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P0870-OD HYDRAULIC PRESSURE TEST (CONTINUED) 15. OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (T9) OD Pressure Is the resistance below 5.0 ohms? Yes >> Repair the (T9) OD Pressure Switch Sense circuit for a short to ground. Perform 45RFE/545RFE TRANSMISSION VERIFICATION No >> Go To 16 16. OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO OTHER CIRCUITS Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connec- NOTE: Make sure the Transmission Solenoid/TRS Assembly har- NOTE: Check connectors - Clean/repair as necessary. Is the resistance below 5.0 ohms between the (T9) OD Pressure Yes >> Repair the (T9) OD Pressure Switch Sense circuit for a short to other circuit(s). Perform 45RFE/545RFE TRANSMISSION VERIFICATION No >> Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 21 - 166 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |