MBE 4000 DDEC VI Troubleshooting

Section 35.3 SPN 175/FMI 4

Section 35.3
SPN 175/FMI 4

This diagnosis is typically oil temperature sensor open short to ground.‪

Section 35.3.1
Check for Short to Ground

Check for a short to ground as follows:‪

  1. Disconnect the Engine Oil Pressure/Temp Sensor.
  2. Disconnect the 120–pin MCM connector.
  3. Measure the resistance between pin 2 of the Engine Oil Pressure/Temp Sensor and ground.
    1. If the resistance is greater than 5Ω, replace the Engine Oil Pressure/Temp SensorRefer to "35.3.1.1 Verify Repairs" .
    2. If the resistance is less than 5Ω, repair the short between pin 108 of 120–pin MCM connector and ground. Refer to "35.3.1.1 Verify Repairs" .
Section 35.3.1.1
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 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568
Generated on 10-13-2008

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