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Home >> Chevrolet >> 1998 >> Corvette 2D Convertible, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Testing - Diagnostic >> DTC B1543: Oil Temperature Circuit (Open) >> Diagnostic Aids

Diagnostic Aids

  1. The following conditions may cause an intermittent: Intermittent open or high resistance in oil temperature circuit No. 357 (Dark Green/White wire) or No. 470 (Black wire), or an internal open in oil temperature sensor. If oil temperature sensor or related wiring is open, IPC will display oil temperature as LOW.
  2. To verify if IPC can recognize a change in resistance from oil temperature sensor, ground circuit No. 357 (Dark Green/White wire). If IPC displays oil temperature as 392°F (200°C), circuit No. 357 and IPC are operating properly. Check oil temperature sensor and ground circuit.
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