Work sequence

• Connect V.A.G 1551/1552 (Connecting scan tool and selecting engine electronics control module → Scan Tool V.A.G 1551 , connecting  .)
• Run engine at idle speed and press buttons - 0  - and - 1  - to select "Engine electronics" address word 01.

Indicated on display

• Press buttons - 0  - and - 8  - to select "Read measured value block" function 08 and confirm entry with - Q  - button.

Indicated on display

• Press buttons - 0  - , - 0  - and - 6  - to select "Display group number 6" and confirm entry with - Q  - button.
• Observe display in display field 2.

• Specification: 0 x x

• Operate clutch pedal. The left-hand position must change to 1.

• Specification: 1 x x

• Press → button.
• Press buttons - 0  - and - 6  - to select "End output" function 06 and confirm entry with - Q  - button.
• Switch ignition off.

If specifications are not obtained:

• Disconnect 2-pin connector from clutch pedal switch.

Fig 1: Measuring Resistance At Switch Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Measure resistance at switch terminals.

• Specification: Clutch not depressed: max. 10 Ω; Clutch depressed: ∞ Ω

If specifications are not obtained:

• Replace clutch pedal switch.
• Check DTC memory and, if necessary, repair any malfunctions and then erase → Diagnostic Trouble Code (DTC) memory, checking and erasing  .
• Read readiness code → Readiness code, displaying  .

If DTC memory has been erased, the readiness code must be generated again → Readiness code, setting  .

If specifications are obtained:

• Remove wiper arms and plenum cover. →92 WINDSHIELD WIPER & WASHER SYSTEM

Fig 2: Identifying Test Box V.A.G 1598/22 Connected To Control Module Wiring Harness

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Connect test box V.A.G 1598/22 (through my 1999) or test box V.A.G 1598/31 (from my 2000) to control module wiring harness.

Fig 3: 2-Pin Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Check wiring between test box and connector for open circuit according to wiring diagram.

• Wire resistance: max. 1.5 Ω

• Additionally check wires for short to one another, to vehicle Ground and to battery positive (B+).

• Specification: ∞ Ω

• If wiring and the resistance measurement values are OK, replace engine control module → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing  .