Fuel and Emission
Special Tools ...........................................
1 1 - 2
Component Locations
Index ..................................................
System Description
Vacuum Connections ............................
1 1 - 5
Electrical Connections ...........................
1 1 - 8
Troubleshooting
Troubleshooting Guide ..........................
11-16
Self-diagnostic Procedures .....................
1 l-l 8
How to Read Flowcharts ........................
11-23
PGM-FI Control System
Troubleshooting Flowcharts
System Description ...............................
1 l-24
Electronic Control Unit ...........................
I I - 2 6
Oxygen Sensors ........ ...........................
I I - 3 0
Oxygen Sensor Heater
, ..............
1 l-32
Fuel Supply System ...............................
11-36
Fuel Metering System ............................
11-38
Manifold Absolute Pressure
Sensor ............ ..............................
1 I-40
Sensor ..............................
1 1 - 4 6
Coolant Temperature Sensor ..................
11-48
Throttle Angle Sensor ............................
1 I-50
intake Air Temperature Sensor ................
Atmospheric Pressure Sensor .................
1
Ignition Output Signal ............................
11-56
Vehicle Speed Sensor...........................
11-58
Ignition Timing Adjuster .........................
1 I-60
Knock Sensor .......................................
1 1 - 6 2
A/T FI Signal ...................
. ....................
1 l-64
Idle Control System
System Troubleshooting Guide ...................
1 l-66
System Description ...................................
1 1 - 6 7
Troubleshooting Flowcharts
Electronic Air Control Valve ....................
1 l-70
Air Conditioning Signal ..........................
1 1 - 7 2
Alternator FR Signal ..............................
11-74
A/T Shift Position Signal ........................
1 1 - 7 6
M/T Neutral Switch Signal ......................
11-78
Clutch Switch Signal .............................
1 I-80
Starter Switch Signal .............................
11-82
Fast Idle Valve ..........................................
11-83
Speed Setting .....................................
11-84
Fuel Supply System
System Troubleshooting Guide ...................
11-86
System Description ...................................
II-87
Fuel Pressure ...........................................
11-87
Fuel Injectors ...........................................
11-89
Injector Resistor .......................................
I I - 9 4
Pressure Regulator ....................................
11-95
Fuel Filter ................................................ 1 1 - 9 7
Fuel Pump ............................................... 11-98
............................................... II-103
Fuel Pump Resistor ...................................
1 I-106
................................................ II-108
Air Intake System
System Troubleshooting Guide ...................
1 l-l 10
System Description ...................................
1 l-l 11
Air Cleaner .............................................. 11-112
Throttle Cable ...................
Throttle Body .................
..)
...............
11-114
System ...................
Chamber Volume Control System ................
1 l-l 19
Emission Control System
System Troubleshooting Guide ...................
I I - I ‘
System Description ...................................
Tailpipe Emission ......................................
Catalytic Converter ...................................
Exhaust Gas Recirculation System
...............
Positive Crankcase Ventilation
System
....
.....................................
11-134
Evaporative Emission Controls ....................
11-135
...
Summary of Contents for Acura NSX 1991
Page 1: ... j s _ _ ...
Page 3: ......
Page 22: ...Special Tools Individual tool lists are located at the front of each section ...
Page 23: ...Specifications Standards and Service Limits 3 2 Design Specifications 3 l 1 ...
Page 39: ...Body Specifications m I 1 175 46 3 Unit mm in ...
Page 40: ...Maintenance Lubrication Points 4 2 Maintenance Schedule 4 4 ...
Page 42: ... 13 I 0 4 3 ...
Page 60: ...Engine Removal Installation ...
Page 81: ...lr I 6 7 ...
Page 191: ... n EilEli3 A A A Cl51 c4 BLU 1 TACHO METER CONNECTOR Cl61 C478 C488 REDlYEL YELlRED J A GlOl ...
Page 193: ... PGM FI 1 IDLE CONTROL 1 FUEL SUPPLY 1 EMISSION CONTROL II 17 ...
Page 207: ...II 31 ...
Page 211: ...I I 35 ...
Page 219: ... cont d II 43 ...
Page 235: ...1 l 59 ...
Page 255: ...11 79 ...
Page 285: ...1 l 109 ...
Page 434: ...t 14 46 ...
Page 477: ...14 95 ...
Page 482: ...Illustrated Index L Side Cover 14 100 ...
Page 484: ...Illustrated Index Transmission Housing 14 102 ...
Page 486: ...Illustrated Index Torque Converter Housing Valve Body ...
Page 527: ...3 Assemble the transmission in the following numbered sequence Replace cont dl ...
Page 551: ......
Page 698: ...9 Nom 0 9 kg m 7 lb ft REAR 9 Nom 0 9 kg m 7 lb ft ...
Page 724: ...19 37 ...
Page 766: ...19 79 ...
Page 888: ...Frame Repair Chart 20 62 ...
Page 893: ...22 5 ...
Page 937: ...22 49 ...
Page 950: ...Blower 22 62 ...
Page 971: ...22 83 ...
Page 1003: ... JND WIRE EN NE GROUND WIRE B ...
Page 1005: ... lzl A ENGINE W I R E H A R N E S S cont d 23 l 9 ...
Page 1007: ... rl p173 5 Cl34 Cl32 Ti03 23 21 ...
Page 1009: ...C2bl c262 I C203 cont d 23 23 ...
Page 1011: ... rl SUB RELAY BOX A cont d 23 25 ...
Page 1013: ...FRONT COMPAR 23 27 J ...
Page 1015: ...e RIGHT RETRACTOR SUB HARNESS I LEFT RETRACTOR SUB HARNESS I ...
Page 1019: ...C466 C465 C468 C464 c473 FLOOR WlFiE HARNESS co d 23 33 ...
Page 1021: ... ITI RETRACTABLE HEADLIGHT CONTROL UNIT i FLOOR WIRE HARNESS 23 35 ...
Page 1023: ...MAIN FUSE BOX I 23 37 ...
Page 1027: ...DRIVER S DOOR WIRE HARNESS PASSENGER S DOOR WIRE 23 41 ...
Page 1029: ...SRS CONTROL UN FUEL TANK WIRES 23 43 ...
Page 1097: ......
Page 1275: ...1 ACTUATOR ASSEMBLY SPEED SENSOR 23 l 33 ...
Page 1336: ......
Page 1338: ......
Page 1340: ......
Page 1342: ......
Page 1344: ......
Page 1346: ......
Page 1348: ......
Page 1350: ...j ...
Page 1352: ......
Page 1354: ......
Page 1356: ......
Page 1358: ......
Page 1360: ......
Page 1362: ......
Page 1364: ......
Page 1366: ......
Page 1368: ......
Page 1370: ......
Page 1372: ......
Page 1374: ......
Page 1376: ......
Page 1378: ......
Page 1380: ... e ...
Page 1382: ......
Page 1384: ......
Page 1386: ......
Page 1388: ......
Page 1390: ......
Page 1392: ... ...
Page 1394: ......
Page 1396: ......
Page 1398: ......
Page 1400: ......
Page 1402: ......
Page 1404: ......
Page 1406: ......
Page 1408: ......
Page 1410: ... ...
Page 1412: ......
Page 1413: ... I 8 t 0 0 L Inm ...
Page 1414: ...4B ...
Page 1415: ... I f ...
Page 1416: ......
Page 1417: ...cted System Connectors ...
Page 1418: ......
Page 1420: ......