Difference between revisions of "P00AF/000175"

From Ross-Tech Wiki
m (Sebastian1 moved page 000175 to P00AF/000175)
 
(7 intermediate revisions by 2 users not shown)
Line 10: Line 10:
  
 
* Defective N75
 
* Defective N75
 +
* N75 connector plugged into the wrong 2 wire component. Check wiring diagram to confirm
 
* Vacuum leak or low vacuum
 
* Vacuum leak or low vacuum
 
* VNT sticking or seized
 
* VNT sticking or seized
Line 17: Line 18:
  
 
*Verify N75 is working to design, use Output Testing
 
*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
 
*Verify vacuum lines are good, check engine vacuum at idle
 
*Test VNT and G581, apply vacuum to VNT and watch MVB 120.4
 
*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, 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 7.V
+
** 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 ====
 +
 +
* 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:
 +
** 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
 +
*** 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]]

Latest revision as of 07:44, 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