B1482

CIRCUIT DESCRIPTION
The Body Control Module (BCM) inadvertent power circuit is used as a input circuit and a output circuit. When used as an output circuit the BCM provides battery power to the inadvertent power loads. When used as a input circuit the BCM provides an interface to the electrical loads which are controlled by inadvertent power circuit when the output is inactive. This will allow for determination of the ON/OFF status of the loads.

CONDITIONS FOR RUNNING THE DTC
If the voltage level at the BCM drops to 0 volts.

CONDITIONS FOR SETTING THE DTC
^ The fault code sets when the BCM commanded state does not match the feedback. When the inadvertent power output circuit is commanded high and a short to ground is present.
^ The fault code also sets when the battery positive voltage circuit that supplies the Inadvertent power Input circuit is open or shorted to ground.
^ The condition above must be present for more than 0.1 seconds

ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B1482 in memory.

CONDITIONS FOR CLEARING THE MIL/DTC
^ A current DTC B1482 will clear if the short to ground is no longer detected by the BCM.
^ A history DTC B1482 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present nor any other malfunction in the BCM is detected.
^ The BCM receives a clear code command from the scan tool.

DIAGNOSTIC AIDS
^ If the DTC B1482 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to ground in the inadvertent power input circuit.
- An intermittent open in the battery positive voltage circuit of the BCM that supplies the Inadvertent power Input circuit.
- The BCM is intermittently shorted to ground.

TEST DESCRIPTION

Steps 1-8:

The number(s) below refer to the step number(s) on the diagnostic table.
3. Tests the battery positive voltage circuit for a short to ground or an open.
4. Tests for a short to ground in the Inadvertent power Input circuit.