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The SERVICE 4WD indicator will remain illuminated for the remainder of the current ignition Conditions for Clearing the DTC The transfer case shift control module will clear the DTC if the condition for setting the A history DTC will clear after 33 consecutive ignition cycles without a fault present. History DTCs can be cleared using a scan tool. Test Description The numbers below refer to the step numbers on the diagnostic table. 2: This step tests for voltage at the ignition 3 voltage side of the transfer case select switch. 3: This step tests the control circuit of the Neutral indicator for a short to voltage or an 4: This step tests the control circuit of the Neutral indicator for a short to ground. DTC B0790 Step Action Yes No Schematic Reference: Transfer Case Control Schematics 1 Did you perform the Diagnostic System Go to Step 2 Go to 2 1. Turn the ignition OFF. 2. Remove the transfer case select switch. 3. Disconnect the connector on the transfer case select switch. 4. Turn the ignition ON. 5. Probe the Ignition 3 voltage circuit with a DMM that is connected to a good Does the DMM indicate battery voltage? Go to Step 3 Go to Step 6 Test the Neutral indicator control circuit for a
2007 Hummer H3 2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3
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