Operation and maintenance manual

Section 190-0000
1
SM 2126 Rev 2 06-04
ELECTRICAL SYSTEM - Circuit Diagrams (DDEC IV, 6WG 310)
COMPONENT DESIGNATIONS
A4 - Radio/cassette
A5 - Radio/cassette speaker
B2 - Coolant temperature sender
B7 - Coolant Level sender
B13 - Rot'nl speed sensor
B15 - Air temperature sender
B19 - Throttle position sender
B20 - Engine oil temp sender
B21 - Trans oil temp sender
B22 - Engine oil press sender
B24 - Turbo boost sender
B25 - Fuel pressure sender
B26 - Fuel temperature sender
B27 - Synchro reference sender
B28 - Timing reference sender
B32 - Trans oil retard temp sender
B33 - Air cond temp sender
E3 - Interior light
E5 - Reverse light
E7 - Inst panel lights
E11 - Side marker light, L
E12 - Taillight, L
E13 - Side marker light, R
E14 - Taillight, R
E15 - High/low beam headlamp, L
E16 - High/low beam headlamp, R
E19 - Rear fog lamp (Option)
E21 - Rotating Beacon (Option)
E23 - Work light (Option)
E26 - High beam headlamp, L
E27 - High beam headlamp, R
E35 - Heated mirror
G1 - Generator
G2 - Battery
H2 - Warning light
H5 - Dir indicator w/l
H6 - Dir indicator, F, L
H7 - Dir indicator, B, L
H8 - Dir indicator, F, R
H9 - Dir indicator, B, R
H10 - Brake light, L
H11 - Brake light, R
H12 - High beam w/l
H23 - Engine check w/l
H24 - Engine stop w/l
H27 - Trans stop w/l
S11 - Rear wash/wipe switch
S13 - Horn button
S14 - Hazard w/l switch
S15 - Direction ind switch
S16 - Stoplight switch
S18 - Lights switch
S19 - Dipswitch
S20 - Headlamp flash switch
S22 - Body-up switch
S29 - Retarder request switch
S31 - Park brake w/l switch
S37 - Axle difflock switch
S40 - Gear shift selector
S41 - Auxillary lights switch
S43 - Air cond pressure sw
S48 - Accumulator press sw, F
S49 - Accumulator press sw, B
S55 - Brake diff press switch
S57 - Steering press switch
S60 - Difflock request switch
S67 - Lock-up press switch
S68 - Diagnostic request & engine
override switch
S71 - Air cond rheostat switch
S74 - Kickdown switch
S77 - Trans difflock switch
S79 - Heated mirror switch
S80 - Engine compression brake
deacceleration mode switch
S81 - Retarder/engine compression
brake selection switch
S82 - Eng comp brake on/off switch
S90 - Trans. filter restriction switch
X1 - Handlamp socket
Y3 - Retarder valve
Y4 - Brake diverter valve
Y7 - Difflock valve transmission
Y7 - Difflock valve middle axle
Y20 - Fuel injector
Y26 - Body raise solenoid
Y27 - Body lower solenoid
Y29 - Engine comp brake solenoid
Wire colours
B - Black
N - Brown
U - Blue
R - Red
G - Green
L - Light green
K1 - Starter relay
K4 - Dir ind flasher unit
K5 - Air cond compressor clutch
K14 - Start interlock relay
K15 - Headlamp relay
K17 - Reverse relay
K21 - Trans shift clutch
K22 - Lock-up clutch
K23 - Ignition relay
K32 - Eng comp brake relay on
K33 - Radiator fan relay
K34 - Horn relay
K35 - Body up relay
K36 - Body float relay
K37 - Body hyd system relay 12V
K40 - Radiator solenoid valve
K43 - Radio/cassette relay
K45 - Brake pump compensator
K57 - Sound power relay No. 1
K58 - Sound power relay No. 2
L3 - Reverse alarm
L4 - Buzzer
L5 - Electric horn
M1 - Starter motor
M3 - Heater blower motor
M4 - Washer motor, F
M5 - Wiper motor, F
M6 - Wiper motor, B
M7 - Washer motor, B
M10 - Cab fan motor
M13 - Air seat compressor
N3 - Voltage convertor 12V
N4 - Frequency divider
P1 - Speedometer/odometer
P2 - Tachometer/hourmeter
P8 - Trans. Oil Temp. gauge
R7 - Cigar Lighter
S1 - Battery master switch
S2 - Starter keyswitch
S4 - W/L test switch
S7 - Emergency/park brake sw
S8 - Blower switch
S9 - Washer switch, F
S10 - Wiper switch, F
TERMINAL DESIGNATIONS IN ACCORDANCE
WITH DIN 72 552
L - LEFT R - RIGHT F - FRONT B - BACK
FUSE
RESISTOR
PLUG
DIODE
O - Orange
Y - Yellow
P - Purple
W - White
S - Slate
K - Pink
TRAILER
CONNECTION