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P0850 PNP SWITCH EC-1259 < DTC/CIRCUIT DIAGNOSIS > [VQ40DE FOR MEXICO] C D E F G H I J K L M A EC N P O P0850 PNP SWITCH Component Description INFOID:0000000009481911 When the selector lever position is P or N, park/neutral position (PNP) signal is sent to ECM from TCM via combination meter (unified meter control unit). ECM detects the position because the continuity of the line (the ON signal) exists. On Board Diagnosis Logic INFOID:0000000009481912 DTC Confirmation Procedure INFOID:0000000009481913 CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- ing the next step. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. WITH CONSULT 1. Turn ignition switch ON. 2. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT. Then check the “P/N POSI SW” signal under the following conditions. If NG, go to EC-1260, "Diagnosis Procedure" . If OK, go to following step. 3. Select “DATA MONITOR” mode with CONSULT. 4. Start engine and warm it up to normal operating temperature. 5. Maintain the following conditions for at least 60 consecutive seconds. 6. Check 1st trip DTC. 7. If 1st trip DTC is detected, go to EC-1260, "Diagnosis Procedure" Overall Function Check INFOID:0000000009481914 Use this procedure to check the overall function of the park/neutral position (PNP) signal circuit. During this check, a 1st trip DTC might not be confirmed. WITH GST DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0850 Park/neutral position The park/neutral position (PNP) signal not • Harness or connectors [The park/neutral position (PNP) signal • Transmission range switch Position (Selector lever) Known-good signal P or N position ON Except above position OFF ENG SPEED 1,400 - 6,375 rpm COOLAN TEMP/S More than 70 °C (158°F) B/FUEL SCHDL 2.0 - 31.8 msec VHCL SPEED SE More than 64 km/h (40 MPH) Selector lever Suitable position |