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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 423 (Engine Control System - DTC) >> DTC P1402: EGR Function >> DTC Confirmation Procedure >> With GST
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With GST

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch ON and select MODE 1 with GST.
  2. Check that engine coolant temperature is within the range of -- 10 to 50°C (14 to 122°F).
  3. Check that voltage between ECM terminal 54 (EGR temperature sensor signal) and ground is less than 4.8V.
  4. Start engine and let it idle for at least 80 seconds.
  5. Stop engine.
  6. Perform steps 1 to 4 again.
  7. Select MODE 3 with GST.
  8. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".
  1. When using GST, DTC Confirmation Procedure should be performed twice as much as when using CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis. Therefore, using CONSULT-II is recommended. 
Fig 1: Check Voltage
G00877591Courtesy of NISSAN MOTOR CO., U.S.A.
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