Golf III L4-1984cc 2.0L SOHC (1993)
Transmission Temperature Sensor/Switch: All Technical Service Bulletins
A/T - Erratic Shifting, No DTCs Stored in TCM
Group: 01
Number: 97-17
Date: Sept. 12, 1997
Subject:
Transmission, Erratic Shifting, No DTC's Stored in Transmission Control Module (TCM)
Model(s):
All with 4 speed Automatic Transmission (AG4)
Supersedes T.B. Group 01 Number 97-16 dated Aug. 27, 1997
Supersession due to temperature reading change.
Condition
Transmission holds shift too long, will not upshift or will unnecessarily downshift.
No DTC's stored in TCM.
May be caused by an incorrect oil temperature sensor reading from the "Conductor Strip with integrated Transmission Fluid Temperature Sensor" -G93-
(flex foil).
Service
To check for incorrect oil temperature sensor reading, perform the following (with engine cold):
-
Connect VAG 1551 Scan Tool.
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Switch ignition ON and start engine.
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Press button -1- to select "Rapid Data Transfer" Mode.
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Press buttons -0- and -2- to enter Address word 02 "Transmission Electronics".
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Press -Q- button to confirm entry.
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Press -> button to advance program.
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Press buttons -0- and -8- to select Function 08 "Read measuring value block".
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Press -Q- button to confirm entry.
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Press buttons -0-, -0- and -5- to select display group number 005 "Read measuring value block".
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Press -Q- button to confirm entry.
-
Road test vehicle.
WARNING!
When road testing a vehicle, ALWAYS use a second Technician to operate the VAG 1551 Scan Tool.
Never place anything between you and the driver or passenger Airbag.
When condition occurs:
-
Check channel 1 "ATF temperature".
^
Normal transmission fluid operating temperature is 110°C - 120°C.
^
At approx. 137°C the TCM goes into "hot running program".