TT Coupe L4-2.0L Turbo (BPY) (2008)
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Electronic Throttle Control Module: Testing and Inspection
Engine Control Module (ECM) (J623) Voltage Supply, checking
Engine Control Module (ECM) (J623) Voltage Supply, checking
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› wiring diagrams.
Test requirements
‹› Fuse (SA4) OK.
‹› Fuse (SB9) OK.
‹› Fuse (SC1) OK.
‹› Fuse (SC31) OK.
‹› Fuse (SC36) OK.
‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.
‹› Power Supply Relay (terminal 50) (J682) OK.
‹› The Ground (GND) connections at the engine and transmission OK.
‹› The battery voltage at least 12.5 V.
‹› The generator OK.
Start diagnosis
If the manufacturers test box is being used. Perform the following step.
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Install the test box. Refer to 2.0 Liter 4-Cyl. 4V Turbo Fuel Injection & Ignition, Engine Code(s): BWA. Repair Group 24.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Engine Control Module (ECM) (J623). Refer to => [ replacing ] See: Engine Control Module/Testing and Inspection/Engine Control
Module (ECM) (J623).
Checking voltage supply
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Using a Multimeter, check the following wiring connection for voltage.
Specified value: 12.5 V
If the specified value was not obtained:
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Using a Multimeter, check the Engine Control Module (ECM) (J623) electrical harness connector terminal to the Battery (A) (+) for an open
circuit or short to Ground (GND).
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Check the electrical harness connectors for damage, corrosion, loose or broken terminals.
-
If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
