DDEC TROUBLESHOOTING
[b] If either voltage measurement is greater than or equal to 0.2 volts, the VSS signal
(#556) or VSS return line (#557) is shorted to the battery or some other source of
voltage. Repair the short; refer to section 54.3.13.
Figure 54-4
5-Way ECM Power Connector
54.3.10 Check ECM Connectors
Perform the following steps to check ECM connectors.
1. Check the terminals at the ECM engine harness connectors for bent, corroded, and
unseated pins or sockets, on both the ECM and harness sides. See Figure 54-5.
[a] If the terminals and connectors are not damaged, refer to section 54.3.11.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
54-9
