Spn 701/Fmi 5 - Detroit Diesel Series 60 DDEC VI Troubleshooting Manual

29.3

SPN 701/FMI 5

[b] If the resistance is greater than 5 Ω, contact the Detroit Diesel Customer Support
Center (313–592–5800) for authorization to replace the MCM.
29.2.2.1 Verify Repairs
Verify repairs as follows:
1. Reconnect all connectors.
2. Turn the ignition ON, and clear codes.
3. Start and run the engine for one minute. Stop the engine.
4. Check for codes
[a] If no codes are present, troubleshooting is complete.
[b] If code 701/4 is not logged but other codes are logged, troubleshoot the other codes.
[c] If code 701/4 and other codes are logged repeat troubleshooting procedure. If no
error is found, contact the Detroit Diesel Customer Support Center (313–592–5800).
29.3 SPN 701/FMI 5
This fault code indicates that there is an open circuit.
29.3.1 Open Circuit Check
Check as follows:
1. Check for multiple codes.
[a] If SPN 701/5 and SPN 706/5 are active repair the open in between the pin 91 of the
120–pin MCM connector and the Jake Brake solenoids.
[b] If only SPN 701/5 is active, go to step 2.
2. Put the ignition switch in the OFF position.
3. Disconnect the injector harness 23–pin connector.
4. Measure the resistance between pin A and pin C on the valve cover side of the connector.
[a] If the resistance is less than 10 Ω, go to step 10.
[b] If the resistance is greater than 10 Ω, go to step 5.
5. Remove the valve cover.
6. Disconnect the Jake Brake solenoid 1, 2, 3.
7. Measure the resistance between pin 1 of the Jake Brake solenoid and pin A of the injector
harness 23–pin connector.
[a] If the resistance is greater than 3 Ω, repair the open between pin 1 of the Jake Brake
solenoid and pin A. Refer to section 29.3.1.1.
29-6
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All information subject to change without notice.