Work sequence Volkswagen Jetta III

Work sequence

1. Connect the VAG 1551/1552 scan tool and with ignition switched on select "Engine Electronics" address word 01: see «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" ADDRESS WORD 01»(ref-203898-S26076375582005110800000) .

Indicated on display

Identifying Scan Tool Display - Function 07 (Rapid Data Transfer). Scheme 387

1. Press buttons -1- and -1- to select "Login-Procedure" function 11 and press -Q- button to confirm input.

Indicated on display

Scheme 388

1. Press buttons -0-, -1-, -2-, -8- and -3- to input log-in code 01283 and press -Q- button to confirm input. (Scheme 388): Identifying Scan Tool Display - Function 07 (Login-Procedure)

Indicated on display

Identifying Scan Tool Display - Function 07 (Rapid Data Transfer). Scheme 389

1. Press buttons -0- and -7- to select "Code Control Module" function 07 and press -Q- button to confirm input.

Indicated on display

Identifying Scan Tool Display - Function 07 (Code Control Module). Scheme 390

1. Enter the appropriate code number for this vehicle and press -Q- button to confirm input. ECM CODING Coding For following vehicles 00000 Golf/GTI/Jetta VR6 with manual transmission 00001 Golf/GTI/Jetta VR6 with automatic transmission

The VAG 1551 scan tool display will show the control module identification; for example

Identifying Scan Tool Display - Function 07 (Sample ECM Coding). Scheme 391

1. Press --> button.

Indicated on display

Identifying Scan Tool Display - Function 07 (Rapid Data Transfer). Scheme 392

1. Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.

Note. The code entered and shown on the display will not be used by the Engine Control Module (ECM) until the ignition has been switched off once. An incorrect coding leads to: Engine running malfunctions Increased fuel consumption Increased emissions Malfunctions stored in Diagnostic Trouble Code (DTC) memory which are not actually present Reduced transmission life

1. Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01. See «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" ADDRESS WORD 01»(ref-203898-S26076375582005110800000) . When doing this the engine must be running at idle speed.

Note. If engine does not start, operate starter for approx. 6 seconds and then do not switch ignition off.

1. Switch printer on with PRINT button (warning lamp in button lights up).

Indicated on display

Identifying Scan Tool Display - Function 02 (Rapid Data Transfer). Scheme 393

1. Press buttons -0- and -2- to select "Check DTC Memory" function 02 and press -Q- button to confirm input.

The number of malfunctions stored or "No DTC recognized" will be shown on the display.

Identifying Scan Tool Display - Function 02 (DTC Recognized). Scheme 394

Note. If something different is indicated on the display: see VAG 1551 scan tool operating instructions

If one or more malfunctions are stored, the malfunctions stored will be displayed and printed out one after the other.

1. Locate and eliminate malfunctions printed out as per Diagnostic Trouble Code (DTC) table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(ref-203898-S02648649932005110800000) .

Note. If no malfunction is stored

1. Press --> button.

Indicated on display

Identifying Scan Tool Display - Function 02 (Rapid Data Transfer). Scheme 395

1. Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
2. Erasing DTC: see «ERASE DTC MEMORY (SCAN TOOL FUNCTION 05)»(ref-203898-S16026993392005110800000) .

1. Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01, see «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" address word 01»(ref-203898-S26076375582005110800000) . When doing this engine must be running at idle speed.

Indicated on display

Identifying Scan Tool Display - Function 05 (1 Of 4). Scheme 396

Scheme 397

1. Press buttons -0- and -2- to select "Check DTC Memory" function 02 and press -Q- button to confirm input.
2. Press --> button until all malfunctions still stored have appeared and the display reads
3. Press buttons -0- and -5- to select "Erase DTC Memory" function 05 and press -Q- button to confirm input. Repair malfunctions as necessary. (Scheme 397): Identifying Scan Tool Display - Function 05 (2 Of 4)

Indicated on display

Identifying Scan Tool Display - Function 05 (3 Of 4). Scheme 398

1. Press --> button.

Indicated on display

Identifying Scan Tool Display - Function 05 (4 Of 4). Scheme 399

1. Allow the engine to idle for at least 1 minute and check DTC memory again.

If no malfunction is displayed

1. Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
2. Road test the vehicle for at least 10 minutes.

1. Connect VAG 1551/1552 scan tool and, with ignition switched on, select "Engine Electronics" address word 01, see «VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING "ENGINE ELECTRONICS" address word 01»(ref-203898-S26076375582005110800000) .

Indicated on display

Identifying Scan Tool Display - Function 15 (1 Of 3). Scheme 400

1. Press buttons -1- and -5- to select "Readiness Code" function 15 and press -Q- button to confirm input. Must appear on display when all diagnosis functions have been successfully completed

Indicated on display

Identifying Scan Tool Display - Function 15 (2 Of 3). Scheme 401

1. press --> button
2. Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.

Indicated on display (possible example)

Identifying Scan Tool Display - Function 15 (3 Of 3). Scheme 402

If one diagnostic checks has not run through successfully

1. Press --> button
2. Create readiness code, see «READINESS CODE, CREATING»(ref-203898-S16756957032005110800000) .
3. Read the readiness code, see «Readiness code, reading (scan tool function 15)»(ref-203898-S24236988642005110800000) . If DTC memory has been erased, repair must be verified via appropriate display group, see «READINESS CODE, CREATING»(ref-203898-S16756957032005110800000) .