Automatic Transmission Testing and Inspection for TT Roadster L4-20L Turbo (BWA)
/Page-571003.png)
Specified value: 1.5 ohms.
If the specified value was not obtained:
-
Check the Engine Control Module (ECM) (J623) electrical harness connector terminals T94/3, T94/5, T94/6 to the Motronic Engine Control
Module (ECM) Power Supply Relay (J271 ) socket 2/87 for an open circuit or a short to Ground (GND).
-
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-
If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking Ground (GND)
-
Using a Multimeter, check the following wiring connections for an open circuit.
Specified value: 1.5 ohms.
If any of the specified values are not obtained:
-
Check the Engine Control Module (ECM) (J623) electrical harness connector terminals to the following Ground (GND) locations for an open
circuit or a short to Battery (+).
-
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-
If necessary, repair the wiring connection.
If no malfunctions are found in the wiring and the voltage supply was OK:
-
Perform a road test to verify any electrical repairs.
If the fault does not return:
Repair complete, Generate readiness code. Refer to => [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes.
-
End diagnosis.
If the fault does return and no malfunction is detected in the wiring and the voltage supply was OK:
-
Replace the Engine Control Module (ECM) (J623 ). Refer to => [ replacing ] See: Engine Control Module (ECM) (J623).
-
Assembly is performed in the reverse of the removal.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] See: Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 03 - Read DTC Memory.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing
