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Home >> Chevrolet >> 1998 >> Corvette 2D Convertible, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Testing - Diagnostic >> DTC B1542: Oil Temperature Circuit (Short To Ground) >> Testing

DTC B1542: Oil Temperature Circuit (Short To Ground): Testing

  1. If IPC diagnostic system check was performed, go to next step. If IPC diagnostic system check was not performed, go to procedures in IPC DIAGNOSTIC SYSTEM CHECK  .
  2. Using scan tool, select IPC data display. Monitor oil temperature data. If scan tool displays a value greater than 374°F (190°C), go to next step. If scan tool does not display a value greater than 374°F (190°C), go to step 7).
  3. Disconnect oil temperature sensor connector. Refer to COMPONENT LOCATIONS  table. Using scan tool, select IPC data display. Monitor oil temperature data. If scan tool displays a value less than 14°F (-10°C), go to step 6). If scan tool does not display a value less than 14°F (-10°C), go to next step.
  4. Using DVOM, check voltage between oil temperature sensor connector (harness side) terminal "B" (Dark Green/White wire) and ground. If reading is 4.5-5.5 volts, go to step 7). If reading is not 4.5-5.5 volts, go to next step.
  5. Check for short to ground in circuit No. 357 (Dark Green/White wire) between IPC terminal A10 and oil temperature sensor terminal "B". If no problem is found, go to step 9). If problem is found, repair as necessary. Go to step 10).
  6. Replace oil temperature sensor. Go to step 10).
  7. Check for intermittent malfunction in DIC switch circuit. See DIAGNOSTIC AIDS. If no problem is found, go to next step. If problem is found, repair as necessary. Go to step 10).
  8. Turn ignition off. Reinstall all components and connectors. Turn ignition on. Clear DTCs. Wait 5 seconds and check for DTCs. If DTC B1542 is current, go to next step. If DTC B1542 is not current, system is operating properly.
  9. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. Go to next step.
  10. Turn ignition off. Reinstall all components and reconnect all connectors. Turn ignition on. Clear DTCs. Perform procedures in IPC DIAGNOSTIC SYSTEM CHECK  .
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