Connect scan tool. See RETRIEVING DIAGNOSTIC TROUBLE CODES . Turn ignition on. If using other
than Scan Tool (VAG 1551/1552 or VAS 5051/5052), follow scan tool manufacturer's instructions. Using Scan
Tool (VAG 1551/1552 or VAS 5051/5052), select address word 19, select function 7, enter 00006 (ABS
activated 00002 + Airbag activated 00004 = 00006).
THROTTLE VALVE CONTROL MODULE (J338)
Adapting Throttle Valve Control Module (J338) To ECM (J220)
TVCM (J338) adaptation must be performed when voltage supply to TVCM (J338) or ECM is lost. TVCM
(J338) adaptation occurs:
z
Automatically if ignition is switched on for 10 seconds or more, without operating accelerator pedal or
starter and ECM recognizes a need for adaptation. No notification that adaptation was successful will be
given when this happens.
z
When initiated through diagnostic function 04 - BASIC SETTING in display group 60, (VAG 1551/1552
or VAS 5051/5052). See step 1 under Adapting Throttle Valve Control Module (Scan Tool VAG
1551/1552 Or VAS 5051/5052). If using generic scan tool, follow scan tool manufacturer's instructions.
Adapting Throttle Valve Control Module (Generic Scan Tool)
If possible it is best to warm-up vehicle by test driving. Connect scan tool to DLC. DLC is located at left side of
steering column. See Fig. 1 . Follow scan tool manufacturer's instructions and adapt throttle valve control
module to ECM.
Adapting Throttle Valve Control Module (Scan Tool VAG 1551/1552 Or VAS 5051/5052)
NOTE:
Throttle Valve Control Module (TVCM - J338) teaches ECM various positions of
throttle valve when ignition is on and engine is not running. Throttle positions
are stored in the ECM. Throttle position is communicated to ECM through two
angle sensors, Angle sensor 1 for throttle valve drive (G187) and Angle sensor 2
for throttle valve drive (G188), sensors are integral parts of the TVCM (J338).
Manufacturer recommends use of Scan Tool VAG 1551/1552 or VAS 5051/5052.
NOTE:
When adaptation of throttle valve control module is necessary and vehicle is
equipped with A/T, the transmission control module must also be adapted.
Perform adaptation of A/T to its Basic Setting. See A/T BASIC SETTING .
NOTE:
Engine will not start during automatic adaptation. Ignition must remain on
(engine off) for entire adaptation procedure. Ensure coolant temperature and
intake air temperature are between 41-194°F (5-90°C). ECM will abort adaptation
if; throttle valve cannot be closed completely (e.g. dirty throttle body, distorted
throttle body or lose throttle body bolts), battery voltage is too low, engine is
started or accelerator pedal is pressed during adaptation. If TVCM does not
adapt to ECM, wiring to TVCM or TVCM may be at fault. Check for DTCs. See
DIAGNOSTIC TROUBLE CODE IDENTIFICATION . Repair as necessary.
2003 Volkswagen New Beetle GLS
2002-2003 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo
Helpmelearn Repair Manuals
Wednesday, December 14, 2005 8:44:28 AM
Page 26
© 2004 Mitchell Repair Information Company, LLC.