System Diagrams
• F10—12-Volt Power Outlet 20 A Fuse (marked POWER
System Functional Schematic, Wiring Diagrams, and Component Locations Master Legend
• F11—Monitor Accessory 5 A Fuse (marked MONITOR
• A1—Engine Control Unit (ECU) (SE4, SE5, SE6, SE7,
• F12—Air Conditioner Panel 5 A Fuse (marked A/C
• A4—Monitor Controller (DSZ) (SE8, SE9, SE10) (W1) • A6—Radio (if equipped) (SE11) (W5) • A7—Air Conditioner Controller (ACF) (SE16, SE17,
• F13—Accessory Light Switch Harness 20 A Fuse
• A9—Exhaust Gas Recirculation (EGR) Controller (SE6)
• F15—Travel Alarm/Auxiliary Power 10 A Fuse (marked
• B1—Crankshaft Position Sensor (SE4) (W2) • B2—Camshaft Position Sensor (SE6) (W2) • B4—Engine Coolant Temperature Sensor (SE5) (W2) • B5—Fuel Temperature Sensor (SE6) (W2) • B11—Engine Oil Pressure Switch (SE9) (W2) • B12—Fuel Rail Pressure Sensor (SE5) (W2) • B16—Air Filter Restriction Switch (SE7) (W2) • B17—Water-in-Fuel (WIF) Sensor (SE7) (W2) • B18—Fuel Level Sensor (SE9) (W2) • B20—Air Conditioner High/Low Pressure Switch (SE18)
• F16—Engine Control Unit (ECU) 5 A Fuse (marked
SE8) (W2)
(marked CAB SOCKET) (SE12) (W1)
• F14—Exhaust Filter Regulator 5 A Fuse (marked LS
(W2)
(W8)
• B22—Ambient Air Temperature Sensor (SE5) (W2) • B23—Horn (SE2) (W1) • B25—Right Speaker (if equipped) (SE11) (W5) • B26—Left Speaker (if equipped) (SE11) (W5) • B32—Auto-Idle (A/I) Pressure Sensor (SE9) (W1) • B34—Travel Alarm Pressure Sensor (SE9) (W1) • B41—Air Conditioner Freeze Control Switch (SE18) (W3)
• B42—Engine Overheat Switch (SE10) (W2) • B44—Intake Manifold Temperature Sensor (SE5) (W2) • B45—Exhaust Manifold Temperature Sensor (SE6) (W2)
• B46—Exhaust Gas Recirculation (EGR) Temperature Sensor (SE4) (W2)
• B47—Exhaust Gas Recirculation (EGR) Pressure Sensor (SE4) (W2)
• B48—Exhaust Differential Pressure Sensor (SE4) (W2) • B49—Exhaust Temperature Sensor 1 (DPF) (SE5) (W2) • B50—Exhaust Temperature Sensor 2 (DOC) (SE5) (W2) • E1—Cab/Canopy Work Light (SE3) (W1), (W13) • E2—Boom Work Light (SE3) (W9) • E3—Cab Dome Light (SE11) (W5) • E5—Not Used (W5) • E6—Not Used (SE12) (W5) • E7—Not Used (SE12) (W5) • F1—Horn Relay 5 A Fuse (marked HORN) (SE2) (W1) • F2—Monitor, Radio 5 A Fuse (marked MONITOR B, RADIO) (SE11) (W1)
• F3—Work Light Relay 25 A Fuse (marked LIGHT) • F5—Not Used (W1) • F6—Starter Relay, ECU (start signal) 5 A Fuse (marked START) (SE1) (W1)
• F7—Air Conditioner Compressor/Blower Motor 25 A Fuse (marked A/C) (SE16) (W1)
• F8—Radio, Wiper, Washer Switch 10 A Fuse (marked •
WIPER, WASHER) (SE11) (W1) F9—Travel Solenoid 5 A Fuse (marked TRAVEL, ILLUMI) (SE3) (W1)
TM12885 (05JUN19)
ACC) (SE1) (W1)
PANEL, CAB) (SE11) (W1)
SE18) (W3)
(SE3) (W1)
SOCKET) (SE3) (W1)
CONTROL) (SE13) (W1)
OPTION, ALARM) (SE13) (W1)
ENGINE) (SE7) (W1)
• F17—Pilot Shutoff 5 A Fuse (marked PILOT SHUT OFF) (SE10) (W1)
• F18—Not Used (W1) • F20—Auto-Shutdown/Accessory Relay 5 A Fuse (SE2) (W6)
• F50—Fuse Box (W1) • F60—Start 50 A Fuse (SE1) (W2) • F61—Main 60 A Fuse (SE1) (W2) • F62—Glow Plug 60 A Fuse (SE1) (W2) • F63—Engine Control Unit (ECU) 30 A Fuse (SE1) (W2) • G1—Battery (SE1) (W2) • G3—Alternator (SE8) (W2) • G5—12-Volt Power Outlet (SE3) (W1) • H4—Travel Alarm (SE13) (W1) • K2—Pilot Shutoff Relay (SE10) (W1) • K4—Starter Relay (SE1) (W2) • K6—Travel Alarm Relay (SE13) (W1) • K7—Cab Tilt Relay (SE10) (W1) • K8—Work Light Relay (SE3) (W1) • K10—Horn Relay (SE2) (W1) • K11—Auto-Shutdown Relay (SE2) (W6) • K12—Blower Motor (low speed) Relay (SE17) (W3) • K13—Blower Motor (high speed) Relay (SE16) (W3) • K16—Glow Plug Relay (SE1) (W2) • K17—Blower Motor (medium low speed) Relay (SE17) (W3)
• K18—Air Conditioner Clutch Relay (SE18) (W3) • K19—Air Conditioner Torque Control Relay (SE18) (W3) • K21—Travel Speed Relay (SE3) (W1) • K25—Key Cut Relay (SE2) (W6) • K26—Accessory Cut Relay (SE2) (W6) • K28—Exhaust Gas Recirculation (EGR) Valve Relay (SE6) (W1)
• K30—Exhaust Filter Regulator Relay (SE13) (W1) • K32—Angle Blade Left Relay (SE14) (W14) • K33—Angle Blade Right Relay (SE15) (W14) • M1—Starter Motor (SE1) (W2) • M2—Fuel Transfer Pump (SE7) (W2) • M5—Windshield Wiper Motor (SE12) (W5) • M6—Windshield Washer Motor (SE12) (W4) • M7—Heater and Air Conditioner Blower Motor (SE16) (W3)
• M8—Intake Air Throttle (SE4) (W2) • M9—Heater and Air Conditioner Internal and External Servo Motor (SE17) (W3)
• M10—Heater and Air Conditioner Blower Port Change Servo Motor (SE16) (W3)
Continued on next page
9015-10-7
TZ24494,0000D3D -19-13NOV15-1/2
50G Excavator 060519 PN=163