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Tachometer Inoperative

  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 12 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. Push trip reset button until DTC 11 is reached. Start engine and drive vehicle. If LCD indicates ON, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If LCD does not indicate ON, go to next step.
  3. Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Turn ignition switch to ON position. Measure voltage between ground and instrument cluster harness connector No. 2 terminal 2L. If battery voltage is present, go to next step. If battery voltage is not present, go to step 5).
  4. Disconnect Instrument Cluster connector. Check for continuity between instrument cluster connector No. 2 terminal 2L and Instrument Cluster connector terminal 4C. See Figure . If continuity exists, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If continuity does not exist, replace Instrument Cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
  5. Remove rear console. Connect Jumper Box (49 UN01 130) to PCM connector. Turn ignition switch to ON position. Measure voltage between ground, and PCM terminal No. 48 at jumper box. If voltage is more than 10 volts, repair wiring between PCM and instrument cluster. See WIRING DIAGRAMS. If voltage is 10 volts or less, go to next step.
  6. Check for engine DTCs. See TESTS W/CODES article in ENGINE PERFORMANCE section. If DTC P0320 is present, perform diagnosis for that DTC. If DTC P0320 is not present, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
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