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P0850-P/N SWITCH PERFORMANCE (GAS) (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 48RE - SCHE- For a complete wiring diagramRefer to Section 8W • When Monitored: • Set Condition: Possible Causes TRS CONNECTOR DAMAGE OR CORROSION PCM CONNECTOR DAMAGE OR CORROSION (T41) P/N POSITION SWITCH SENSE CIRCUIT OPEN (T41) P/N POSITION SWITCH SENSE CIRCUIT SHORT TO GROUND (T41) P/N POSITION SWITCH SENSE CIRCUIT SHORT TO ANOTHER CIRCUIT TRANSMISSION RANGE SENSOR POWERTRAIN CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Diagnostic Test 1. CHECK IF THE SCAN TOOL DISPLAYS P/N AND D/R IN THE CORRECT POSITION Ignition on, engine not running. With the scan tool, monitor the PNP switch input state. Move the gear selector through all gear positions Park to 1st and back to Park.. Did the scan tool display P/N and D/R in the correct gear positions? Yes >> Go To 8 No >> Go To 2 2. CHECK THE TRS CONNECTOR FOR DAMAGE OR CORROSION Turn the ignition off to the lock position. Disconnect the Transmission Range Sensor harness connector. Inspect the Transmission Range Sensor harness wiring and connector for damage, pushed out pins, or corrosion, Were there any problems found? Yes >> Repair as necessary. Perform RE TRANSMISSION VERIFICATION TEST VER - 1 (GAS). (Refer to 21 - TRANSMISSION/ No >> Go To 3 21 - 800 AUTOMATIC TRANSMISSION - 48RE - GAS - ELECTRICAL DIAGNOSTICS DR/DH |