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Tachometer Inoperative

WARNING: This page is about a different car, the 1995 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. With engine running, check for a tachometer signal at PCM pin No. 43. Refer to TACHOMETER CALIBRATION  in this article. Also, see Fig 2 . If signal is according to specification, go to next step. If signal is not according to specification, replace PCM.
    Fig 1: Identifying Vehicle Speed Sensor Connector
    G95F26828Courtesy of CHRYSLER CORP.
    Fig 2: Identifying PCM Connector
    G95G26829Courtesy of CHRYSLER CORP.
  2. Disconnect negative battery cable. Unplug PCM connector. Remove instrument cluster bezel and cluster assembly. Disconnect instrument cluster connector "A".
  3. Probe cavity A6 of cluster connector "A". Check for continuity to ground. If there is no continuity, go to the next step. If there is continuity, repair short circuit as required.
  4. Still probing cavity A6 of cluster connector "A", check for continuity to cavity No. 43 of PCM connector. If there is continuity, replace tachometer. If there is no continuity, repair open circuit as required.
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