volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5181 > < With Manufacturer's Scan Tool|Page 5179
Page 9
background image

The code number is compiled as shown in the following example: 

ECM Voltage Supply Open Circuit, Followup Procedure

Procedure After Interruption of Voltage Supply

If voltage supply has been interrupted, Engine Control Module (ECM) forgets all adaptation and basic setting values and erases the readiness code.
Depending on vehicle's mileage, this can cause substantial problems with running characteristics.

Special tools and equipment

-

V.A.G 1551 Scan Tool (or VAG 1552 mobile scan tool) with VAG 1551/3B cable

Procedure

Perform the following steps after an interruption in the voltage supply.

-

Switch ignition on for at least 10 seconds.

-

Switch ignition off.

Vehicles with automatic transmission:

-

Adapt kick-down shift point.

Continuation for all vehicles

-

Re-generate readiness code.

-

Perform idle test.

-

Perform a longer road test, until problems with running characteristics are eliminated.

With Manufacturer's Scan Tool|Page 5181 > < With Manufacturer's Scan Tool|Page 5179