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DTC B0846: Testing

  1. Did you perform the DIAGNOSTIC SYSTEM CHECK - ENGINE ELECTRICAL? If so, go to next step. If not, go to DIAGNOSTIC SYSTEM CHECK - ENGINE ELECTRICAL  .
  2. Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe BATTERY 2 parameter in the SCM data list. Does the scan tool indicate that the Battery 2 parameter is within the specified range of 8.5-16.3V? If so, go to INTERMITTENTS  . If not, go to next step.
  3. Turn OFF the ignition. Disconnect the SCM connector C3. Turn ON the ignition, with the engine OFF. Measure the voltage from the battery 2 positive voltage circuit to a good ground. Is the voltage within the specified range of 8.5-16.3V? If so, go to next step. If not, go to step  5 .
  4. Inspect for poor connections at the harness connector of the SCM and the instrument panel electrical center. Did you find and correct the condition? If so, go to step  7 . If not, go to step  6 .
  5. Repair high resistance in the battery 2 positive voltage circuit. After repair is complete, go to step  7 .
  6. Replace the SCM. After repair is complete, go to next step.
  7. Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Setting the DTC as specified in the supporting text. See CONDITIONS FOR SETTING THE DTC  . Does the DTC reset? If so, go to step  2 . If not, then system is okay.
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