All Models with Analog Gauges

Turn ignition off. Disconnect speedometer cable from transmission. On all models connect an ohmmeter between terminals No. 5 and 10 from harness side of speed sensor connector. On 200SX and 300ZX models only, turn ignition on. Slowly rotate speedometer cable pinion by hand to ensure deflection of ohmmeter. Ohmmeter should deflect twice per rotation of speedometer pinion.