ACURA NSX 1997 Service Repair Manual

System Description

System Connectors [Behind the bulkhead panels] (cont'd)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 sideProCarManuals.com

System Description

System Connectors [Behind the bulkhead panels] (cont'd)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 sideProCarManuals.com

System Description

System Connectors [Front Compartment and Under-dash] (cont'd)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 sideProCarManuals.com

System Description

System Connectors [Front Compartment and Under-dash] (cont'd)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 sideProCarManuals.com

Troubleshooting
Troubleshooting Procedure s
I. Ho w 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 is 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 .
MALFUNCTIO N
INDICATO R
LAM P
(MIL)
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 unde r th e glov e bo x behin d a removabl e
cover.
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 .
NOTE:
• Se e th e OB D I I 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 can be 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 is a driveabilit y problem , refe r t o th e Sympto m Char t o n pag e 11-40 .
C . DTC s wil l b e indicate d b y th e blinkin g o f th e Malfunctio n Indicato r Lam p (MIL ) wit h th e SC S servic e connecto r con -
nected .
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 ) SERVIC
E CHEC K
CONNECTO R (2P )
OB D II SCA N TOO L o r
HOND A PG M TESTE R 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.

• Using 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 CLOCK (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds.

NOTE: If the CLOCK (7.5 A) fuse is removed when the ignition switch is in the ON (II) position, the MIL will come

on and the ECM will store a DTC.

UNDER-HOOD

FUSE/RELAY BOX
CLOCK

(7.5 A) FUSE

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

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

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).

IV. Known-Good ECM Substitution

The ECM is part of the immobilizer system. If you substitute a known-good ECM, the ECM will have a different immo-

bilizer code. In order for the engine to start, you must rewrite the immobilizer code with the Honda PGM Tester.ProCarManuals.com