Description
NUMBER: 11–25–13
S.M. REF.: Listed in Table
ENGINE: EPA07 Series 60
DATE: November 2013
SUBJECT: SPN 1172/FMI 3
ADDITIONS, REVISIONS, OR UPDATES
NOTE: Page numbers are based on the most recent version of the individual publication and may be adjusted throughout the annual print cycle.
SPN 1172/FMI 3
This code is typically sensor or circuit failed high.
OPEN CIRCUIT CHECK
Check as follows:
1. Turn the ignition ON (key ON, engine OFF).
2. Check for multiple codes.
[a] If 1172/3, 3250/3, 3242/3 and 3246/3 are present, go to step 3.
[b] If only 1172/3 is present, go to step 5
3. Disconnect the Turbo Compressor Inlet Temperature Sensor (TCI) Temperature Sensor.
4. Measure the voltage between pin 1 of the TCI Sensor and ground.
[a] If the voltage is greater than 2.75 volts, repair the short to power between pin 88 of the 120–pin MCM connector and the TCI Sensor, DOC Inlet Temperature Sensor, DOC Outlet Temperature Sensor and the DPF Outlet Temperature Sensor. Refer to section .
[b] If no voltage is present on pin 1 of the Intake Air Temperature Sensor, repair the open between pin 88 of the 120–pin MCM connector and the TCI Sensor, DOC Inlet Temperature Sensor, DOC Outlet Temperature Sensor and the DPF Outlet Temperature Sensor. Refer to section .
5. Disconnect the Turbo Compressor Inlet Temperature Sensor.
6. Measure the voltage between pin 1 and pin 2 of the Turbo Compressor Inlet Temperature Sensor.
[a] If the voltage is less than 2.75 volts, go to step 7.
[b] If the voltage is greater than 2.75 volts, replace the sensor. Refer to section .
7. Measure the voltage between pin 2 of the Turbo Compressor Inlet Temperature Sensor and ground.
[a] If the voltage is less than 2.75 volts, repair the open between pin 2 of the Turbo Compressor Inlet Temperature Sensor and pin 86 of the 120–pin MCM connector. Refer to section .
[b] If the voltage is greater than 2.75 volts, repair the open between pin 1 of the Turbo Compressor Inlet Temperature Sensor and pin 88 of the 120–pin MCM connector. Refer to section.
ADDITIONAL SERVICE INFORMATION
Additional service information is available in Power Service Literature.
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