1. ODX at Volkswagen and Audi Differences KWP versus UDS

2. ODX describes all diagnostic data,
ODX Begriffserklärung
What sigifies „ODX“?
ODX = Open Diagnostic data eXchange (ASAM/ISO-Standard)
ODX describes all diagnostic data,
which is necessary for the data exchange between (VAS) testequipment and the ECUs in the car.

3. commutability through standardized interfaces
Motivation for the introduction of ODX
What is changing in the ECU and the tester
with KWP 2000 light plus
with ISO TP / UDS / ODX:
Application
Calculation
ISO-API
commutability through standardized interfaces
Sensors
Actuators
raugh values
Application
VW / Audi-specific
Calculation
raugh values
Sensors
Actuators

4. actual: missing information
Comparison KWP 2000 versus UDS / ODX
Visualisation of the function „read measure values“
old ?
actual: missing information ?

5. with description and scale unit
Comparison KWP 2000 versus UDS / ODX
Visualisation of the function „read measure values“
new
new ECU with ISO UDS/ ODX
with description and scale unit
… with ISO UDS/ ODX
any selection

6. Motor for central locking indicator(in the mirror)
Comparison KWP 2000 versus UDS / ODX
Actuator test with KWP2000
Complicated statemachine in the ECU
Activate actuator test
Ilumination
ECU response:
fix measure valueblock
Motor for central locking
leaving home lights
lower window lifter
mirrorfunction
VAG-Codes.xls
indicator(in the mirror)
run up
window lifter
85% Ein Aus Inaktiv

7. Indicator (in the mirror) Motor for central locking
Comparison KWP 2000 versus UDS / ODX
Actuator test with UDS / ODX
Indicator (in the mirror)
mirrorfunction
Motor for central locking
Ilumination
run up
window lifter
lower window lifter
leaving home lights
activate
actuator
ECU response:
Measure values
statemachine in the tester

8. Comparison KWP 2000 versus UDS / ODX
Visualisation of the function– „selectiv actuator test“
… with UDS / ODX
KWP2000
actual: no function- input possible!

9. Comparison KWP 2000 versus UDS / ODX
Visualisation of the function - Coding
new
old
actual: what is coded?
.. with ISO UDS/ ODX plaintext