Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN1999GTI (1W1) V6-2.8L (AAA)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL TESTING (FUNCTIONS)FUNCTION 02-CHECK DTC MEMORY
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)
Function 02-Check DTC Memory
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)SECTION Function 02-Check DTC Memory
Checking Diagnostic Trouble Code (DTC) Memory
NOTE: For scan tool connection instructions refer to Connecting and Selecting Function under Scan Tool Operation.
- Indicated on display:
Rapid data transfer HELP
Select function XX
1. Press buttons -0- and -2- to select the "Check DTC Memory" function 02.
- Indicated on display:
Rapid data transfer Q
02-Check DTC Memory
2. Press -Q- button to confirm input.
IF DTC's ARE PRESENT
- Indicated on display:
X DTC recognized
NOTE: Where X equals the number of stored diagnostic trouble codes (DTC's).
IF No DTC's ARE PRESENT
- Indicated on display:
No DTC recognized
3. Press right ARROW button.
^ If DTC's were stored they will be displayed or printed.
- When all DTC's have been printed or displayed, press the right ARROW button to return to select function mode, refer to function 01-Connecting VAG 1551 and Selecting Functions.
NOTE: If a DTC was recognized:
a. Repair malfunction.
b. Check DTC memory.
c. Erase DTC memory.
d. Test drive.
e. Re-check DTC memory
^ If "No DTC Recognized" was displayed scan tool returns to select function mode, refer to Connecting VAG1551 and Selecting Functions.
5. Press buttons -0- and -6- to select "End Output" function 06.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.