320D Excavator BZP00001-UP (MACHINE) POWERED BY C6.4 Engine(SEBP5228 - ...
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Product: EXCAVATOR
Model: 320D EXCAVATOR BZP
Configuration: 320D Excavator BZP00001-UP (MACHINE) POWERED BY C6.4 Engine
Troubleshooting
C4.2 and C6.4 Engines for Caterpillar Built Machines
Media Number -KENR5342-21 Publication Date -01/11/2012 Date Updated -07/11/2012
i02980286
Intake Manifold Air Pressure Is Low
SMCS - 1058-035-PX
Use this procedure in order to troubleshoot high intake manifold air (boost) pressure or use this
procedure if the following event code is active. Refer to Troubleshooting, "Event Codes" for
information about event codes and the default trip points for these codes. You must access the
monitoring system on Caterpillar Electronic Technician (ET) in order to view the current trip points
for these codes.
Table 1
Event Code
Default Conditions which
Description System Response
Generate this Code
The warning lamp will illuminate, if
equipped.
The intake manifold air (boost)
E1045(2) Low Intake The code is logged.
pressure is below the trip point.
Manifold Pressure The engine will be shutdown and the
keyswitch must be cycled in order to
restart.
Probable Causes
Diagnostic codes
Air inlet and exhaust restrictions
Turbocharger
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Diagnostic Codes
Check for active diagnostic codes on Cat ET. Troubleshoot any active codes before continuing with
this procedure.
Air Inlet and Exhaust Restrictions
1. Check the air filter restriction indicator, if equipped. Clean plugged air filters or replace
plugged air filters. Refer to the Operation and Maintenance Manual.
2. Check the air inlet and exhaust system for restrictions and/or leaks. Refer to Systems
Operation/Testing and Adjusting.
Turbocharger
Note: The turbocharger that is installed on this engine is a nonserviceable item. If any mechanical
fault exists, except for the wastegate actuator (if equipped), then the turbocharger must be replaced.
The wastegate actuator can be replaced.
1. Check the following items:
Check for correct installation of the turbocharger.
Check that the turbine blades rotate freely.
Check that the oil drain is not blocked or restricted.
Check that the housing for the turbocharger is free of dirt and debris.
Check for leaks between the turbocharger and the intake manifold.
2. Check for correct operation of the wastegate (if equipped). If the wastegate actuator (if
equipped) is faulty, replace the wastegate actuator (if equipped). Refer to Disassembly and
Assembly.
3. If necessary, replace the turbocharger. Refer to Disassembly and Assembly.
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