DD15 Troubleshooting

Section 132.1 SPN 4258/FMI 3

Section 132.1
SPN 4258/FMI 3

This diagnosis is typically injector #1, 2, or 3 amplifier control valve circuit is shorted to battery/power.‪

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Check as follows:‪

  1. Disconnect the Front Injector Harness 14–pin connector.
  2. Turn the ignition ON (key ON, engine OFF).
  3. Measure the voltage between pin 2 on the MCM side of the Front Injector Harness 14–pin connector and ground.
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    1. If there is voltage present, repair the short to power between pin 2 of the Front Injector Harness 14–pin connector and pin 14 of the 120–pin MCM connector. Refer to "132.1.1 Verify Repairs" .
    2. If there is no voltage present, go to the next step.
  4. Measure the voltage between pin 4 on the MCM side of the Front Injector Harness 14–pin connector and ground.
    1. If there is voltage present, repair the short to power between pin 4 of the Front Injector Harness connector and pin 10 of the 120–pin MCM connector. Refer to "132.1.1 Verify Repairs" .
    2. If there is no voltage present, repair the short to power between pin 6 of the Front Injector Harness connector and pin 12 of the 120–pin MCM connector. Refer to "132.1.1 Verify Repairs" .

Section 132.1.1
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.
    warning

    ENGINE EXHAUST

    To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

  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 DD15 Troubleshooting Guide - DDC-SVC-MAN-0029
Generated on 10-13-2008

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