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DTC P1653 - TRACTION CONTROL SYSTEM (TCS) DELIVERED TORQUE CONTROL CIRCUIT Oldsmobile Eighty-Eight X

Note. For circuit reference, see DTC P1381 schematic.

Circuit Description

Electronic Brake and Traction Control Module (EBTCM) controls Pulse Width Modulation (PWM) signal on desired torque circuit while monitoring wheel speed sensors to detect slippage.

Output Driver Modules (ODM) are used by PCM to turn on current-driven devices needed to control various engine and transaxle functions. Each ODM can control up to 7 outputs, including traction control delivered circuit, by supplying ground to device PCM is commanding on. ODMs can diagnose each circuit individually. If ODM "B" output 3 (traction control delivered torque circuit) detects an improper voltage level, P1653 is set.