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NAVISTAR BE-CE BUS ELECTRICAL CIRCUIT DIAGRAMS contains high quality images, diagrams, instructions to help you to operate, maintenance, diagnostic, and repair your machine. This document is printable, without restrictions, contains searchable text and bookmarks for easy navigation.
1. INSTRUCTIONS AND CHARTS (CHAPTER 1)……………………………………………………………7
1.1. CIRCUIT NUMBER IDENTIFICATION CHART, P. 1…………………………………………….7
1.2. CIRCUIT NUMBER IDENTIFICATION CHART, P. 2…………………………………………….8
1.3. CIRCUIT NUMBER IDENTIFICATION CHART, P. 3…………………………………………….9
1.4. CIRCUIT NUMBER IDENTIFICATION CHART, P. 4……………………………………………10
1.5. CIRCUIT NUMBER IDENTIFICATION CHART, P. 5……………………………………………11
1.6. CIRCUIT DIAGRAM INSTRUCTIONS, P. 6……………………………………………………12
1.7. CIRCUIT NUMBER IDENTIFICATION AND LOCATION, P. 7.. …. … …. …. … …. … …. …. … .13
1.8. SCHEMATIC SYMBOL CHART, P. 8…………………………………………………………..14
1.9. CIRCUIT NUMBER IDENTIFICATION AND LOCATION, P. 9.. …. … …. …. … …. … …. …. … .15
1.10. LAMP BULB CHART, P. 10…………………………………………………………………..16
2. 12 VOLT POWER DISTRIBUTION AND DATA LINK (CHAPTER 2)… ………… ………… …………. …17
2.1. ACCESSORY, P. 1……………………………………………………………………………..17
2.2. BATTERY, P. 2…………………………………………………………………………………18
2.3. IGNITION, P. 3…………………………………………………………………………………19
2.4. IGNITION, P. 4…………………………………………………………………………………20
2.5. GROUND, P. 5…………………………………………………………………………………21
2.6. DRIVETRAIN J1939 DATA LINK (CAB), P. 6………………………………………………….22
2.7. DRIVETRAIN J1939 DATA LINK (CHASSIS), P. 7…………………………………………….23
2.8. J1708 DATA LINK DIAGNOSTIC, P. 8…………………………………………………………24
2.9. DIAGNOSTICS AND PROGRAMMABLE CONNECTOR, P. 9…………………………………25
2.10. J1708 DATALINK DIAGNOSTIC W/ABS6, P. 10……………………………………………..26
2.11. DRIVETRAIN J1939 DATALINK W/ABS6, W/LCT, W/WTEC XMSN, P. 11…………………..27
2.12. DRIVETRAIN J1939 DATALINK W/ABS6, W/AMMETER, W/LCT, W/WTEC XMSN, P. 12. . . .28
2.13. DRIVETRAIN J1939 DATALINK W/ABS6, W/ALLISON GEN IV, W/MANUAL XMSN, P. 13. . .29
2.14. DRIVETRAIN J1939 DATALINK W/ABS6, W/AMMETER, W/ALLISON GEN IV, P. 14. . . . . . . . .30
3. 12V CHARGING AND CRANKING SYSTEM (CHAPTER 3)…………………………………………….31
3.1. KEY SWITCH START CIRCUIT, P. 1…………………………………………………………..31
3.2. CHARGING AND CRANKING, P. 2……………………………………………………………32
4. CAB ACCESSORIES (CHAPTER 4)…………………………………………………………………….33
4.1. HORN, DUAL ELECTRIC, P. 1…………………………………………………………………33
4.2. STEERING WHEEL SWITCHES, P. 2………………………………………………………….34
4.3. SWITCH PACKS, P. 3………………………………………………………………………….35
4.4. WINDSHIELD WIPER AND WASHER SYSTEMS, P. 4………………………………………..36
4.5. DRIVER’S AIR CONDITIONING, P. 5………………………………………………………….37
5. ENGINE ELECTRONICS (CHAPTER 5)…………………………………………………………………38
5.1. ELECTRONIC ENGINE CONTROLS — V8 ENGINE, P. 1…………………………………….38
5.2. ELECTRONIC ENGINE CONTROLS — I6 ENGINE, P. 2…………….. ………………………39
5.3. I6 FAN AND SHUTTER WIRING, P. 3………………………………………………………….40
5.4. V8 FAN AND SHUTTER WIRING, P. 4…………………………………………………………41
5.5. V8 FAN AND SHUTTER WIRING, P. 5…………………………………………………………42
6. GAUGES AND WARNING LIGHTS (CHAPTER 6)………………………………………………………43
6.1. IP GAUGES, P. 1………………………………………………………………………………43
6.2. WARNING LIGHTS, P. 2……………………………………………………………………….44
6.3. WARNING LIGHTS CONTROLLED BY ENGINE, TRANSMISSION, ABS CONTROLLERS, P.
