Series 60 DDEC VI Troubleshooting – Section 67.1 SPN 704/FMI 3

Section 67.1
SPN 704/FMI 3

This diagnosis is typically a short to power.‪

Section 67.1.1
Short to Power Check

Check as follows:‪

1. Disconnect the turbo actuator connector.
2. Turn the ignition ON (key ON, engine OFF).
3. Measure the voltage between pin 3 of the turbo actuator connector and chassis ground.
   1. If the voltage is greater than 4.5 volts, repair the short to power between pin 3 of the turbo actuator connector and pin 35 of the 120–pin MCM connector. Refer to "67.1.1.1 Verify Repairs" .
   2. If the voltage is less than 4.5 volts, go to step 4 .
4. Turn the ignition OFF.
5. Disconnect the 120–pin MCM connector.
6. Measure the resistance between pin 1 and pin 3 of the turbo actuator connector.
   1. If the resistance is less than 5 Ω, repair the short between pins 1 and 3 of the turbo actuator connector and pins 35 and 93 of the 120–pin MCM connector. Refer to "67.1.1.1 Verify Repairs" .
   2. If the resistance is greater than 5 Ω, refer to "67.1.1.1 Verify Repairs" .

Section 67.1.1.1
Verify Repairs

Verify repairs as follows:‪

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.