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P0850-PARK/NEUTRAL SWITCH PERFORMANCE (CONTINUED) 2. TRS (T41) SENSE (P/N SENSE) CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. Disconnect the Transmission Range Sensor harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 3 No >> Repair the open in the TRS (T41) Sense (P/N Sense) cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 3. TRS (T41) SIGNAL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the TRS (T41) Sense Is the resistance above 100k ohms? Yes >> Go To 4 No >> Repair the short to ground in the TRS (T41) Sense (P/N Sense) circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 747 |