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Producto: EXCAVATOR
Modelo: 320C EXCAVATOR CLM
Configuración: 320C U 320C LU Excavators CLM00001-UP (MACHINE)
POWERED BY 3066 Engine
Pruebas y Ajustes
312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C
MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control
Número de medio -RENR3814-17 Fecha de publicación -01/04/2007 Fecha de actualización -18/04/2007
i02149330
Troubleshooting Diagnostic Codes
SMCS - 7569
Table 1
Component Identification (CID)
CID No. Name Of Component
91
(Not in 321C)
Throttle position signal
96 Fuel level sensor
110 Engine coolant temperature sensor
167 Alternator
168 Voltage to the power supply (keyswitch)
190 Speed sensor
248
( 319C, 320C, 322C, 325C, and 330C ONLY) Cat Data Link
254
( 312C, 315C, and 321C ONLY)
271
( 312C, 315C, and 321C ONLY)
286
(Not in 321C)
Electronic Control Module (ECM)
Action Alarm
Engine oil pressure fault
374 Swing brake solenoid
376 Travel alarm
581 Proportional reducing valve for the power shift pressure
586 Engine speed dial
587 Feedback of the governor actuator
588 Communication problem between controller and monitor
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( 312C, 315C, and 321C ONLY)
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590 Engine controller
598 Automatic travel speed solenoid
600 Hydraulic oil temperature sensor
1161 Pressure sensor for the delivery pump (1)
1162 Pressure sensor for the delivery pump (2)
1525 Straight travel solenoid
2002
( 319C, 320C, 322C, 325C, and 330C ONLY) Travel alarm
Illustration 1 g00691520
Example Of A Typical Troubleshooting Procedure
(1) Preparations
(2) Description of the problem
(3) Error code on the display
(4) Items that require checking
(5) Probable cause and solution
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"C-ground"
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"R-ground"
Illustration 2 g00987164
Diagram Of Terminology For The Troubleshooting Procedures
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(6) Number of the terminal in the connector
(7) Indication of the short circuit
(8) Number of the connector
(9) "M" Male "F" Female
1. Description (Items that require checking)
2. Measurement of Voltage
(A) - (B) : 24 V
Voltage is measured at the later terminal. For example, the red test pin + is connected to terminal "A"
and the black test pin - is connected to terminal "B".
3. Meaning of Symbols
a. The following list describes the meaning of specific symbols:
"C-ground" : Ground terminal for the chassis
"P-ground" : Ground terminal for the platform
"R-ground" : Ground terminal for the relay panel
"Cab-ground" : Ground terminal for the cab
4. Preliminary Check
a. Connector
Check the connection of the connector before a troubleshooting procedure is performed. Inspect
the connector for moisture. Moisture in a connector can cause a poor connection. Ensure that the
connectors are mating correctly. Ensure that the pins in the connector are secure.
b. Continuity
Ensure that continuity is present between the following items:
"C-ground" - "P-ground"
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5. Preparation
Wed Jan 18 12:03:50 UTC+0100 2012
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a. Turn the key start switch to the OFF position.
b. The hydraulic control lever is in the LOCKED position.
c. Ensure that the controller, the harnesses and the connectors are connected.
"P-ground" - "Cab-ground"
Turn the disconnect switch to the OFF position before you perform the continuity checks. The
power is OFF in order to prevent damage to the tester and the circuit.
Note: Ensure that disconnected wires do not contact the machine in order to avoid damage to
electrical components when power is applied.
Copyright 1993 - 2012 Caterpillar Inc.
Todos los derechos reservados.
Red privada para licenciados del SIS.
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