Difference between revisions of "P00AF/000175"

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*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" of merc, 120.4 should read 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 7.V
 
** 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

Revision as of 11:14, 14 June 2011

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
  • Vacuum leak or low vacuum
  • VNT sticking or seized
  • G581 sensor

Possible Solutions

  • Verify N75 is working to design, use Output Testing
  • 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 7.V
    • If 120.4 voltage doesn't alter, VNT may be seized or G581 failed