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Diagnostic Aids

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.
  1. If DTC does not reset after code is cleared, problem may be intermittent. While performing tests, move wires and connectors. Following conditions may also cause an intermittent malfunction:
    • Intermittent open or short to ground in Orange wire circuit between instrument panel electrical center and Seat Control Module (SCM).
    • Battery voltage is not 8.5-16.3 volts.
    • Charging system malfunction.
  2. Using scan tool, select SCM data display and monitor BATTERY 1 voltage while test driving vehicle and operating different devices (windows, door locks, power mirrors). This will determine if battery 1 voltage is affected by these devices and can help duplicate the malfunction.
Fig 1: Identifying Seat Control Module Connector C1 Terminals
G98C12221Courtesy of GENERAL MOTORS CORP.
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