1995 ACURA TL Service Repair Manual

System Descriptio n
System Connector s [Das h an d Floor ] (cont'd )
C407
DASHBOAR DWIRE HARNES S
C408C43 0
C43 2
C434
C43 5
MAIN WIREHARNES S
C433
C43
6
ProCarManuals.com

C408

C432 ECM-A

C433 ECM-B
C434 ECM-C

*1:'95-96 models

*2:'97-98 models

C435 ECM-D
*1: '95 -96 models

*2: '97 - 98 models

NOTE: • Different wires with the same color have been given a number suffix to distinguish them (for example,

YEL/BLK1 and YEL/BLK2 are not the same).

: Related to Fuel and Emissions System.

• — Connector with male terminals (double outline): View from terminal side

— Connector with female terminals (single outline): View from wire side
C436
C407
C430ProCarManuals.com

System Descriptio n
System Connector s [Das h an d Floor ] (cont'd )
DASHBOAR DWIREHARNES S
C463
REA RHARNES S
C519/C77 1
FUEL UNI TSUB-HARNES S
C773
MAIN
WIRE HARNESS
C455/C622
C449
C444
C44 6
C441C44 0
ProCarManuals.com

NOTE: • Different wires with the same color have been given a number suffix to distinguish them (for example,

YEL/BLK1 and YEL/BLK2 are not the same).

: Related to Fuel and Emissions System.

• — Connector with male terminals (double outline): View from terminal side

— Connector with female terminals (single outline): View from wire side
C519 C773
C446 C449 C455 C463
C440 C441 C444ProCarManuals.com

Troubleshooting
Troubleshootin g Procedure s
How T o Begi n Troubleshootin g
Whe n th e Malfunctio n Indicato r Lam p (MIL ) ha s bee n reporte d on , o r ther e i s a driveabilit y problem , us e th e appropri -
at e procedur e belo w to diagnos e an d repai r th e problem .
A . Whe n th e MI L ha s com e on :
1 . Connec t th e Hond a PG M Teste r o r a n OB D II sca n too l t o th e 16 P Dat a Lin k Connecto r (DLC ) locate d o n th e cente r
consol e behin d th e ashtray .
2. Tur n th e ignitio n switc h O N (II) .
3. Chec k th e DT C an d not e it . Als o chec k an d not e th e
freez e fram e data .
Refe r t o th e Diagnosti c Troubl e Cod e Char t an d
begi n troubleshooting .
MALFUNCTIONINDICATOR
LAM P
(MIL)
NOTE :
• Se e th e OB D II sca n too l o r Hond a PG M Teste r user' s manual s fo r specifi c operatin g instructions .
• Th e sca n too l o r teste r ca n rea d th e Diagnosti c Troubl e Code s (DTC) , freez e fram e data , curren t data , an d othe r
Engin e Contro l Modul e (ECM ) data .
• Freez e fram e dat a indicate s th e engin e condition s whe n th e firs t malfunction , misfir e o r fue l tri m malfunctio n wa s
detected . I t ca n b e usefu l informatio n whe n troubleshooting .
B . Whe n th e MI L ha s no t com e on , bu t ther e i s a driveabilit y problem , refe r t o th e Sympto m Char t o n pag e 11-36 .
C. DTC s will be indicate d by th e blinkin g of th e Malfunctio n Indicato r Lam p (MIL ) with the SC S servic e connecto r
connected .
Connec t th e SC S servic e connecto r t o Servic e Chec k Connecto r a s shown . (Th e 2 P Servic e Chec k Connecto r i s
locate d unde r th e das h o n th e passenger' s sid e o f th e vehicle. ) Tur n th e ignitio n switc h O N (II) .
DAT A LIN K CONNECTO R (16P )
OB D II SCA N TOO L o r
HOND A PG M TESTE R
SERVICE CHEC KCONNECTO R (2P )
SC S SERVIC E CONNECTO R
07PAZ-001010 0
ProCarManuals.com

II. Engine Control Module (ECM) Reset Procedure

Either of the following actions will reset the ECM.

• Use the OBD II scan tool or Honda PGM Tester to clear the ECM's memory.

NOTE: See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instructions.

• Turn the ignition switch OFF. Remove the BACK UP RADIO (10 A) fuse from the under-hood fuse/relay box for

10 seconds.

BACK UP RADIO

(10 A) FUSE

UNDER-HOOD

FUSE/RELAY

BOX

III. Final Procedure (this procedure must be done after any troubleshooting)

1. Remove the SCS Service Connector if it is connected.

NOTE: If the SCS service connector is connected and there are no DTCs stored in the ECM, the MIL will stay

on when the ignition switch is turned ON (II).

2. Do the ECM Reset Procedure.

3. Turn the ignition switch OFF.

4. Disconnect the OBD II scan tool or Honda PGM Tester from the Data Link Connector (16P).ProCarManuals.com

Troubleshooting
Troubleshooting Procedure s (cont'd )
If th e inspectio n fo r a particula r cod e require s voltag e o r resistanc e check s a t th e EC M connectors , remov e th e righ t
doo r sil l molding . Pul l th e carpe t bac k t o expos e th e ECM . Unbol t th e EC M cover , an d connec t th e backprob e set s an d
a digita l multimete r a s describe d below . Chec k th e syste m accordin g t o th e procedur e describe d fo r th e appropriat e code(s )
liste d o n th e followin g pages .
ECM COVE R
How to Us e th e Backprob e Set s
Connec t th e backprob e adapter s t o th e stackin g patc h cords , an d connec t th e cord s t o a multimeter . Usin g th e wir e
insulatio n a s a guid e fo r th e contoure d ti p o f th e backprob e adapter , gentl y slid e th e ti p int o th e connecto r fro m th e wir e
sid e unti l i t come s i n contac t wit h termina l en d o f th e wire .
DIGITA L MULTIMETE R
(Commerciall y available ) o r
KS-AHM-32-00 3
BACKPROBE SE T07SA2-001000 A (Tw o required) '
Backprobe Adapte r
Stackin
g Patc h
Cord
ECM
ProCarManuals.com

CAUTION:

• Puncturing the insulation on a wire can cause poor or intermittent electrical connections.

• Bring the tester probe into contact with the terminal from the connector side of wire harness connectors in the engine

compartment. For female connectors, just touch lightly with the tester probe and do not insert the probe.

RUBBER SEAL
TESTER PROBE

WIRE HARNESS

TERMINALProCarManuals.com