Regal V6-3.8L SC VIN 1 (1998)
Body Control Module: Reading and Clearing Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes
Use one of these two methods for clearing DTCs in the Body Control Module (BCM) memory:
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The Tech 2 scan tool method.
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The ignition cycle default method.
These methods will not clear BCM DTCs:
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Unplugging the BCM electrical connectors.
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Disconnecting the battery cables.
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Turning the ignition switch to the LOCK or OFF position (except on an ignition cycle default).
IMPORTANT:
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Check for proper BCM operation and the absence of DTCs after completing the clearing procedure.
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DTC P1626 will set in the Powertrain Control Module (PCM) when the ignition switch is in the RUN position with the BCM disconnected. When
BCM diagnostics and repairs are completed, refer to the Engine Controls for more information on PCM related DTCs. See:
Scan Tool Method
Refer to the Tech 2 scan tool user's manual for menu navigation instructions.
Ignition Cycle Default
The Body Control Module (BCM) clears a DTCs automatically when the malfunction that set such DTC does not occur for 100 ignition cycles.
Reading Diagnostic Trouble Codes (DTCS)
Use a Tech 2 scan tool for reading Diagnostic Trouble Codes (DTCs). The Body Control Module (BCM) is unable to flash DTCs. Refer to the Tech 2
scan tool user's manual for menu navigation instructions.
Trouble Codes - Current & History
The Body Control Module (BCM) stores DTCs as current or history DTCs. If the BCM detects a malfunction, the BCM stores a DTC that corresponds
to that particular malfunction. The BCM does not send a message to the Instrument Panel Cluster (IPC) to display a message, such as turning on a
warning indicator lamp. If the BCM stores a current DTC and the malfunction is no longer present, some DTCs will remain current until the next ignition
cycle. Other DTCs change from current to history without requiring a new ignition cycle when the fault is no longer present. History DTCs are
intermittent malfunctions and must be diagnosed differently than current DTCs. Refer to Intermittent and Poor Connections for more information.
See: Initial Inspection and Diagnostic Overview/Intermittents and Poor Connections
