ACTION ALARM DISPLAY DATA LINK CAT DATA LINK INPUT COMPONENTS
AUTO RETARDER CONTROL
TRANSMISSION CONTROL
ENGINE CONTROL
INPUT COMPONENTS
XI. CAT MONITORING SYSTEM 1. 2. 3. 4.
Components Layout Operation Maintenance Testing & Adjusting Adolfo August 1997
Page: XI-1
CATERPILLAR MONITORING SYSTEM GAUGE CLUSTER MODULE
TACHOMETER MODULE
MESSAGE CENTER MODULE
°C
kPa
Miles
KM
RPM
...
ACTION LAMP
Liter SERV CODE X10
ACTION ALARM
INPUT COMPONENTS
AUTO RETARDER CONTROL
TRANSMISSION CONTROL
ENGINE CONTROL
INPUT COMPONENTS
777D Off Highway Truck
CAT DATA LINK
CHAPTER : CAT MONITORING SYSTEM
DISPLAY DATA LINK
Page: XI-2
CATERPILLAR MONITORING SYSTEM MAIN DISPLAY
FOUR GAUGE CLUSTER MODULE
ALERT INDICATORS ACTION LAMP
AUT
20 25 X100
R 24 V
0
MPH km/h
44
30
SPEEDOMETER / TACHOMETER MODULE MESSAGE CENTER MODULE
MESSAGE DISPLAY
777D Off Highway Truck
5
CHAPTER : CAT MONITORING SYSTEM
P
15 10
Page: XI-3
DASH INDICATORS
LEFT TURN
20
5
X100
R 24 V
0
MPH km/h
30
SECONDARY STEERING RETARDER
777D Off Highway Truck
REVERSE
ACTION LAMP
25
CHAPTER : CAT MONITORING SYSTEM
BODY UP
HIGH BEAM
RIGHT TURN
15 10
Page: XI-4
FOUR GAUGE CLUSTER MODULE
BRAKE OIL TEMPERTURE ENGINE COOLANT TEMPERATURE
The four systems monitored by the Four Gauge Cluster Module are: - Engine Coolant Temperature Maximum temperature: 107 ° C (Data link) - Brake Oil Temperature - Maximum temperature 121 ° C - System Air Pressure - Minimum pressure 70 Psi. - Fuel Level - Minimum 8 %.
777D Off Highway Truck
SISTEM AIR PRESSURE
CHAPTER : CAT MONITORING SYSTEM
FUEL LEVEL
Page: XI-5
SPEEDOMETER / TACHOMETER MODULE
15 10
GROUND SPEED
25 X100
MPH km/h
30
ACTUAL GEAR
777D Off Highway Truck
0
RPM
CHAPTER : CAT MONITORING SYSTEM
5
20
777D Off Highway Truck CHAPTER : CAT MONITORING SYSTEM
MESSAGE CENTER MODULE PARKING BRAKE ON BRAKE CYLINDER OVERSTROKE\ ENGINE OIL PRESSURE
BATTERY VOLTAGE "R" TERMINAL Hz
TORQUE CONVERTER OIL / BRAKE OIL TEMPERATURE
ENGINE MAINTENACE REQUIRED (777D ONLY)
P
ALERT INDICATORS
! CHECK ENGINE LIGHT
AIR FILTER RESTRICTION LOSS OF STEERING FLOW
44
SERV CODE LOSS OF COOLANT FLOW
TRANMISSION FILTER RESTRICTION
MESSAGE DISPLAY ACTIVE CODE INDICATOR
There are 10 Alert Indicators, which are: - Engine Oil Pressure - Minimum pressure: LI 6.4 Psi and HI 36 Psi. - Parking Brake ON or Parking Brake Master Cylinder Overstroke. - TC Oil Temperature /Brake Oil Temperature - Maximum Temperature 121° - Battery Charging- - Mininmum Voltage 23 Volts - Minimum "R" Terminal Frequency 95 Hz/ 20V - Engine Maintenance Required (777 D only) Fuel Filter Restriction, Add Oil. - Air Filter Restriction - Maximum Restriction: 25 " of H20 (3500) - Steering Flow - Transmision Oil Filter restricted - Maximum differential pressure 36 Psi - Engine Coolant Flow - Check Engine - MID 036 Fault Codes or Events.
