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Pinpoint Tests - OSC Equipped Vehicle: P0657: Testing

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Power to all solenoids has been interrupted. Monitor PID tspc_flg. If tspc_flg = 1, then TSPC is on. If tspc_flg = 0, then TSPC is off. CHECK for opens, short to ground and the harness disconnected. REPAIR as required. When TSPC is commanded OFF as a FMEM action, CHECK all solenoids for correct function as listed in the band, clutch, solenoid and switch application chart. For additional information on diagnosing PCM concerns, See INTRODUCTION - GASOLINE article or INTRODUCTION -- 6.0L DIESEL article.

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