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Test No. 5: Tachometer Needle Fluctuates Or Is Incorrect

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure ignition switch is in LOCK position. Disconnect negative battery cable. After more than 30 seconds, reconnect negative battery cable. Cycle ignition switch to ON position, then LOCK position, 3 times. Turn ignition switch to ON position. Push trip reset button 3 times. Push trip reset button until DTC 13 is reached. If tachometer needle moves full scale and then rests at 3000 RPM, go to next step. If tachometer needle does not move full scale and then rest at 3000 RPM, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
  2. Check for engine DTCs. See SELF-DIAGNOSTICS - 626 - 2.0L or SELF-DIAGNOSTICS - 626 - 2.5L in ENGINE PERFORMANCE. If DTC P0320 exists, perform diagnosis for that DTC. If DTC P0320 does not exist, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
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