WORKHORSE CUSTOM CHASSIS
Service Manual
2007 W Series
SECTION
7.2
PAGE
298
Automatic Transmission – Allison
2007 W Series Chassis
© 2006 Workhorse Custom Chassis — All Rights Reserved
WSM082106
DTC P0872
Step
Action
Yes
No
12
IMPORTANT:
Prior to replacing the TCM, swap the TCM with a known good TCM.
Prior to replacing the TCM, swap the TCM with a known good TCM.
In most cases, the TCM is not at fault. Investigate thoroughly before
In most cases, the TCM is not at fault. Investigate thoroughly before
replacing the TCM.
replacing the TCM.
Replace the TCM. Refer to Control Module References for replacement, setup, and
programming.
Did you complete the replacement?
Go to Step 13
—
13
Perform the following procedure in order to verify the repair:
1. Clear the DTC.
2. Start the engine.
3. Using the scan tool, monitor PS3 status.
4. Select Specific DTC.
5. Enter DTC P0872.
Has the test run and passed?
Go to Step 14
Go to Step 2
14
With the scan tool, observe the stored information, capture info, and DTC Info.
Does the scan tool display any DTCs that you have not diagnosed?
Go to Diagnostic
Trouble Code (DTC)
List - Vehicle
System OK
