Komatsu — REAR OF OPERATOR CAB

Operator Cab and Controls - Section 32 08/11 OM3212 Page 32-26 TABLE I. CIRCUIT BREAKER CHART CIRCUIT BREAKER IDENTIFICATION CIRCUIT NUMBER CONTROL DESCRIPTION No. AMPS VOLTS IN OUT LOCATION: BATTERY BOX CB24V 50 +24 3 12 24 Volt Control Power (To Power Bus #3 on Cab Rear Wall) CB12V 50 +12 4 12V 12 Volt Control Power (To Power Bus #4 on Cab Rear Wall) LOCATION:

CAB REAR WALL CB01 10 +24 1 27B Quantum Engine Monitor CB02 5 +24 1 25 Transmission Controller (ATC) CB03 10 +24 1 82 Retard and Control Monitor (RCM) CB04 5 +24 1 91B1 Powertrain Management Controller (PMC) CB05 5 +24 1 91B2 Powertrain Management Controller (PMC) CB06 5 +24 11 46 Hazard Light Control CB07 15 +24 12 44A Brake Lights CB08 5 +24 12 25T Transmission Cut Solenoid Signal CB09 15 +24 12 63 Windshield Wiper Motor CB10 10 +24 12 47B Back-Up Lights CB11 5 +24 12 91A Powertrain Management Controller (PMC) CB12 5 +24 12 81 Suspension Controller (Optional) CB13 10 +24 12 25C2 Transmission Controller (ATC) CB14 10 +24 12 25C1 Transmission Controller (ATC) CB15 5 +24 12 27A Quantum Engine Monitor CB16 5 +24 12 12H Hoist Limit Solenoid Valves CB17 10 +24 12 39J Payload Meter Light Control CB18 5 +24 12 39G Payload Meter CB19 15 +24 12 47A Back-Up Lights and Alarm CB20 10 +24 12 68A Automatic Lube System Timer CB21 15 +12 12V 67P Left Cab Window Motor CB22 15 +12 12V 67R Right Cab Window Motor CB23 5 +12 12V 65 AM/FM Radio CB24 10 +12 12V 67C Cigar Lighter CB25 5 +24 21 21S Start Circuit Signal CB26 5 +24 13 31 Electronic Display Panel (Instrument Panel) CB27 5 +24 13 38 Message Display panel (MOM) CB28 5 +24 13 13A Payload Meter - ACC Signal CB29 5 +24 12 12PC SNET to DAD Interface Connector CB30 5 +24 12 67AS Operator seat Air Pump CB31 10 +24 12 52P Brake System Components CB32 10 +24 11 42 Engine Service Lights LOCATION:

PASSENGER SEAT BASE RELAY BOARD RB1 CB13 12.5 +24 11T 11CL Turn Signal Lights CB15 12.5 +24 11 11T Dash Lights/Turn Signal/Clearance Lights RELAY BOARD RB4 CB20 - - 712S 439E Not Used CB21 12.5 +24 11 43 Steering Bleeddown Solenoid, Horn & Service Lights CB22 - - 712S 23F Not Used RELAY BOARD RB5 CB23 12.5 +24 11 11DL Left Low Beam Headlight CB24 12.5 +24 11 11DR Right Low Beam Headlight CB25 12.5 +24 11 11HL Left High Beam Headlight CB26 12.5 +24 11 11HR Right High Beam Headlight CB27 12.5 +24 11 11D Turn/Clearance Light Control LOCATION: OVERHEAD DASH PANEL DC-CB 0.5 +24 38B 38A DC/DC Converter, MOM Display