P00AF/000175: Difference between revisions
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Table Of Contents
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1.
000175/P00AF - Actuator Module for Turbocharger 1: Stuck
- 1.1.1 Possible Symptoms
- 1.2.1 Possible Causes
- 1.3.1 Possible Solutions
- 1.4.1 Special Notes
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** Engine off, no vacuum 120.4 should read about 3.5V | ** Engine off, no vacuum 120.4 should read about 3.5V | ||
** Engine Off, apply 17 Inches of mercury, 120.4 should drop to about .7V | ** Engine Off, apply 17 Inches of mercury, 120.4 should drop to about .7V | ||
** Engine at idle, 120.4 should read about | ** Engine at idle, 120.4 should read about .7V | ||
** If 120.4 voltage doesn't alter, VNT may be seized or G581 failed | ** If 120.4 voltage doesn't alter, VNT may be seized or G581 failed | ||
==== Special Notes ==== | ==== Special Notes ==== | ||
* On some TDI engines, the Vacuum Diaphragm/G581 unit can be purchased as a separate part from dealer. | * On some '''TDI''' engines, the Vacuum Diaphragm/G581 unit can be purchased as a separate part from dealer. | ||
* [[2.0L CR TDI]] owners may find the following threads helpful: | * '''[[2.0L CR TDI]]''' owners may find the following threads helpful: | ||
** http://forums.ross-tech.com/showthread.php?404-009571-Turbocharger-Boost-Control-Position-Sensor-Circuit-P2563 | ** http://forums.ross-tech.com/showthread.php?404-009571-Turbocharger-Boost-Control-Position-Sensor-Circuit-P2563 | ||
** http://forums.ross-tech.com/showthread.php?4891-2009-TDi-Having-issues-with-Turbo-seeking-some-advise | ** http://forums.ross-tech.com/showthread.php?4891-2009-TDi-Having-issues-with-Turbo-seeking-some-advise | ||
*** Post #10 includes a YouTube video link. | *** Post #10 includes a YouTube video link. | ||
* When found in '''Gasoline''' engines such as the CHHB (or similar EA888 engines) this thread may be helpful: [https://forums.ross-tech.com/showthread.php?19866-Case-Study-15202-Actuator-Module-for-Turbocharger-1-P00AF-00-109-Stuck Case Study: 15202 - Actuator Module for Turbocharger 1 P00AF 00] | |||
__FORCETOC__ | __FORCETOC__ | ||
[[Category:Fault Codes]] | [[Category:Fault Codes]] | ||
Revision as of 12:44, 28 April 2022
000175/P00AF - Actuator Module for Turbocharger 1: Stuck
Possible Symptoms
- Malfunction Indicator Light (MIL) ON
- Glow Plug light flashing
- Reduced engine performance
Possible Causes
- Defective N75
- N75 connector plugged into the wrong 2 wire component. Check wiring diagram to confirm
- Vacuum leak or low vacuum
- VNT sticking or seized
- G581 sensor
Possible Solutions
- Verify N75 is working to design, use Output Testing
- Verify the N75 connector plugged into N75 per the factory level wiring diagram rather than any other component that may not set a fault code such as N79 (Positive Crankcase Ventilation (PCV) heating element)
- Verify vacuum lines are good, check engine vacuum at idle
- Test VNT and G581, apply vacuum to VNT and watch MVB 120.4
- Engine off, no vacuum 120.4 should read about 3.5V
- Engine Off, apply 17 Inches of mercury, 120.4 should drop to about .7V
- Engine at idle, 120.4 should read about .7V
- If 120.4 voltage doesn't alter, VNT may be seized or G581 failed
Special Notes
- On some TDI engines, the Vacuum Diaphragm/G581 unit can be purchased as a separate part from dealer.
- 2.0L CR TDI owners may find the following threads helpful:
- When found in Gasoline engines such as the CHHB (or similar EA888 engines) this thread may be helpful: Case Study: 15202 - Actuator Module for Turbocharger 1 P00AF 00