A8L V8-4.2L (BFM) (2004)
-
Connect multimeter to terminal 2 of connector and engine Ground (GND) for voltage measurement.
-
Operate starter briefly (engine can also start briefly).
Specified value: approx. battery voltage
-
If specified value is not reached, check wire connection from terminal 2 of connector to Fuel Pump (FP) relay via fuse for open circuit and short
circuit to Ground (GND), repair wire connection if necessary.
-
Connect multimeter to terminal 2 and terminal 3 of connector for voltage measurement.
-
Operate starter briefly.
Specified value: approx. battery voltage
NOTE: Ground (GND) from the ECM is present at terminal 3 of connector.
If specified value is not obtained, check wire connections.
-
Connect multimeter to terminal 3 and terminal 4 of connector for voltage measurement.
-
Switch ignition on.
Specified value: approx. 5 Volts.
Check wire connections for Mass Air Flow (MAF) sensor
NOTE: Signal wire is also checked during wire test.