display AUDI A8 2001 D2 / 1.G 01V Transmission OBD Functions Workshop Manual

01-2
If a malfunction is no longer present after a
certain time or a long drive, it will be converted to
a sporadic (SP) DTC.
A malfunction will also be converted to sporadic
when the DTC memory is not erased after
repairs.
Malfunctions which are stored in the memory as
sporadic malfunctions, will be displayed as
"sporadic DTCs" when checked by the scan tool
V.A.G 1551. In such cases "SP" appears on the
right of the display. If the printer is switched on,
the print-out will show "sporadic DTC" after the
identification of the malfunction.
If the sporadic DTC does not occur again after 40
cold engine starts and subsequent transmission
warm-up, the malfunction in DTC memory will be
automatically erased.
The possibilities offered by On Board Diagnostic
can only be used with the Vehicle Diagnostic,
Testing and Information System VAS 5051 or the
V.A.G 1551 scan tool (mode 1, rapid data
transfer).
Available functions of Vehicle Diagnostic, Testing
and Information System VAS 5051 or the
V.A.G1551 scan tool page 01
-42
.
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solenoid is active (in "P" and "N").

- All segments of the transmission range selector lever display light up.
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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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gnostic
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play?action=Goto&t
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