Test sequence

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Connect VAG 1551 Scan Tool (VAG 1552) and select "Engine Electronics" address word 01 VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING ENGINE CONTROL MODULE . Engine must be running at idle speed.

Indicated on display

Fig 1: Scan Tool Display - Checking Ignition Timing (Rapid Data Transfer)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.

Indicated on display

Fig 2: Scan Tool Display - Checking Ignition Timing (Read Measuring Value Block3)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Press buttons -0-, -1- and -0- to input display group 010 and press -Q- button to confirm input.

Indicated on display (1-4 Display fields)

Fig 3: Scan Tool Display - Checking Ignition Timing (Read Measuring Value Block 10)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Check measured value in display field 3:
Specification: 0 to 5°;
Check measured value in display field 4:
Specification: 0 to 12° BTDC (max 2.0° deviation from display field 3

If specifications not obtained. See THROTTLE VALVE CONTROL MODULE, CHECKING

If specifications obtained:

Generate readiness code. See READINESS CODE, GENERATING .
Press --> button.
Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.