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Service and Maintenance
Dynamometer Test Mode
In cases when vehicle dynamometer testing is required, the transmission sys-
tem can be put into a dyamometer test mode.
Note:
Transmission Control Module (TCM) software 5516062 or greater is
required to support dynamometer test mode.
Use the following procedure to activate Dynamometer Test Mode in the TCM.
WARNING:
Refer to dynamometer manufacturer’s instructions regarding vehi-
cle setup and testing. Failure to follow these instructions could cause unin-
tended vehicle movement and may result in major vehicle component
damage, property damage, severe injury or death.
Vehicle and Transmission System Requirements:
•
Key on with engine off.
•
Ensure the vehicle is at a complete stop.
•
Neutral (N) is selected on the transmission driver interface device.
•
Solid “N” is indicated in the gear display.
To Activate Dynamometer Test Mode:
1. Key on with engine off.
2. Depress and hold the vehicle service brake.
3. Perform the following sequence using the transmission driver interface
device within 20 seconds.
a.
Start in Neutral (N)
b.
Select Drive (D)
c.
Select Manual Mode (M)
d.
Select Drive (D)
e.
Select Reverse (R)
f.
Select Drive (D)
g.
Select Neutral (N)
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