Check wires to control module

• Connect test box to control module wiring harness. Refer to Test box, connecting for wiring test

Vehicles with engine code AFP 

Fig 1: 2-Pin Electrical Harness Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Check wire between test box socket 44 + 2-pin connector terminal 2 for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ω

Vehicles with engine codes BDF and BJS 

Fig 2: 2-Pin Electrical Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Check wire between test box socket 44 + 2-pin connector terminal 2 for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ω

Continuation for all vehicles 

• Also check the wire for short circuit to B+ and Ground (GND).

Specified value: ∞ Ω

• Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ω

• Erase DTC memory of Engine Control Module (ECM). Refer to Diagnostic mode 4: Reset/erase diagnostic data
• Generate readiness code. Refer to Readiness code, generating

If no malfunctions are found in wires:

• Replace Motronic Engine Control Module (ECM) -J220-. Refer to Engine Control Module (ECM), replacing  .