Spn 168/Fmi 0; Measure Battery Voltage - Detroit Diesel Series 60 DDEC VI Troubleshooting Manual

12.1 SPN 168/FMI 0

This diagnosis is typically battery voltage high.
12.1.1

Measure Battery Voltage

Check as follows:
1. Measure battery voltage with the engine running at maximum rpm.
2. If greater than 16 volts, check for proper alternator operation and repair or replace, as
required. Refer to section 12.1.1.1.
12.1.1.1 Verify Repairs
Verify repairs as follows:
1. Turn the vehicle ignition OFF and reconnect all connectors.
2. Turn the vehicle 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 168/0 is not logged but other codes are logged, troubleshoot the other codes.
[c] If code 168/0 and other codes are logged repeat troubleshooting procedure. If no
error is found, contact the Detroit Diesel Customer Support Center (313–592–5800).
All information subject to change without notice.
PRELIMINARY 6SE567 0512 Copyright © 2005 DETROIT DIESEL CORPORATION
DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
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