1995 ACURA TL fuse box

Evaporative Emission (EVAP) Controls

Description

The evaporative emission controls are designed to minimize the amount of fuel vapor escaping to the atmosphere. The

system consists of the following components:

A. Evaporative Emission (EVAP) Control Canister

An EVAP control canister is used for the temporary storage of fuel vapor until the fuel vapor can be purged from the

EVAP control canister into the engine and burned.

B. Vapor Purge Control System

EVAP control canister purging is accomplished by drawing fresh air through the EVAP control canister and into a port

on the throttle body. The purging vacuum is controlled by the EVAP purge control solenoid valve.

'96 model:
'97 - 98 models:

C. Fuel Tank Vapor Control System

When fuel vapor pressure in the fuel tank is higher than the set value of the EVAP two way valve, the valve opens and

regulates the flow of fuel vapor to the EVAP control canister.

'96 model:

INTAKE MANIFOLD
THROTTLE

BODY

EVAP PURGE

CONTROL

SOLENOID VALVE

FUEL TANK

EVAP VALVE
EVAP TWO WAY VALVE
From

No. 4 ECU
(PCM) (15A)

FUSE (in the under-dash

fuse/relay box)

EVAP

CONTROL

CANISTER FRESH

AIR
EVAP PURGE

FLOW SWITCH

FUEL FILL CAP
PCM
VARIOUS

SENSORS

FUEL TANK
ENGINE COOLANT TEMPERATURE ABOVE 158°F (70°C)
ENGINE COOLANT TEMPERATURE ABOVE 99°F (37°C)
EVAP PURGE CONTROL SOLENOID VALVE DUTY CON-

TROLLED AFTER STARTING ENGINE
EVAP PURGE CONTROL SOLENOID VALVE OFF AFTER

STARTING ENGINEProCarManuals.com

Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
'97 - 9 8 models :
INTAKE
MANIFOL DTHROTTL EBODY
FromNo. 4 EC U (PCM )(20 A ) FUS E
(i n th e under-das h
fuse/rela y box )
EVAP CONTROL CANISTERVENT SHUT VALVE
EVAP TWO WAY VALVE
EVAPCONTROLCANISTER
VARIOU SSENSOR S
EVAP BYPAS SSOLENOI D VALV E
FUEL TAN K
FUE L TAN K
PRESSUR E
SENSO RFUE
L TAN K
EVA P VALV E FUE
L FIL L CA P
PCM
EVA P PURG ECONTRO LSOLENOI D VALV E
EVAP THRE EWAY VALV E
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PCM Reset Procedure

1. Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.

2. Turn the ignition switch OFF.

3. Remove the BACK UP, RADIO fuse (10 A) from the under-hood fuse/relay box for 10 seconds to reset the PCM.

NOTE: The PCM memory can also be cleared by using the OBD II Scan Tool or Honda PGM Tester.

BACK UP, RADIO

(10 A) FUSE

UNDER-HOOD

FUSE/RELAY

BOX

Final Procedure

NOTE: This procedure must be done after any troubleshooting.

1. Turn the ignition switch OFF.

2. Disconnect the OBD II Scan Tool or Honda PGM Tester from the Data Link Connector (16P), or remove the special tool

from the Service Check Connector.

3. Reset the PCM.

4. Turn the ignition switch ON (II).

5. Enter the anti-theft code for the radio, then enter the customer's radio station presets.ProCarManuals.com

DTC Indication Pattern (When the ABS control unit detected a problem three times.):

Turn the ignition

switch ON (II)

ABS

Indicator

light on

ABS

Indicator

light off
DTC:
4-2

Main Coda: 4

Sub-Code: 2

Connect the

SCS service

connector
2 Second Second

pause pause
5 Second

pause
1

Second

pause
5 Second

pause
1

Second

pause

2 Seconds

• Turn the ignition switch ON (II). The ABS indicator light comes on for two seconds to check the bulb.

• The ABS control unit indicates the DTC three times.

• If you miscount the blinking frequency or if you recheck the blinking frequency, turn the ignition switch OFF then

turn it ON (II) to cycle the ABS indicator light again.

4. Remove the SCS service connector.

NOTE: The Malfunction Indicator Lamp (MIL) will stay on after the engine is started if the SCS service connector is

connected.

5. Remove the ABS B2 (15 A) fuse in the under-hood fuse/relay box for at least three seconds to erase the ABS control

unit's memory.ProCarManuals.com

Troubleshooting

Radiator Fan Control Module Input Tests

NOTE: Perform the following tests with the radiator fan control module 8P connector connected, the ignition switch ON (II),

and the A/C switch OFF. If you find the cause of a problem, correct it before you continue.

