Passat L4-1984cc 2.0L DOHC (9A) (1990)
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Engine Control Module: All Technical Service Bulletins
OBD System - Maintenance Interval Check
MAINTENANCE
SCHEDULES
February 1, 1990
SUBJECT:
PASSAT ON-BOARD DIAGNOSIS SYSTEM
When checking the on-board diagnosis system with VAG 155 during the pre-delivery inspection and scheduled maintenance intervals, the following
procedure is recommended:
^
Connect VAG 1551 and activate rapid data transfer 01
^
Access address codes 01 (Engine Electronics) and 02 (Transmission Electronics) and check fault memories
^
No fault displayed, initiate transmission systems basic setting by accessing code 04
^
Recalibrate system by fully depressing the accelerator pedal to the floor, hold momentarily and release
^
Exit VAG 1551 test procedure and disconnect VAG 1551
^
Fault displayed, repair fault
^
Initiate fault memory cancellation by accessing code 05
^
Initiate transmission systems basic setting by accessing code 04
^
Recalibrate system by fully depressing the accelerator pedal to the floor, hold momentarily and release
^
Disconnect VAG 1551
