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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Controls - Self-Diagnostics - 2.5) >> Diagnostic Tests >> DTC P1490: Vacuum Cut Valve By-Pass Valve >> DTC Confirmation Test

DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction is detected when an improper voltage signal is sent to ECM through vacuum cut valve by-pass valve. Possible causes are:

To set DTC, turn ignition on. Using scan tool, select DATA MONITOR. Wait at least 5 seconds. If first trip DTC is detected, perform DIAGNOSTIC PROCEDURE .

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