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P2638-TORQUE MANAGEMENT FEEDBACK SIGNAL PERFORMANCE (CONTINUED) 3. CHECK IF DTC RESETS Turn the ignition off to the lock position. Replace and program the Powertrain Control Module per the Service Information. Refer to 8 - ELECTRICAL/ELEC- With the scan tool, record the Environmental Data and erase Transmission DTCs. NOTE: If the TCM detects and stores a DTC, the TCM also stores the vehicles operating conditions under With the scan tool, read Transmission DTCs. Did the DTC P2638-TORQUE MANAGEMENT FEEDBACK SIGNAL PERFORMANCE reset? Yes >> Using the schematics as a guide, check the Transmission Control Module (TCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. No >> Test Complete. Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. 21 - 594 AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS WK |