Page:
XI-6
Page: XI-7
SECONDARY STEERING AND BRAKE RETRACTION
AUTO RETARDER
AUT
TRACTION CONTROL SYSTEM TEST
LIGHTS
ETHER STARTING AID
AIR CONDITIONING
777D Off Highway Truck
THROTTLE BACK-UP
CHAPTER : CAT MONITORING SYSTEM
OPERATOR SCROLL
Page:
XI-8
INPUT COMPONENTS • SWITCHES
777D Off Highway Truck
• SENSORS
CHAPTER : CAT MONITORING SYSTEM
• SENDERS
Page: XI-9
SWITCH - TYPE INPUTS -UNCOMMITTED SWITCH INPUTS: OPERATE TEN ALERT INDICATORS NORMALLY GROUNDED & INDICATOR OFF FLASHES IF ABNORMAL CONDITION EXISTS 777D Off Highway Truck
-SERVICE SWITCH INPUTS: MACHINE SETUP MODE OF OPERATION DIAGNOSTIC FUNCTIONS
CHAPTER : CAT MONITORING SYSTEM
-PROGRAMMING SWITCH INPUTS: HARNESS CODES (6 INPUTS OPEN OR GROUNDED) IDENTIFIES SPECIFIC MACHINE MODEL
Page: XI-10
SENDER - TYPE INPUTS
777D Off Highway Truck
-70- 800 OHM SENDERS: CONTACTS 8, 10, 28, 38 OF MAIN DISPLAY MODULE OPERATES GAUGE, ALERT INDICATOR OR BOTH HYD OIL TEMP (10), T.C. TEMP (28)
CHAPTER : CAT MONITORING SYSTEM
- 0-240 OHM SENDERS: CONTACTS 9 & 18 OF MAIN DISPLAY MODULE OPERATES GAUGE, ALERT INDICATOR OR BOTH FUEL LEVEL SENDER (18)
Page: XI-11
SENSOR - TYPE INPUTS
777D Off Highway Truck
-FREQUENCY SENSORS: AC FREQUENCY (Hz) SIGNAL OPERATES SPEEDOMETER/TACHOMETER MODULE ENGINE SPEED, XMS OUTPUT SPEED
CHAPTER : CAT MONITORING SYSTEM
- PWM (DIGITAL): DUTY CYCLE SIGNAL OPERATES GAUGE T.C. OIL TEMP, BRK AIR PRESS, BRK OIL TEMP FUEL LEVEL(ULTRASONIC) (NOT 777D) D.C. SIGNAL
Page: XI-12
WARNING OPERATION ACTION LAMP ALERT INDICATORS
P
15 10 5
25 X100
R 24 V
AUT
20
0
MPH km/h
30
777D Off Highway Truck
CHAPTER : CAT MONITORING SYSTEM
WARNINGS LEVEL 1 : ALERT INDICATOR FLASHES (10 Hz)/GAUGE IN RED LEVEL 2 : ALERT INDICATOR FLASHES (10 Hz)/GAUGE IN RED ACTION LAMP FLASHES (1 Hz) LEVEL 3 : ALERT INDICATOR FLASHES (10 Hz)/GAUGE IN RED ACTION LAMP FLASHES (1 Hz) ACTION ALARM SOUNDS
44
777D Off Highway Truck CHAPTER : CAT MONITORING SYSTEM
OPERATOR MODES
INPUTS
SERVICE METER MODE
ODOMETER MODE
DIGITAL TACHOMETER MODE
RESETTABLE LOAD COUNTER MODE
DIAGNOSTIC SCROLLING MODE
SERV CODE
41.4
XI-13
(During CRANKING the display will show "P" if the engine is equipped with the Caterpillar Engine Pre-Lubrication System. If the Ether starting aid is installed an "E" will also appear during cranking)
Fuel LevelSender or Circuit Open or Shorted to Bat + Torque Converter Temperature Sensor Shorted to Ground (Bat -) Torque Converter Temperature Signal is incorrect CAT Data Link Communication Abnormal 8 V Sensor Power Supply Shorted to BAt + 8 V Sensor Power Supply Shorted to ground (Batt -) Action Alarm or circuit shorted to Bat + Action Alarm open Circuit Action Alarm or circuit shorted to ground (Bat -) Action Lamp or Circuit Shorted to Bat + Action Lamp Open Circuit Action Lamp or Circuit shorted to Ground Brake AIr pressure Sensor signal Incorrect Display Data Link Error 9V Display Supply Shorted to Bat + 9V Display Supply Shorted to Ground (Batt-) Brake Oil Temperature Sensor Signal Incorrect
