GTI L4-2.0L Turbo (BPY) (2007)
If no malfunction is detected in the wiring and if the voltage supply was OK:
Checking electrical circuit
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.
-
Using a multimeter, check the Mass Air Flow (MAF) Sensor G70 electrical harness connector terminal 1 to the Motronic Engine Control Module
(ECM) J623 electrical harness connector T94 terminal 22 for an open circuit.
Mass Air Flow (MAF) Sensor
Motronic Engine Control Module (ECM) J623
G70 electrical harness
electrical connector T94
connector terminals
terminals or test box socket
1
22
Specified value: 1.5 Ohms max.
If the specification was not obtained:
-
Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
-
Check the electrical harness connector for damage, corrosion, lose or broken terminals.
-
If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
-
Replace Mass Air Flow (MAF) Sensor G70.
If no malfunction is detected in the wiring and if the voltage supply was not OK:
-
Replace the Motronic Engine Control Module (ECM) J623.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 03: Interrogating Fault Memory
2. If necessary, erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04: Reset/Delete
Diagnostic Data
3. If the DTC memory was erased, generate readiness code.
-
End of diagnosis.