DDEC TROUBLESHOOTING
15.3 TROUBLESHOOTING FLASH CODE 15
The following procedure will troubleshoot Flash Code 15.
15.3.1
Code Check
Perform the following steps to check for codes.
1. Turn vehicle ignition ON.
2. Plug in diagnostic data reader (DDR) and determine which code is logged.
[a] If codes PID 110-FMI 4 are logged, refer to section 15.3.2.
[b] If codes PID 175-FMI 4 are logged, refer to section 15.3.3.
15.3.2
Coolant Temperature Sensor Check
Perform the following steps to check the coolant temperature sensor (CTS).
1. Turn vehicle ignition OFF.
2. Disconnect (unplug) CTS connector.
3. Start and run the engine for eight minutes.
4. Read active codes with engine still running.
[a] If code 110/4 or any other codes are logged, refer to section 15.3.4.
[b] If any codes except code 110/4 are logged, refer to section 15.3.6.
15.3.3
Oil Temperature Sensor Check
Perform the following steps to check the oil temperature sensor (OTS).
1. Turn vehicle ignition OFF.
2. Disconnect OTS connector. See Figure 15-2.
3. Start and run the engine for eight minutes.
4. Read active codes with engine running.
[a] If code 175/4 is logged, refer to section 15.3.7.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
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