Section 84.3 SPN 1172/FMI 4

Section 84.3
SPN 1172/FMI 4

This code is typically sensor or circuit failed low.‪

Section 84.3.1
Short Circuit Check

Check as follows:‪

  1. Turn the ignition OFF.
  2. Disconnect the TCI Sensor.
  3. Disconnect the 120–pin MCM connector.
  4. Measure resistance between pin 1 and pin 2 of the TCI Sensor Harness connector.
    1. If the resistance is less than 3 Ω, repair the short between pin 1 and pin 2 of the TCI Sensor Harness connector and pin86 and pin 88 of the 120–pin MCM connector. Refer to "84.3.1.1 Verify Repairs" .
    2. If the resistance is greater than 3 Ω, repair the short to ground between pin 2 of the TCI Sensor and pin 86 of the 120–pin MCM connector. Refer to "84.3.1.1 Verify Repairs" .
Section 84.3.1.1
Verify Repairs

Verify repairs as follows:‪

  1. Turn ignition OFF.
  2. Reconnect any electrical connections that were disconnected to perform the diagnosis.
  3. Clear codes with DDDL 7.0 or latest version.
  4. Start and bring engine up to operating temperature (over 140°F/60°C).
  5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps illuminate, troubleshoot the codes. If assistance is required, call the Detroit Diesel Customer Support Center at 313–592–5800.


EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567
Generated on 10-13-2008

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