WORKHORSE CUSTOM CHASSIS
Service Manual
2007 W Series
SECTION
7.2
PAGE
132
Automatic Transmission – Allison
2007 W Series Chassis
© 2006 Workhorse Custom Chassis — All Rights Reserved
WSM082106
DTC P0658
Step
Action
Value
Yes
No
9
Replace the open or shorted solenoid. Refer to Control Valve Solenoid
Replacement.
Did you complete the replacement?
—
Go to Step 11
—
10
IMPORTANT:
In most cases, the TCM is not at fault. Investigate thor-
In most cases, the TCM is not at fault. Investigate thor-
oughly before replacing the TCM.
oughly before replacing the TCM.
Replace the TCM. Refer to Control Module References for replacement,
setup, and programming.
Did you complete the replacement?
—
Go to Step 11
—
11
Perform the following procedure in order to verify the repair:
1. Clear the DTC.
2. Start the engine.
3. Select Specific DTC.
4. Enter DTC P0658.
Has the test run and passed?
—
Go to Step 12
Go to Step 2
12
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
