Rear Electrical Compartment; Lockup Clutch - Komatsu HD1500-7 Operation & Maintenance Manual

OM3238 9/11

REAR ELECTRICAL COMPARTMENT

The following components are located behind the
operator and passenger seats across the back wall
of the operator cab (Refer to Figure 32-19):
1. ATC - Automatic Transmission Controller
The ATC controls and monitors the automatic
transmission. It controls the shift patterns and
lock-up clutch modulation and monitors numer-
ous other sensor inputs. Refer to the service
manual for specific information regarding this
device.
2. Fuse Panel
The fuse panel contains all of the electrical
fuses on the truck.
3. RCM - Retard Control Module
This panel controls and monitors the retarder
system. Refer to the service manual for specific
information regarding this device.
4. Vehicle Health Monitoring System (VHMS)
The VHMS controller gathers data related to the
operational health of the machine from each of
the controllers and sensors. Refer to Section
60, VHMS, for more information.
5. VHMS Download Connector
6. Payload Meter (PLM) Download Connector
7. CENSE Engine Download Connector -
(SDA12V160 only)
8. Engine Maintenance Light -
The engine maintenance light will
illuminate when engine mainte-
nance is necessary. It is not nec-
essary to service the truck until
the next scheduled preventive
maintenance.
9. Engine Communications Connector
CIRCUIT BREAKER IDENTIFICATION
No. AMPS
CB24V 50
CB12V 50
A/C-CB 20
TABLE I. CIRCUIT BREAKER CHART
CIRCUIT NUMBER
VOLTS IN OUT
LOCATION: BATTERY BOX
+24 3 12
+12 4 12V
LOCATION: AC/HEATER UNIT
+24 12AC
Operator Cab and Controls - Section 32
FIGURE 32-18. FUSE PANEL DESCRIPTIONS
CONTROL DESCRIPTION
24 Volt Control Power (To Power Bus #3 on Cab Rear Wall)
12 Volt Control Power (To Power Bus #4 on Cab Rear Wall)
- Internal Automatic Reset Circuit Breaker
Page 32-37