RADIATOR FAN CONTROL MODULE 8P CONNECTOR

WIRE SIDE OF FEMALE TERMINALS

Terminal

No.

4

6

7

2

3

1

8

5
Wire

color

BLK

WHT/GRN

BLK/YEL

BLK/YEL

YEL/WHT

YEL

LT

GRN/YEL

ORN
Test condition

Check for voltage to body

ground.

Check for battery voltage:

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Check for battery voltage:

Ignition switch - ON (II)

Connect to body ground:

Ignition switch - ON (II)

Check for voltage.
Desired results

There should be less

than one volt.

There should be battery

voltage.

Condenser fan and radia-

tor fan should come on.

Approx. 11 V (engine oil

temperature below 198°F

[92°C])
Corrective action if desired results are

not obtained

Repair open to body ground.

Check No. 56 (10 A) fuse in the under-

hood fuse/relay box; if OK, repair open

in the WHT/GRN wire.

Check No. 4* fuse in the under-dash

fuse/relay box; if OK, repair open in the

BLK/YEL wire.

Check No. 7 (7.5 A) fuse in the under-

dash fuse/relay box; if OK, repair open in

the BLK/YEL wire.

Replace the radiator fan control module.

Before you connect the new radiator fan

control module, disconnect both fan

relays. Check for continuity between the

YEL/WHT (or YEL) wire and ground, using

the 20 scale on your ohmmeter. There

should be no continuity. If there is conti-

nuity, the new radiator fan control mod-

ule will be damaged when you connect it.

Check for an open in the LT GRN/YEL

wire between the radiator fan control

module and the condenser fan relay or

the radiator fan relay. If OK, check for an

open in the YEL/WHT wire between the

radiator fan control module and the radi-

ator fan relay, or the YEL wire between

the radiator fan control module and the

condenser fan relay. If OK, test the con-

denser fan relay or the radiator fan relay.

Faulty engine oil temperature switch,

short to body ground, or faulty radiator

fan control module.

*No. 4 (15 A):'96 model

No. 4 (20 A): '97 and '98 modelsProCarManuals.com

Back-up Light s
Test
NOTE : Befor e testing , chec k th e No . 1 (1 0 A ) fus e i n th e
under-das h fuse/rela y box .
1. Chec k whethe r th e back-u p light s g o o n b y turnin g
the ignitio n switc h O N (II ) an d shiftin g th e shif t leve r
• I f th e back-u p light s d o no t g o on , chec k for :
blow n bulb .
faulty A/ T revers e relay ,
poo r groun d (G301 , G502) .
an ope n in th e wire .
• I f th e back-u p light s g o on , g o t o ste p 2 .
2. Wit h th e shif t leve r i n tur n th e ignitio n
switch OFF .
3. Disconnec t th e 10 P connecto r fro m th e A/ T gea r
positio n switch .
4. Chec k fo r continuit y betwee n th e No . 2 an d No . 8
terminal s wit h th e shif t leve r i n
• I f ther e is continuity , g o to ste p 5.
• I f ther e i s n o continuity , replac e th e A/ T gea r
positio n switc h (se e sectio n 14 ).
5 . Mov e th e shif t leve r bac k an d fort h a t th e
an d chec k fo r continuit y betwee n th e No . 2 an d No . 8
terminal s withi n th e rang e o f fre e pla y o f th e shif t
lever .
• I f ther e i s n o continuity , adjus t th e A/ T gea r posi -
tion switc h (se e sectio n 14 ).
ProCarManuals.com

Troubleshooting

NOTE:

• The numbers in the table show the troubleshooting sequence.

• Before troubleshooting,

Check the No. 1 (10 A) and the No. 4 (15 A)*1 or (20 A)*2 fuses in the under-dash fuse/relay box, and the No. 31 (120 A),

No. 35 (50 A), and the No. 30 (20 A) fuses in the under-hood fuse/relay box.

Check that the horns sound.

Check the tachometer to see if it works properly.ProCarManuals.com

Security Alar m Syste m
Componen t Locatio n Inde x
HORN (LOW ) HOR
N RELA Y NOTE
: Refe r t o page 23-274 of the '95-9 8
Acura 2.5TL Servic e Manual , P/ N 61SW504 ,for the items no t show n in thi s sub-section .
BATTERYTest, pag e 23-5 6
HEADLIGH T RELA Y
TAILLIGH T RELA Y
Test , pag e 23-5 8
UNDER-HOO
D
FUSE/RELAYBOX
DIMME R RELA Y
UNDER-DAS H RELA Y BO X
HOR N (HIGH )
Test , pag e 23-203
Test, pag e 23- 63 Test
, pag e 23-63
Test
, pag e 23-203 Test
, pag e 23- 62
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