Checking function

• Connect adapter cable, 121-pin V.A.G 1598/31 to engine control module wiring harness and engine control module.
• Reconnect connector on Charge Air Pressure Sensor G31.
• Use adapter cables from Connector Test Set V.A.G 1594C to connect multimeter to sockets 101 (B+) + 108 (Ground (GND)) for voltage measurement.
• Start engine and measure voltage. Specified value: 1.80 to 2.00 V

• Increase engine speed by pressing gas pedal suddenly. Specified value: 2.00 to 3.00 V

If specifications are not obtained:

• Replace Charge Air Pressure Sensor G31.
• Check DTC memory.
• Read readiness code.
• If DTC memory was cleared or engine control module disconnected from voltage supply, readiness code must be regenerated.