DDEC TROUBLESHOOTING
[b] If terminals and connectors are not damaged, install a test ECM.
Refer to section 23.3.6.
Figure 23-6
ECM Engine Harness Connector
23.3.6
Verify Repairs
Perform the following steps to verify repairs:
1. Turn ignition OFF.
2. Reconnect all connectors.
3. Turn ignition ON.
4. Clear codes with DDR.
5. Start and run the engine for eight minutes.
6. Stop engine.
7. Read codes.
[a] If no codes are logged, troubleshooting is complete.
[b] If code 174/3 and any other codes are logged, all system diagnostics are complete.
Review this section from the first step to find the error. Refer to section 23.3.1.
[c] If code 173/4 is not logged, but other codes are logged, refer to section 9.1.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
23-9
