Meter Output Check

WARNING: This page is about a different car, the 1985 Nissan Maxima and 1985 Nissan 200SX. However, it is still accessible from the selected car via links, so may be relevant.

Combination meter emits speed sensor signal to control E.F.I. control unit, A.S.C.D. control unit, voice warning unit, drive computer and lock-up control unit.

Fig 1: Speed Sensor Harness Connector

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

Remove combination meter with harness installed. Disconnect speedometer cable from speed sensor. Remove speed sensor with harness installed. Connect voltmeter between terminal No. 9 (+) and No. 15 (-). See Fig 1 . Turn ignition switch to "ON" position. Using screwdriver, slowly turn speed sensor rotor shaft so voltmeter needle deflects twice for each revolution.
Even if speedometer is operating normally, the combination meter control unit should be replaced if meter output check is not okay. If speedometer does not operate, See SPEEDOMETER TESTING.