Test Point 10 - Ignition timing change
TEST POINT 10 - Ignition timing change - Fault code 1_26Possible Causes, Elimination, Remarks
Using the System Tester 9288, the ignition timing change signal may be read 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: terminal 51
Tiptronic control unit plug: terminal 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.