Touareg V8-4.2L (BAR) (2007)
-
Start the engine and let it run at idle.
-
Using a multimeter, check the Mass Air Flow (MAF) Sensor (G70) electrical harness connector terminal 3 to engine Ground (GND).
Specified value: battery voltage.
-
Switch the ignition off.
If specified value was not obtained:
-
Check the Mass Air Flow (MAF) Sensor (G70) electrical harness connector terminal 2 to the Fuel Pump (FP) Control Module (J538) terminal 2
for an open circuit.
Specified value: 1.5 ohms max.
If no malfunction is detected in the wiring and if the voltage supply was OK:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
-
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
-
Remove the Motronic Engine Control Module (ECM) (J623). Refer to --> [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.