Engine Controls - Pin Voltage Charts: Introduction

NOTE: For pin voltage charts on I30, refer to Maxima in Nissan PIN VOLTAGE CHARTS article. For pin voltage charts on QX4, refer to Pathfinder in Nissan PIN VOLTAGE CHARTS article.

Pin voltage charts are supplied to reduce diagnostic time. Checking pin voltages at the Engine Control Module (ECM) determines whether it is receiving and transmitting proper voltage signals. Charts may also help determine if ECM harness is open or shorted.

NOTE: Harness connector should remain plugged in during testing procedures. Harness side of connectors are shown in ECM harness connector illustrations. See Fig 1 or Fig 2 .

Fig 1: Identifying ECM Harness Connector Terminals (G20)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying ECM Harness Connector Terminals (Q45)

Courtesy of NISSAN MOTOR CO., U.S.A.