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DTC B1327: 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 the ELECTRONIC BATTERY FD parameter in the BCM data list. Does the scan tool indicate the battery voltage is greater than the specified value of 9.0V? If so, go to step  8 . If not, go to next step.
  3. Measure the voltage across the battery terminals. Compare the battery voltage with the Electronic Battery FD parameter in the BCM data list. Are the voltages within the specified value of 1.0V? If so, go to step  8 . If not, go to next step.
  4. Turn OFF the ignition. Disconnect the harness connector of the module setting DTC B1327. Turn ON the ignition, with the engine OFF. Measure the voltage between the battery positive voltage circuit of the module setting the DTC B1327 and the ground circuit of the module setting the DTC B1327. Does the voltage measure greater than the specified value of 9.0V? If so, go to step  8 . If not, go to next step.
  5. Measure the voltage between the battery positive voltage circuit of the module setting the DTC B1327 and a good ground. Does the voltage measure greater than the specified value of 9.0V? If so, go to next step. If not, go to step  7 .
  6. Test the ground circuit of the module setting the code for a high resistance or an open. Did you find and correct the condition? If so, go to step  10 . If not, go to step  8 .
  7. Test the battery positive voltage circuit of the module setting the code for a high resistance or an open. Did you find and correct the condition? If so, go to step  10 . If not, go to next step.
  8. Inspect for poor connections at the harness connector of the module setting the code. Did you find and correct the condition? If so, go to next step.
  9. Replace the module setting the code. Did you complete the replacement? If so, go to next step.
  10. Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. See CONDITIONS FOR RUNNING THE DTC  . Does the DTC reset? If so, go to step  2 . If not, then system is okay.
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