0022-13 Check Timing Sensor Calibration (42)

102

TM 9-2320-312-24-2

Troubleshooting Section

Note: If the "PTO Configuration" is programmed to

Engine Response The injector may not operate

"Remote Throttle", the ECM must receive a proper

while the conditions exist. If the problem is in the

signal from the remote accelerator position sensor

common return line, neither injector will operate.

at all times. The remote throttle signal must be

present even when the PTO ON/OFF switch is in the

Troubleshooting:

OFF position.

Perform the following diagnostic procedure:

"Injector Solenoid Circuit - Test"

System Response:

Electronic System Response The ECM returns the

Results:

engine to low idle when the problem is detected.

OK STOP.

Service Tool Display or Lamps Caterpillar

Electronic Technician (ET) will display "0%" and

i01643489

"DIAG" next to "Throttle Position" on the status

0022-13 Check Timing Sensor

screen while the diagnostic code is active.

Calibration (42)

Engine Response The engine will remain at low

idle while the diagnostic code is active.

SMCS Code: 1912-038

Troubleshooting:

Conditions Which Generate This Code:

The diagnostic code is probably caused by an

The timing has not been calibrated since the ECM

open circuit in the signal circuit for the accelerator

was installed or the calibration is out of specification

pedal position or an open circuit in the 12 volt

by an amount that is greater than the amount that

sensor supply voltage circuit. An abnormal change

is allowed by the ECM.

in the signal frequency can also cause this code.

System Response:

Perform the following diagnostic procedure:

"Remote PTO Accelerator Position Sensor Circuit -

Electronic System Response The ECM uses

Test"

default timing. Timing can be out of specification by

as much as 4 degrees.

Results:

Engine Response The engine may run rough or the

OK STOP.

engine may emit white smoke in the exhaust. There

may not be any noticeable performance effect.

i01638590

Troubleshooting:

0030-13 PTO Throttle Sensor

Calibration (29)

Perform the following diagnostic procedure: "Engine

Speed/Timing Sensor - Calibrate"

SMCS Code: 1913-524

Results:

Conditions Which Generate This Code:

OK STOP.

The PTO Configuration is a Customer Parameter.

The PTO Configuration is programmed to "Remote

i01638584

Throttle". The duty cycle of the signal for the PTO

0030-08 Invalid PTO Throttle

Accelerator is less than 5 percent or more than 95

percent.

Signal (29)

System Response:

SMCS Code: 1913-038

Electronic System Response The ECM returns the

Conditions Which Generate This Code:

engine to low idle when the problem is detected.

The "PTO Configuration" is a Customer Parameter.

Service Tool Display or Lamps Caterpillar

The "PTO Configuration" is programmed to "Remote

Electronic Technician (ET) will display "0%" and

Throttle". The ECM is not receiving a correct signal

"DIAG" next to "Throttle Position" on the status

for the PTO Accelerator.

screen while the diagnostic code is active.