0102-07 Excessive Boost Pressure

113

TM 9-2320-312-24-2

Troubleshooting Section

Note: This diagnostic code represents an critical

i01638741

event. This diagnostic code does not represent an

0102-07 Excessive Boost

electronic system fault.

Pressure

System Response:

SMCS Code: 1917-038

Electronic System Response The ECM does not

derate the power. Also, the ECM does not limit

Conditions Which Generate This Code:

the engine rpm or the vehicle speed due to this

diagnostic code.

The boost pressure is higher than the boost pressure

that is required for normal operating conditions.

The Check Engine Lamp will flash.

Note: The diagnostic code indicates a mechanical

The Warning Lamp will illuminate if the "Engine

problem. The ECM and the electronic control system

Monitoring" is programmed to "WARNING",

is operating correctly.

"DERATE", or "SHUTDOWN".

System Response:

This diagnostic code requires a Customer Password

in order to be cleared.

Electronic System Response Boost pressure is

set to 0 kPa (0 psi).

Service Tool Display or Lamps Caterpillar

Electronic Technician (ET) will display "DIAG" next

Service Tool Display or Lamps Caterpillar

to "Intake Manifold Air Temperature" on the status

Electronic Technician (ET) will indicate 0 kPa (0 psi)

screen while the diagnostic code is active.

and display "DIAG" next to "Boost Pressure" on the

status screen while the diagnostic code is active.

Engine Response This diagnostic code does not

The Check Engine Lamp will illuminate.

affect engine power.

Engine Response The engine may experience low

Troubleshooting:

power when the diagnostic code is active.

This diagnostic code indicates an excessive

Troubleshooting:

temperature in the air inlet manifold. This diagnostic

code does not indicate a problem with the ECM or

The diagnostic code indicates a problem with

a problem with the temperature sensor for the air

the turbocharger, the wastegate, or a pinched

inlet manifold.

turbocharger line. The diagnostic code does not

indicate a problem with the ECM or the electronic

Test Step 1. Check for Diagnostic Codes.

control system.

A. Connect ET to the cab data link connector.

Results:

B. Turn the keyswitch to the ON position. The

OK STOP.

engine should be off.

C. Check for any active diagnostic codes or logged

i01599498

diagnostic codes.

0105-00 High Inlet Manifold

Temp Warning (64)

Expected Result:

There should be no diagnostic codes that are

SMCS Code: 1921-038

present.

Conditions Which Generate This Code:

Results:

The engine has been running for at least 30

OK Proceed to Test Step 2.

seconds.

Not OK

The coolant temperature is above 99 C (210 F).

Repair: Repair the diagnostic codes that

The air temperature for the air inlet manifold is equal

are present. For further details, refer to

to 90 C (194 F) or above 90 C (194 F). "Engine

Troubleshooting, "Troubleshooting With a

Monitoring" must be programmed to "WARNING",

Diagnostic Code".

"DERATE", or "SHUTDOWN" before this diagnostic

code can occur.