Series 60 DDEC VI Troubleshooting – Section 57.1 SPN 641/FMI 7

Section 57.1
SPN 641/FMI 7

This code typically means the Smart Remote Actuator 5 is in Failsafe Mode, Motor On.‪

Section 57.1.1
Actuator Check

Check as follows:‪

  1. Using DDDL 7.0, perform the Turbo Hysteresis test.
    1. If the test results pass, repeat the hysteresis test. If results are the same, refer to "57.1.1.1 Verify Repairs" . If the test results fail, go to the next step.
    2. If the test results fail, go to the next step.
  2. Turn the ignition OFF.
  3. Inspect the turbocharger electrical connectors.
    1. If bent, corroded or damaged pins are found, repair as necessary. Refer to "57.1.1.1 Verify Repairs" .
    2. If electrical connections are OK, go to the next step.
  4. Remove the turbo actuator.
  5. Physically move the sector gear on the turbocharger from 1 to 2, see Figure "Moving the Sector Gear" .
    Click to see this graphic in a separate window

     1. Alignment Hole – Alignment pin fits into housing‪

     2. Reference Indentation – Sector shaft covers one-half of indentation‪

    Figure 1. Moving the Sector Gear

  6. Check the free movement from 1 to 2 (see Figure "Moving the Sector Gear" ), return back to 1 and install the pin to insure proper alignment. Once you have proper alignment, remove the pin.
    1. If there is free movement, replace the turbo actuator. Refer to "57.1.1.1 Verify Repairs" .
    2. If there is not free movement, go to the next step.
  7. Remove the turbocharger and inspect for signs of foreign material contamination.
    1. If foreign material damage is found, repair the source of material entry and contact the Detroit Diesel Customer Support Center at 313–592–5800 for turbocharger replacement authorization.
    2. If no foreign material damage is found but there is no free movement, contact the Detroit Diesel Customer Support Center at 313–592–5800 for turbocharger replacement authorization.
Section 57.1.1.1
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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