WORKHORSE CUSTOM CHASSIS
Service Manual
Automatic Transmission – Allison
2007 W Series
© 2006 Workhorse Custom Chassis — All Rights Reserved
SECTION
7.2
PAGE
157
2007 W Series Chassis
WSM082106
DTC P0711
Step
Action
Value
Yes
No
Schematic Reference: Automatic Transmission Controls Schematics
1
Did you perform the Diagnostic System Check - Vehicle?
—
Go to Step 2
Go to Diagnostic
System Check -
Vehicle
2
Measure the transmission fluid level. Refer to Transmission Fluid Checking
Procedure .
Is the transmission fluid level correct?
—
Go to Step 3
Go to
Transmission
Fluid Checking
Procedure
3
1. Install the scan tool.
2. Turn ON the ignition, with the engine OFF.
IMPORTANT:
Before clearing the DTC, use the scan tool in order to record
Before clearing the DTC, use the scan tool in order to record
the Freeze Frame and Failure Records for reference. The
the Freeze Frame and Failure Records for reference. The
Clear Info function will erase the data.
Clear Info function will erase the data.
3. Record the DTC Freeze Frame and Failure Records.
4. Clear the DTC.
5. Select TFT on the scan tool.
6. Drive the vehicle and look for an unrealistic TFT reading.
Is the TFT reading at or below the specified value?
1.5°C (2.7°F)
Go to Step 4
Go to Diagnostic
Aids
4
1. Turn the ignition OFF.
2. Disconnect the 80-way connector at the TCM.
3. Install the J 39700 breakout box, the J-47275 breakout box adapter
and the J 47275-1 magnetic overlay.
4. Turn ON the ignition, with the engine OFF.
5. Using the DMM, measure voltage at connector terminal 54 and
ground.
Is voltage within the specified value?
5 V
Go to Step 5
Go to Step 11
