TROUBLESHOOTING FLASH CODE 38
[b] If active code 94/3 and any other codes except code 94/4 are logged, check to ensure
ECM and FPS connectors are wired properly. Refer to section 38.3.3.
Engine Harness Connector to Fuel Pressure Sensor
Check Fuel Pressure Sensor Connectors
Perform the following steps to check the FPS connectors.
1. Inspect terminals at the FPS connectors (both the sensor and harness side) for damage:
bent, corroded, and unseated pins or sockets.
[a] If the terminals and connectors are damaged, repair them and refer to section 38.3.12.
[b] If the terminals and connectors are not damaged, replace the FPS and
refer to section 38.3.12.
Check for +5 Volts
Perform the following steps to check for +5 volts.
1. Turn vehicle ignition OFF.
2. Remove jumper wire.
3. Turn ignition ON.
4. Measure voltage on FPS harness connector, socket C to socket A. See Figure 38-3.
[a] If the voltage measurement is greater than 6 volts, refer to section 38.3.9.
[b] If the voltage measurement is less than 4 volts, refer to section 38.3.7.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION