1991 ACURA NSX service

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Page 1044 of 1640

ACURA NSX 1991  Service Repair Manual 
Engine Oil
Inspection
1. Check engine oil with the engine off and the car parked on level ground.
2. Make certain that the oil level indicated on the dipstick is between the upper and lower marks.
3.

Page 1049 of 1640

ACURA NSX 1991  Service Repair Manual Component Locations

Index

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

Troubleshooting, page 11 -66
 INTAKE AIR TEMPERATURE (IAT) SENSOR
Troubleshooting, page 11-70
FUEL PUMP RESISTER

Troubleshooting,

Page 1055 of 1640

ACURA NSX 1991  Service Repair Manual 
System Description
Electrical Connections

FUSES
 CLOCK (7.5 A)*

ACG
 (120 A)**

ACG(S) (20 A)**

IG COIL (30 A)**

No. 2 (15 A)

No. 5 (10 A)
 No.
 4(15
 A)

No. 7
 (7.5
 A)
 In the under-hood
fuse

Page 1076 of 1640

ACURA NSX 1991  Service Repair Manual 
Troubleshooting

Troubleshooting Guide
NOTE: Across each row in the chart, the systems that could be sources of a symptom are ranked in the order they should be inspected starting with . Find the sym

Page 1078 of 1640

ACURA NSX 1991  Service Repair Manual 
Troubleshooting
Self-diagnostic Procedures
I. When the Malfunction Indicator Lamp (MIL) has been reported on, do the following: 1. Connect the Service Check Connector terminals with a jumper wire as

Page 1079 of 1640

ACURA NSX 1991  Service Repair Manual 
II. ENGINE CONTROL MODULE (ECM) Reset Procedure

1. Turn the ignition switch off.

2. Remove the CLOCK (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds to reset ECM.

NOTE: Disconnectin

Page 1080 of 1640

ACURA NSX 1991  Service Repair Manual 
Troubleshooting

Self-diagnostic Procedures (cont'd)

If codes other than those listed above are indicated, verify the code. If the code indicated is not listed above, replace

the
 ECM.
The Malf

Page 1088 of 1640

ACURA NSX 1991  Service Repair Manual 
PGM-FI System

Troubleshooting Flowchart
 Engine Control Module (ECM) (cont'd)
Malfunction Indicator Lamp (MIL) stays on after two seconds.

Turn the ignition switch ON.

Connect the service chec