ECO mode AUDI A4 1998 B5 / 1.G 01V Transmission OBD Functions Workshop Manual

01-4

- The Multi-function Indicator Light (MIL) lights up
after 2 driving cycles (Dcy); check DTC memory
( page 01
-43
and compare with DTC table
page 01
-45
).
If the TCM -J217- malfunctions (e.g. if the power
supply is faulty or the connector becomes
disconnected), the transmission will immediately
switch to "mechanical back-up mode with
inactive control module" and continue to
operate.

Mechanical backup with non-active control
module

- The transmission shifts out of all forward gears
into hydraulic 4th gear. The torque converter
clutch is unlocked (not applied). All solenoid
valves are de-energized.

- Maximum shift pressure is applied to the power-
transmitting elements.

- Reverse gear can be engaged. The shift lock
solenoid is active (in "P" and "N").

- All of the segments transmission range selector lever display are dark.
-
The MIL lights up when the Engine Control Module (ECM) has
recognized a CAN-bus malfunction (missing data exchange between
engine and transmission control modules) (after 2 Dcy); check DTC
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01-10

Mode
Function
8
Not applicable
9 This mode only applies as of model year 2000. The first value indicates the Part No. and the program or data status of the Transmission Control Module (TCM).The second value indicates a checking summation, for instance A357. This value is calculated internally and
can be disregarded.
Note:
There is no further detailed information about OBD in this section.
Pa
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gnostic
(OBD
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play?action=Goto&t
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e=re
pair&id=AUDI.B5.AT02.01.1