Test Point 10 - Ignition timing change

TEST POINT 10 - Ignition timing change - Fault code 1_26

Possible Causes, Elimination, Remarks

Using the System Tester 9288, the ignition timing change signal may
be modified directly in the Input signals menu item.
On Tiptronic vehicles, ignition is retarded when a gear change is
made. When the Ignition timing change fault message occurs, check
wiring continuity between Digital Motor Electronics (DME) plug and Tiptronic connector. DME control unit plug: Pin 51, Tiptronic control unit plug: Pin 32.

CAUTION: Observe connection between plugs.

This fault causes the Tiptronic to operate in emergency mode. For the test to be valid, a test drive is required since the signal is only displayed for a very short time.