Test point

Ignition timing change Using the System Tester 9288, the ignition timing change signal may Fault code 1 26 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 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.

Fault, Fault Code

Possible Causes, Elimination, Remarks

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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