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P0850 REVERSE/NEUTRAL POSITION SWITCH ECM-309 < DTC/CIRCUIT DIAGNOSIS > [MR20DD] C D E F G H I J K L M A ECM N P O 4. Check 1st trip DTC. Is 1st trip DTC detected? YES >> Proceed to ECM-309, "CVT : Diagnosis Procedure" NO >> INSPECTION END 5. PERFORM COMPONENT FUNCTION CHECK 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector and ground as per the following conditions. Is the inspection result normal? YES-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident" YES-2 >> Confirmation after repair: INSPECTION END >> Proceed to ECM-309, "CVT : Diagnosis Procedure" CVT : Diagnosis Procedure INFOID:0000000010703002 1. CHECK TRANSMISSION RANGE SWITCH POWER SUPPLY 1. Turn ignition switch OFF. 2. Disconnect transmission range switch harness connector. 3. Turn ignition switch ON. 4. Check the voltage between transmission range switch harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Perform the trouble diagnosis for power supply circuit. 2. CHECK TRANSMISSION RANGE SWITCH SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between transmission range switch harness connector and ECM harness connector. 4. Also check harness for short to ground and to power. ENG SPEED 1,600 - 6,375 rpm COOLAN TEMP/S More than 70 ° C (158 ° F) B/FUEL SCHDL 1.7 - 31.8 msec VHCL SPEED SE More than 64 km/h (40 mph) Shift lever Suitable position + − Condition Voltage (Approx.) ECM Connector Terminal F15 14 Ground Selector lever P or N Battery voltage Except above 0 V + − Voltage Transmission range switch Connector Terminal F61 1 Ground Battery voltage + − Continuity Transmission range switch ECM Connector Terminal Connector Terminal F61 2 F15 14 Existed |