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DTC B1328 Circuit Description All vehicle modules monitor system voltage. The system voltage message is sent to other modules via Class 2 Conditions for Running the DTC This DTC shall run only if the module has power, ground and the ignition is not in START mode. This DTC Conditions for Setting the DTC This DTC will set as current when the voltage is greater than 15.9 volts for 1.2 seconds and DTC B1390 is not B1327. Does the voltage measure greater than the specified value? Go to Step 6 Go to Step 4 4 Test the batter positive voltage circuit of the module setting - Go to Step 8 Go to Step 5 5 Test the ground sense circuit of the module setting the code - Go to Step 8 Go to Step 6 6 Inspect for poor connections at the harness connector of the - Go to Step 8 Go to Step 7 7 Replace the module setting the DTC. Refer to Control IMPORTANT: Perform the setup procedure for the module setting the - Go to Step 8 - 8 1. Use the scan tool in order to clear the DTCs. 2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset? - Go to Step 2 System OK
2004 Hummer H2 2004 ELECTRICAL Engine Electrical - Hummer H2
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