2009-08-18_004303_2001_beetle_throttle_body_checking

Throttle Valve Control Module J338, CheckingPage 1 of 9 Volkswagen > New Beetle, New Beetle Convertible > 1998-2008 2.0 Liter 4-Cyl. 2V Generic Scan Tool, Engine Code(s): AEG 24 - Components, Checking . Throttle Valve Control Module J338, Checking Note: Use only gold-plated terminals when servicing terminals in harness connector of Throttle Valve Control Module J338 . Special tools, testers and auxiliary items required Multimeter . Wiring diagram. Test requirements The Motronic Engine Control Module (ECM) J220 fuses OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. Vehicles with automatic transmission, shift selector lever into position "P" or "N" . A/C switched off. Ground (GND) connections between engine/transmission/chassis OK. Throttle valve must not be damaged or dirty. Coolant Temperature at least 80 degree C. Test procedure Perform a Preliminary Check to verify the customers complaint. Refer to Check Start diagnosis Function Preliminary x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08.ebn/vw/a/nb/repair%20man... 8/17/2009 Using the scan tool.0 to 25.0 to 97. Specified value 84. check the throttle valve position (absolute) at Wide Open Throttle (WOT) stop: Diagnostic text Throttle valve position (absolute) Wide Open Throttle (WOT) stop End diagnosis and switch ignition off.. 8/17/2009 . Switch ignition on. It is operated by the Motronic Engine Control Module (ECM) J220 and the Throttle Position (TP) Sensor G69 / Throttle Position (TP) Sensor G88 . Checking Page 2 of 9 Throttle valve operation occurs by an electric motor ( Throttle Position (TP) Actuator V60 ) in the Throttle Valve Control Module J338 .Throttle Valve Control Module J338.ebn/vw/a/nb/repair%20man. Using the scan tool. If the specified values are not obtained: Remove the Throttle Valve Control Module J338 far enough so that the electrical connector terminals are reached.0% Slowly depress the accelerator pedal to the Wide Open Throttle (WOT) stop while observing the percentage display.0% x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. The percentage display must increase uniformly.. The Throttle Valve Control Module J338 is made up of the following components: Throttle Position (TP) Actuator V60 Throttle Position (TP) Sensor G69 Throttle Position (TP) Sensor G88 The Throttle Valve Control Module J338 cannot be serviced separately and must be serviced as a unit. Function test Connect the scan tool. check the throttle valve position (absolute) at idle stop: Diagnostic text Throttle valve position (absolute) Idle stop Specified value 3. arrow -. 8/17/2009 .Throttle Valve Control Module J338.0 to 5. Checking .ebn/vw/a/nb/repair%20man... Checking voltage supply and wiring x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08.0 (at 20 degree C) If the specification was not obtained: Replace the Throttle Valve Control Module J338 . Checking resistance Using a multimeter . Specified value: 1. If the specification was obtained: Check the voltage supply of the Throttle Valve Control Module J338 to the Motronic Engine Control Module (ECM) J220 . Throttle Position Sensor G69 and Throttle Position Sensor G88. check the Throttle Position (TP) Actuator V60 at the Throttle Valve Control Module J338 terminals 1 to 2 for resistance. Checking Page 3 of 9 Disconnect the Throttle Valve Control Module J338 electrical harness connector . 8/17/2009 . Motronic Engine Using a Multimeter . Checking Page 4 of 9 Switch the ignition on. If the specification was not obtained: Checking wiring If the manufacturers test box is being used. Specified value: at least 4. check the Throttle Position (TP) Actuator V60 at Throttle Valve Control Module J338 electrical harness connector terminals to the Motronic Engine Control Module (ECM) J220 electrical harness connector T80 terminals for an open circuit according to the wiring diagram. Refer to Control Module J220. Replacing . If the manufacturers test box is not being used..ebn/vw/a/nb/repair%20man. Using a Multimeter . Remove the Motronic Engine Control Module (ECM) J220 .5 V Switch the ignition off. check the Throttle Position (TP) Actuator V60 at the Throttle Valve Control Module J338 electrical harness connector terminals 4 to 8 for voltage. Perform the following step. Throttle Valve Control Module J338 electrical harness connector terminals 1 2 4 5 6 Motronic Engine Control Module (ECM) J220 electrical connector T80 terminals or test box socket 74 67 75 62 69 x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. Perform the following step.. Install the Adapter F/VAG1598 (68 Pin) VAG1598/22 .Throttle Valve Control Module J338. If the DTC does not return: Repair complete. If no malfunction is detected in the wiring and if the voltage supply was not OK: Replace the Throttle Valve Control Module J338 . Check the electrical harness connector for damage. erase the DTC memory. If the DTC memory was erased. Refer to .Throttle Valve Control Module J338. Check the DTC memory. Refer to Perform a road test to verify repair. Motronic Engine Readiness Code . If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK: Replace the Motronic Engine Control Module (ECM) J220 . Check the wiring for a short circuit to each other. x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08..ebn/vw/a/nb/repair%20man. loose or broken terminals. generate readiness code. Refer to Module J220. Assembly is performed in the reverse of the removal. Refer to . Generate readiness code.Erase DTC Memory . Refer to End diagnosis. or Ground (GND). Refer to Control Module J220. Replacing . 