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Home >> Chevrolet >> 2001 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Analog Instrument Panels >> Diagnostic Tests >> DTC B1543: Oil Temperature Circuit Open >> Diagnostic Procedures

Diagnostic Procedures

  1. If IPC diagnostic system check was performed, go to next step. If IPC diagnostic system check was not performed, go to INSTRUMENT PANEL CLUSTER DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing IPC diagnostic system check, go to next step.
  2. Using scan tool, select IPC data display and monitor oil temperature data. If oil temperature is not 14-374°F (-10 to 190°C), go to next step. If oil temperature is 14-374°F (-10 to 190°C), go to DIAGNOSTIC AIDS  .
  3. Turn ignition off. Disconnect oil temperature sensor connector. See Figure . Connect a 3-amp fused jumper wire between oil temperature sensor connector terminals. Monitor oil temperature data. Turn ignition on. If oil temperature is more than 374°F (190°C), go to step  6 . If oil temperature is less than 374°F (190°C), go to next step.
  4. Check for open in Dark Green/White wire between IPC terminal A10 and oil temperature sensor connector terminal "B". See Figure . Repair as necessary. After repairs, go to step  10 . If circuit is okay, go to next step.
  5. Check for open in Black wire between IPC terminal B8 and oil temperature sensor connector terminal "A". Repair as necessary. After repairs, go to step  10 . If circuit is okay, go to step  7 .
  6. Check for poor connections at oil temperature sensor. Repair as necessary. After repairs, go to step  10 . If connections are okay, go to step  8 .
  7. Check for poor connections at IPC connector terminals. Repair as necessary. After repairs, go to step  10 . If connections are okay, go to step  9 .
  8. Replace oil temperature sensor. After repairs, go to step  10 .
  9. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. After repairs, go to next step.
  10. Using scan tool, clear DTCs. Operate vehicle within conditions for setting this DTC in FREEZE FRAME and/or FAILURE RECORDS. Recheck for DTC. If DTC does not reset, system is okay at this time. If DTC resets, go to step  2 .
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