DDEC TROUBLESHOOTING
[b] If resistance between sockets A3 and C3 is greater than or equal to 5
or open, the
vehicle +5 volt line (#916) is open. Repair the open. Refer to section 22.3.15.
Figure 22-6
Throttle Position Sensor
22.3.13 Check for Short to Battery +
Perform the following steps to check for a short to the battery +:
1. Turn ignition OFF.
2. Remove both fuses to ECM.
3. Disconnect the 5-way power connector at the ECM.
4. Measure resistance between socket D2 on the vehicle harness connector and the 5-way
power connector sockets A and C. See Figure 22-7.
[a] If measured resistance is greater than 100
or open, refer to section 22.3.14.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
22-11