8/17/2009 . Battery (+). 3. corrosion. Final Procedures After the repair work.5 max. Replacing . If necessary. If necessary. Refer to . repair the faulty wiring connection. Motronic Engine Control Diagnostic Mode 04 . End of diagnosis. the following work steps must be performed in the following sequence: 1. 2. Checking Page 5 of 9 7 8 If the specification was not obtained: 59 66 Specified value: 1. Erase the DTC memory.. shift selector lever into position "P" or "N" . Test requirements The Motronic Engine Control Module (ECM) J220 fuses OK. A/C switched off.Throttle Valve Control Module J338. 8/17/2009 . Engine warm. The Fuel Pump (FP) Relay J17 OK. Ignition switched off.. lights and rear window defroster. Ground (GND) connections between engine/transmission/chassis OK. Checking internal resistance Preliminary x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. switched off. Vehicles with automatic transmission. All electrical consumers such as. Checking Note: Use only gold-plated terminals when servicing terminals in the electrical harness connector of Positive Crankcase Ventilation (PCV) Heating Element N79 .ebn/vw/a/nb/repair%20man. Wiring diagram.5 volts.. Special tools. Checking Page 6 of 9 Positive Crankcase Ventilation Heating Element N79. Test procedure Perform a Preliminary Check to verify the customers complaint. Refer to Check Start diagnosis Battery voltage at least 12. testers and auxiliary items required Multimeter . If the specified value was obtained: Checking voltage Switch the ignition on.Throttle Valve Control Module J338. check the Positive Crankcase Ventilation (PCV) Heating Element N79 terminals 1 to 2 for resistance. Checking Page 7 of 9 Disconnect the Positive Crankcase Ventilation (PCV) Heating Element N79 electrical harness connector . Using a multimeter . x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. 8/17/2009 ..ebn/vw/a/nb/repair%20man.2 . 20 degree C) If the specified value was not obtained: Replace the Positive Crankcase Ventilation (PCV) Heating Element N79 . Specified value: 25 to 35 (at approx... check the Positive Crankcase Ventilation (PCV) Heating Element x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. 8/17/2009 .ebn/vw/a/nb/repair%20man. Check the electrical harness connector for damage. corrosion. If the specified value was not obtained: Check the wiring from the Positive Crankcase Ventilation (PCV) Heating Element N79 electrical connector terminal 2 to the Fuse 32 for a short circuit to Ground (GND). loose or broken terminals. If necessary.. Switch the ignition off.. If no malfunctions are found in the wiring: Checking Ground (GND) Using a multimeter . Checking Page 8 of 9 Using a multimeter . or an open circuit. check the Positive Crankcase Ventilation (PCV) Heating Element N79 electrical connector terminal 2 to Ground (GND) for voltage. Specified value: battery voltage.Throttle Valve Control Module J338. repair the wiring connection. ebn/vw/a/nb/repair%20man. 8/17/2009 .. Inc. Check the DTC memory. Motronic Engine x-ebahn:///C:/Program%20Files/eBahn/data/VW-A-NB-FU08. If the specification was not obtained: Check the wiring for a short circuit to each other. If necessary. corrosion. Replacing . Refer to . Generate readiness code. 2. If the DTC does not return: Repair complete. and Bentley Publishers. Refer to .Erase DTC Memory Readiness Code . Final Procedures After the repair work. repair the faulty wiring connection. If necessary. erase the DTC memory. Specified value: 1. End of diagnosis.5 Max. Refer to Control Module J220.. Last processed: Diagnostic Mode 04 . 3. loose or broken terminals. or Ground (GND). Check the electrical harness connector for damage. Copyright © 2008 Volkswagen of America. the following work steps must be performed in the following sequence: 1. Refer to . Refer to End diagnosis. If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK: Replace the Motronic Engine Control Module (ECM) J220 .Throttle Valve Control Module J338. If the DTC memory was erased. All rights reserved. Battery (+). Refer to Perform a road test to verify repair. Erase the DTC memory. Checking Page 9 of 9 N79 electrical connector terminal 1 to Ground (GND) for resistance. If no malfunction is detected in the wiring: Replace the Positive Crankcase Ventilation (PCV) Heating Element N79 . generate readiness code.