TT Quattro Coupe V6-3.2L (BHE) (2005)
If the specification was not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box VAG1598/31.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) J220.
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Using a Multimeter, check the Throttle Drive (for Electronic Power Control (EPC)) G186 at Throttle Valve Control Module J338 electrical
harness connector terminals to the Motronic Engine Control Module (ECM) J220 electrical harness connector terminals for resistance.
Throttle Valve Control Module
Motronic Engine Control Module (ECM)
J338 electrical harness
J220 electrical harness connector
connector terminals
terminals or test box sockets
1
92
2
83
3
117
4
84
5
118
6
91
Specified value: 1.5 Ohms max.
If the specification is not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
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If necessary, repair the faulty wiring connection.
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If no malfunction is detected in the wiring and if the voltage supply was not OK:
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Erase the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and
Diagnostic Overview/Readiness Code
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End diagnosis.
If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:
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Replace the Motronic Engine Control Module (ECM) J220.
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Assembly is performed in the reverse of the removal.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code.