Diagnostic Procedure
- Turn ignition off. Disconnect EGR temperature sensor harness connector. See Fig 1
. Turn ignition on. Measure voltage between ground and EGR temperature sensor harness connector terminal No. 1 (Green/Orange wire). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short between EGR temperature sensor and ECM.
- Turn ignition off. Check continuity between engine ground and EGR temperature sensor harness connector terminal No. 2 (Black/White wire). Continuity should exist. Also, check circuit for short to voltage. If problem is found, repair as necessary. If problem is not found, go to next step.
- Measure resistance between EGR temperature sensor terminals, with water at specified temperatures. See EGR TEMPERATURE SENSOR RESISTANCE
table under DIAGNOSTIC PROCEDURE under DTC P0400: EGR FUNCTION (2.4L). If resistance is as specified, go to next step. If resistance is not as specified, replace EGR temperature sensor.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS
in TROUBLE SHOOTING - NO CODES article.
Courtesy of NISSAN MOTOR CO., U.S.A.