SECTION 06: ELECTRICAL
PA1562
1
CONTENTS
1. GENERAL DESCRIPTION....................................................................................................................4
1.1 WIRING DIAGRAMS............................................................................................................................4
1.1.1 Using Wiring Diagrams............................................................................................................4
1.1.2 Testing Circuits........................................................................................................................5
1.2 WIRE SIZES AND COLORS..................................................................................................................5
1.3 SPARE WIRES...................................................................................................................................5
1.4 CLEANING CONNECTORS...................................................................................................................6
1.5 CIRCUIT BREAKERS...........................................................................................................................6
1.6 MULTIPLEX FUSES ............................................................................................................................7
1.7 RELAYS............................................................................................................................................7
1.8 PRECAUTIONS...................................................................................................................................7
2. X3 COACHES ELECTRICAL COMPARTMENTS................................................................................9
2.1 MAINTENANCE ..................................................................................................................................9
2.2 REAR ELECTRICAL COMPARTMENT ....................................................................................................9
2.3 FRONT ELECTRICAL AND SERVICE COMPARTMENT ...........................................................................10
2.4 ENGINE REAR START PANEL .............................................................................................................11
2.5 CONDENSER COMPARTMENT ............................................................................................................12
2.5.1 Battery equalizer ...................................................................................................................12
2.6 ENTRANCE DOOR & WIPER CONTROL PANEL......................................................................................12
3. BATTERIES.........................................................................................................................................12
3.1 BATTERY DISCHARGE PROTECTION .................................................................................................14
3.2 MAIN BATTERY RELAYS...................................................................................................................14
3.3 BATTERY REMOVAL AND INSTALLATION ............................................................................................14
3.4 BATTERY RATING............................................................................................................................15
3.5 BATTERY TESTING ..........................................................................................................................15
3.5.1 Visual Inspection ...................................................................................................................16
3.5.2 Removing Surface Charge....................................................................................................16
3.5.3 Load Test...............................................................................................................................16
3.5.4 Testing Battery Cables..........................................................................................................17
3.6 BATTERY CHARGING .......................................................................................................................17
3.6.1 Battery Charging Guide.........................................................................................................19
3.6.2 Emergency Jump Starting With Auxiliary (Booster) Battery. ................................................19
3.7 CLEANING AND INSPECTION .............................................................................................................20
3.8 COMMON CAUSES OF BATTERY FAILURE..........................................................................................20
3.9 TROUBLESHOOTING ........................................................................................................................21
3.10 "BAT" BATTERY VOLTAGE INCORRECT TELLTALE LIGHT ....................................................................21
3.10.1 "Bat" Telltale Light Definitions ...............................................................................................21
4. TROUBLESHOOTING AND TESTING THE MULTIPLEX VEHICLES..............................................21
4.1 ELECTRICAL SYSTEM DIAGNOSTIC ...................................................................................................21
4.2 PROBING VOLTAGE ON THE MULTIPLEX CIRCUITS............................................................................22
4.3 CAN NETWORK ...............................................................................................................................22
4.3.1 Can Connection On The Telltale Panel And The Hvac Control Unit ....................................22
4.3.2 Spare Can .............................................................................................................................23
4.4 TEST MODE FOR SWITCHES AND SENSORS .....................................................................................23
4.4.1 Information Available And Impact On The Functions In Switch/Sensor Test Mode .............23
4.5 TEST MODE FOR ELECTRIC MOTORS ...............................................................................................24
4.5.1 Test Sequence ......................................................................................................................24
4.6 CAN NETWORK LAYOUT AND TROUBLESHOOTING.............................................................................25
4.7 TROUBLESHOOTING ........................................................................................................................26
4.8 ESSENTIAL FUNCTIONS TO OPERATE THE VEHICLE ..........................................................................31
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