System Testing: Tachometer: Loyale

If tachometer needle deflects beyond maximum point, will not return to zero, or will not exceed a certain point, replace tachometer. For all other conditions, check fuse. If fuse is okay, check instrument cluster power and ground circuits (if temperature gauge operates, instrument cluster power and ground circuits are okay).
If power and ground circuits are okay, check continuity between ignition coil negative (-) terminal and instrument cluster. If continuity exists, replace tachometer.