DDEC TROUBLESHOOTING
[b] If terminals and connectors are not damaged, replace the FTS. Refer to section 23.3.6.
Figure 23-4
Fuel Temperature Sensor
23.3.4
Open Line Check
Perform the following steps to check for an open line.
1. Turn ignition OFF.
2. Disconnect the engine harness connector at the ECM. The jumper wire is still in place at
the FTS connector.
3. Measure resistance between sockets R3 and Y2 on the engine harness connector.
See Figure 23-5.
[a] If the measured resistance is greater than 5
or open, the signal line #472 or return
line #452 is open. Repair the open; refer to section 23.3.6.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
23-7
