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Odometer Will Not Operate

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.
  1. Check to see if speedometer is operating correctly. If its not, perform speedometer trouble shooting. See SPEEDOMETER  in this article. If speedometer operation is normal, proceed to step 2).
  2. Turn ignition switch to "OFF" position. Remove instrument cluster. Disconnect only the wire harness connector from control unit. Leave harness connected to power unit. Connect test jumper lead. See Fig 1 . Turn ignition switch to "ON" position. Measure voltage at harness to odometer unit.
  3. Perform the following measurements: Green (+) to Red (-), Green (+) to White (-), Green (+) to Blue (-) and Green (+) to Yellow (-).
    Fig 1: Checking Odometer Diagnostic Jumper and Test Harness are shown. Courtesy of Nissan Motor Co., U.S.A.
    G29704
  4. All readings should pulsate between 0 (zero) and 4 volts. If not, perform POWER UNIT CHECK  . To check power unit output to odometer, measure voltage between terminal VCC (Red) and GND (Black). If results are not okay, replace power unit. If results are okay, replace control unit.
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