Section 4 - VAG 1551 Procedure

4. VAG 1551 PROCEDURE

Interrogate DTC memory, observe measuring block values check status of ECM and verify customer complaint.

VAG 1551 SCAN TOOL, CONNECTING

Requirements:

^ Battery voltage OK

^ Fuses 5,17, and 18 OK

^ Digifant system ground wires OK (ground connections: engine, transmission, battery and body)

^ A/C switched OFF

- Remove shift lever cover

- Connect VAG 1551 Scan Tool using VAG 1551/1 adaptor cable as follows:




^ Black connector to black Data Link Connector 1

^ White connector to white Data Link Connector 2

^ Blue Data Link Connector not required

^ The two displays will alternately appear as shown

Note
^ Press the HELP button to obtain additional operating information

^ Press the -> button to step through the program sequence

Refer to Service Information, Volume 1 On Board Diagnostic Troubleshooting, using VAG 1551/VAG 1598 Test Box


4.1 TEST-DRIVE

Start the engine and let idle until engine coolant temperature is >80°C

Temperature can be measured using:
Function 08
Display Group 01
Channel 3







Print Function 08:
Display Groups 00 through 05

Roadtest

Caution:
Two technicians should be used for test-drive. One to monitor and use the VAG 1551 and the other to drive the car.

Drive vehicle for about 5 minutes. Engine rpm must exceed 3000 rpm at least once

Accelerator pedal must be pushed completely down at least once

AFTER ROADTEST

Print Function 08:
Display Groups 00 through 05 while at Idle

Note:
Do not turn engine off until the DTC memory is accessed and a printout is made.

Correct all malfunctions as specified in the Repair Manual