KC-594

4/29/22, 10:49 AM
Article
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Volvo Chassis - Vehicles Equipped With
An Automated Manual Transmission Model F (
AMT-F, I-Shift ), Premium Tech Tool ( PTT ) Gearbox
Calibration Failure; Gearbox Calibration Operation
Stops And Fails At 33% When Run With
Transmission Removed From Th
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Internal Content
Follow the steps for the correct condition as described below:
A. Complete gearbox is replaced.
1. Reprogram the TECU on the new gearbox by starting with the old
TECU hooked to PTT, then move to the new TECU when instructed.
- This will transfer all the calibrations for the clutch and gearbox—
except the slip point—to the new TECU. This will allow the TECU to
start with a valid calibration.
2. Install the gearbox into the chassis.
3. Complete a gearbox and clutch calibration based on which
components were replaced to create new calibration values for the new
parts.
B. Complete gearbox or control housing replaced without using the
old TECU for data transfer
1. Perform another Programming event by starting with the old TECU
and transferring the calibrations to the New TECU.
- NOTE: Failure to transfer the calibrations to the new TECU will require
the gearbox to be reinstalled in the vehicle in order for calibration to be
completed. This may result in the need for the transmission to be
removed again if an issue with assembly is identified.
2. If the gearbox has been disassembled, verify that the gearbox is
assembled correctly by running the shifter tests in Tech tool.
- The presence of a valid calibration will allow the tests to run.
C. Short, Basic or Control housing/TECU only replaced.
1. Reprogram the TECU on the new gearbox by starting with the old
; Live UI
TECU hooked to PTT, then move to the new TECU when instructed.
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4/29/22, 10:49 AM
Article
- This will transfer all the calibrations for the clutch and gearbox—
except the slip point—to the new TECU. This will allow the TECU to start
with
a valid calibration.
2. If the gearbox has been disassembled, verify that the gearbox is
assembled correctly by running the shifter tests in Tech tool.
- The presence of a valid calibration will allow the tests to run.
3. Install the gearbox into the chassis.
4. Start the truck. Let it idle for at least 30 seconds. The clutch slip
point will calibrate automatically once chassis air pressure is high
enough to do so.
- NOTE: It is not necessary to complete another calibration
operation for this step.
VISIBILITY: Dealer distribution
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; Live UI
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