38.3
TROUBLESHOOTING FLASH CODE 38
[a] If both resistance measurements are greater than 100
or open,
refer to section 38.3.11.
[b] If either resistance measurement is less than or equal to 100 , the signal line (#905)
and return line (#452) are shorted together, or the signal line (#905) is shorted to
battery ground. Repair the short. Refer to section 38.3.12.
38.3.11 Replace Fuel Pressure Sensor
Perform the following steps to replace the FPS.
1. Turn ignition switch OFF.
2. Replace FPS.
3. Reconnect all connectors.
4. Turn ignition ON.
5. Clear codes.
6. Start and run the engine for one minute.
[a] If check engine light comes on, refer to section 38.3.6.
[b] If check engine light does not come on, refer to section 38.3.12.
38.3.12 Verify Repairs
Perform the following steps to verify repairs.
1. Turn ignition switch OFF.
2. Reconnect all connectors.
3. Turn ignition ON.
4. Clear codes.
5. Start and run the engine for one minute.
6. Stop engine.
7. Check DDR for codes.
[a] If no codes are logged, troubleshooting is complete.
[b] If code 94/4 is not logged, and other codes are logged, refer to section 9.1.
[c] If code 94/4 is logged, and other codes are logged, all system diagnostics
are complete. Please review this section from the first step to find the error.
Refer to section 38.3.1.
All information subject to change without notice.
38-10
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
