ACURA NSX 1997 Service Repair Manual
Page 131 of 1503
Troubleshooting
Troubleshootin g Procedure s (cont'd )
Sympto m Char t
Listed belo w ar e symptom s an d probabl e cause s fo r problem s tha t d o no t caus e th e Malfunctio n Indicato r Lam p (MIL ) t o
com e on .
I f th e MI L wa s reporte d on , g o t o pag e 11-38 .
Troubleshoo t eac h probabl e caus e in th e orde r liste d (fro m lef t t o right ) unti l th e sympto m is eliminated .
The probabl e caus e an d troubleshootin g pag e referenc e ca n b e foun d o n th e nex t page .
Othe r Probabl e Causes :
Engine wil l no t star t
— Compressio n
— Engin e locke d u p
— Timin g bel t
— Startin g syste m
— Overheatin g
— Batter y
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Page 132 of 1503
Probable Caus e Lis t (Fo r th e DT C chart , se e pag e 11-52 .)
Sectio n 2 3
11-5 8
See DTC chart
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Page 133 of 1503
Troubleshooting
Engine Control Module Terminal Arrangement
ECM CONNECTOR A (26P)
ECM CONNECTOR A (26P)
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.ProCarManuals.com
Page 134 of 1503
ECM CONNECTOR B (16P)
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
*: M/T
ECM CONNECTOR B (16P)ProCarManuals.com
Page 135 of 1503
Troubleshooting
- Engin e Contro l Modul e Termina l Arrangemen t (cont'd )
ECM CONNECTO R C (12P )
Wir e sid e o f femal e terminal s
ECM CONNECTO R C (12P ) NOTE
: Standar d batter y voltag e i s 1 2 V .*:
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Page 136 of 1503
ECM CONNECTO R D (22P )
ECM CONNECTO R D (22P) Wir
e sid e o f femal e terminal s
NOTE : Standar d batter y voltag e is 1 2 V .
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Page 137 of 1503
Troubleshooting
Engine Control Module Terminal Arrangement (cont'd)
ECM CONNECTOR F (26P)
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
*: M/TProCarManuals.com
Page 138 of 1503
ECM CONNECTOR G (12P)
ECM CONNECTOR G (12P)
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.ProCarManuals.com
Page 139 of 1503
Fuel Suppl y
Fuel Lin e
Chec k al l hos e clamp s an d retighte n i f necessary .
D o no t disconnect .
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Page 140 of 1503
Emission Control System
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.
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.
D. Onboard Refueling Vapor Recovery (ORVR) System
During refueling, the ORVR (Onboard Refueling Vapor Recovery) vent shut valve opens with the pressure in the fuel
tank, and feeds the fuel vapor to the EVAP control canister.ProCarManuals.com