Checking wires to Engine Control Module (ECM)

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

Fig 1: Engine Control Module 3-Pin Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Check wires between test box and 3-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ω

• Also check wires for short circuit to each other.

Specified value: ∞ Ω

If no malfunctions are found in wires:

• Replace the respective knock sensor:

• Knock Sensor (KS) 1 -G61-. Refer to Parts of the ignition (vehicles with engine code AFP), removing and installing  , item 15
• Knock Sensor (KS) 2 -G66-. Refer to Parts of the ignition (vehicles with engine code AFP), removing and installing  , item 11

• 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