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Home >> Saturn >> 2001 >> SL2 Standard, MP3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Memory Systems) >> Diagnostic Tests >> DTC B2263: Mirror Horizontal Position Sensor Fault (RDCM) >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Right Door Control Module (RDCM) determines horizontal position of right mirror from a signal received from horizontal position sensor. RDCM commands mirror memory settings based on voltage level RDCM receives back from horizontal sensor. RDCM provides a 5-volt supply, a right-side mirror horizontal position signal and a ground to horizontal position sensor. When a memory setting is recalled, RDCM will command right mirror motor to move to a stored position sensor voltage previously set. RDCM monitors right mirror horizontal position signal circuit and can determine if voltage level received is out of range.

DTC B2263 will set if LDCM detects left mirror horizontal position sensor signal voltage range less than 0.10 volt or more than 4.78 volts for more than 2 seconds. DTC B2263 will store as a history code in RDCM memory. No driver warning will be displayed. DTC can only set as history even if malfunction is current.

Under all fault conditions, DTC B2263 will clear automatically when RDCM no longer detects right mirror horizontal position sensor signal voltage range less than 0.10 volt or more 4.78 volts for more than 2 seconds. Current and history DTCs can be cleared using scan tool or Instrument Panel Cluster (IPC) clearing DTCs feature.