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Display Inaccurate

  1. Remove connector from oil pressure sending unit. Connect one lead of Instrument Panel Tester (J-33431) to circuit No. 31 (Tan wire), and other lead to ground. Set resistance dial to 90 ohms and then to zero ohms.
  2. Display should indicate high pressure and then low pressure. Check for beep when second bar goes out. If display functions properly, replace oil pressure sending unit. If display does not function properly, check circuit No. 31 (Tan wire). If satisfactory, replace instrument cluster.
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