Tiguan 4Motion (5N1) L4-2.0L Turbo (CCTA) (2009)
Catalytic Converter: Testing and Inspection
Diagnostic Procedures
Three Way Catalytic Converter, TWC Checking
Test requirements
‹› Battery voltage at least 12.5 volts.
‹› Oxygen Sensors OK.
‹› No leaks or damage to exhaust system.
Function test
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Perform the function test in Diagnostic Mode 06. Refer to => [ Diagnostic Mode 06 - Read Test Results for Specific Diagnostic Functions ] See:
Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
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Switch the ignition off.
If the specified values are exceeded:
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Check the exhaust system for leaks.
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If necessary, repair the leak in the exhaust system.
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Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
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Perform a road test to verify Repair.
If the DTC does Not return:
Repair complete, Generate readiness code. Refer to => [ Readiness Code ] See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.
If no leaks are found in the exhaust system:
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Replace the catalytic converter with front exhaust pipe.
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: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.