen Sensor (HO2S) (Sensor 1)

The Heated Oxygen Sensors (HO2S) detect the oxygen content in the exhaust gas and signal the PCM. In operation, the

PCM receives the signals from the sensor and varies the duration during which fuel is injected. To stabilize the sensor's

output, the sensor has an internal heater. The Right Primary HO2S (Bank 1, Sensor 1) is installed in the right exhaust man-

ifold, and the Left Primary HO2S (Bank 2, Sensor 1) is installed in the left exhaust manifold.ProCarManuals.com

PGM-FI System

Primary Heated Oxygen Sensor (HO2S) (Sensor 1) (cont'd)

Troubleshooting Flowchart

Is DTC P0133 and/or P0153

indicated?
NO

YES
Intermittent failure, system is OK

at this time. Check for poor con-

nections or loose terminals at

C251, C254 (located at right shock

tower), C119 (right primary H02S

(Bank 1, Sensor 1)) or C126 (left

primary H02S (Bank 2, Sensor

1))*
and
PCM.
— The MIL has been reported on.

— DTC P0133 and/or P0153

stored.

Problem verification:

1. Do the PCM Reset Procedure.

2. Start the engine. Hold the

engine at 3,000 rpm with no

load (in Park or neutral) until

the radiator fan comes on.

3. Connect the SCS service con-

nector.

4. Test-drive under following

conditions.

— 55 mph (88 km/h) steady

speed

— Transmission in posi-

tion

— Until readiness code comes

on

Replace the primary HO2S (Sen-

sor 1).ProCarManuals.com

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0134: Right Primary Heated Oxygen Sensor

(Right Primary HO2S) (Bank 1, Sensor 1) heater system malfunction.

The HDS or the scan tool indicates Diagnostic Trouble Code (DTC) P0154: Left Primary Heated Oxygen Sensor

(Left Primary H02S) (Bank 2, Sensor 1) heater system malfunction.

The MIL has been reported on.

DTC P0134 and/or P0154 are

stored.

Problem verification:

1. Do the PCM Reset Procedure.

2. Start the engine. Hold the

engine at 3,000 rpm with no

load (in Park or neutral) until

the
radiator
fan
comes
on.

Is DTC P0134 and/or P0154

indicated?

YES

Check for an open in the HO2S:

1. Turn the ignition switch OFF.

2.
Disconnect
the
right primary

H02S (Bank 1, Sensor 1) or left

primary HO2S* (Bank2, Sen-

sor 1) connector.

3. Install a jumper wire on the

harness side of the right prima-

ry H02S (Bank 1,Sensor 1) or

left primary H02S*connector

between terminals No. 1 and

No. 2.

4. Turn the ignition switch ON (II).

5. Check the right primary HO2S

(Bank 1, Sensor 1) or left pri-

mary HO2S*(Bank2, Sensorl)

output voltage with the HDS

or the scan tool.

Is there 1.5 V or more?

YES

Check for an open in the wires

(PHO2S line):

1. Turn the ignition switch OFF.

2. Install a jumper wire on the

PCM connector between D19,

orD18*andD22.

3. Turn the ignition switch ON (II).

4. Check the right primary H02S

(Bank 1, Sensor 1) or left pri-

mary H02S* (Bank 2, Sensor 1)

output voltage with the HDS

or the scan tool.

Is there 1.5 V or more?

YES
NO
Intermittent failure, system is OK

at this time. Check for poor con-

nections or loose terminals at

C251, C254 (located at right shock

tower), C119 (right primary H02S

(Bank 1, Sensor 1)) or C126 (left

primary H02S (Bank 2, Sensor 1))*

and
PCM.

Replace the HO2S.

Repair open in the wire between

PCM (019 or D18*) and right pri-

mary HO2S (Bank 1, Sensor 1) or

left primary HO2S* (Bank 2,

Sensor 1).

Substitute a known-good PCM and

recheck. If symptom/indication

goes away, replace the original

PCM.ProCarManuals.com