3………………………………………………………………………………………………..45
6.4. ENG. OIL PRESS. AND TEMP., SPEEDOMETER, TACH., VOLTMETER AND WATER TEMP.
GAUGE CIRCUITS, P. 4………………………………………………………………………..46
6.5. GAUGES AND WARNING LIGHTS — INSTRUMENT CLUSTER, P. 5………………………..47
6.6. GAUGES AND WARNING LIGHTS — AMMETER, P. 6……………………………………….48
6.7. GAUGES AND WARNING LIGHTS — COOLANT TANK LEVEL, P. 7………………………..49
6.8. GAUGES AND WARNING LIGHTS — FUEL GAUGE WITH AIR BRAKE CHASSIS, P. 8. . . . . .50
6.9. GAUGES AND WARNING LIGHTS — FUEL GAUGE WITH HYDRAULIC BRAKE CHASSIS, P.
9………………………………………………………………………………………………..51
6.10. GAUGES AND WARNING LIGHTS — PARK BRAKE LIGHT, P. 10. … … … … … … … … … ..52
6.11. GAUGES AND WARNING LIGHTS — AIR PRESSURE INPUT CIRCUIT AND ZERO VOLT
REFERENCE SPLICE, P. 11……………………………………………………………………53
6.12. GAUGES AND WARNING LIGHTS — CHANGE TRANSMISSION FILTER LIGHT, P. 12. . . . .54
7. CHASSIS ACCESSORIES (CHAPTER 7)……………………………………………………………….55
7.1. AIR DRYER AND DRAIN VALVE, P. 1…………………………………………………………55
7.2. FUEL FILTER WIRING SYSTEM, P. 2…………………………………………………………56
7.3. AIR PARK BRAKE INTERLOCK, P. 3…………………………………………………………57
7.4. PARK BRAKE / SHIFTER INTERLOCK — WITH LCT TRANSMISSION ONLY, P. 4………….58
7.5. ANTILOCK BRAKE SYSTEM (ABS), AIR, P. 5………………………………………………..59
7.6. ANTILOCK BRAKE SYSTEM (ABS), AIR, P. 6………………………………………………..60
7.7. AIR SOLENOID MODULE, P. 7………………………………………………………………..61
7.8. HYDRAULIC ANTILOCK BRAKES, P. 8………………………………………………………62
7.9. HYDRAULIC ANTILOCK BRAKES, P. 9………………………………………………………63
7.10. HYDRAULIC ANTILOCK BRAKES, P. 10……………………………………………………64
7.11. ALLISON WTEC MD TRANSMISSION, P. 11………………………………………………..65
7.12. ALLISON WTEC MD TRANSMISSION, P. 12………………………………………………..66
7.13. ALLISON WTEC MD TRANSMISSION, P. 13………………………………………………..67
7.14. ALLISON LCT TRANSMISSION, P. 14……………………………………………………….68
7.15. CROSSING GATE, P. 15……………………………………………………………………..69
7.16. BRAKE MONITOR, P. 16……………………………………………………………………..70
7.17. MANUAL TRANSMISSION, P. 17…………………………………………………………….71
7.18. TWO SPEED AXLE, P. 18……………………………………………………………………72
7.19. CHASSIS ACCESSORIES W/ABS6 — BENDIX AIR — ECU PIN OUT, P. 19.. .. .. .. … .. .. … .73
7.20. CHASSIS ACCESSORIES W/ABS6 — BENDIX AIR — ECU PIN OUT, P. 20.. .. .. .. … .. .. … .74
7.21. CHASSIS ACCESSORIES W/ABS6 — BENDIX AIR ECM POWER, P. 21…………………..75
8. LIGHT SYSTEMS (CHAPTER 8)…………………………………………………………………………76
8.1. BACK-UP LIGHTS / EXTERIOR LIGHT CHECK, P. 1…………………………………………76
8.2. FOG LIGHTS, P. 2……………………………………………………………………………..77
8.3. HIGH BEAM, FLASH TO PASS, TURN SIGNAL, AND AIR BRAKE STOP SWITCHES, P. 3. . .78
8.4. HEADLIGHTS, MARKER, PARK, TURN, AND STOP RELAY — WITHOUT FENDER MOUNT
LIGHTS, P. 4……………………………………………………………………………………79
8.5. HEADLIGHTS, MARKER, PARK, TURN, AND STOP RELAY — WITH FENDER MOUNT
LIGHTS, P. 5……………………………………………………………………………………80
8.6. EXPORT STOP, TURN, TAIL AND BACK-UP LIGHTS, P. 6…………………………………..81
9. BODY BUILDER CONNECTION DATA (CHAPTER 9)…………………………………………………..82
9.1. BODY BUILDER ELECTRICAL CONNECTION DATA FOR ALL MODELS, P. 1.. … .. … … .. ..82
9.2. BODY BUILDER ELECTRICAL CONNECTION DATA FOR CE MODEL, P. 2. . .. .. . .. .. .. . .. .. . .83 AND MORE
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