P0850

DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT

CIRCUIT DESCRIPTION

DTC Detection Condition:

The park/neutral position switch detects the shift lever position and sends signals to the ECM.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Malfunction Thresholds:

Component Operating Range:

The park/neutral position switch detects the shift lever position and sends a signal to the ECM.

For security, the park/neutral position switch detects the shift lever position so that engine can be started only when the vehicle is in P or N shift position.

When the park/neutral position switch sends more than one signal at a time from switch positions P, R, N or D, the ECM interprets this as a fault in the switch. The ECM will turn on the MIL and store the DTC.

Wiring Diagram:

Step 1:

Step 2:

Step 3:

INSPECTION PROCEDURE

HINT: According to the DATA LIST displayed by the OBD II scan tool or Hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one method to shorten labor time.

a. Warm up the engine.
b. Turn the ignition switch OFF.
c. Connect the OBD II scan tool or Hand-held tester to the DLC3.
d. Turn the ignition switch ON.
e. Push the "ON" button of OBD II scan tool or Hand-held tester.
f. Select the item "/DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL (or ATM)".

g. According to the display on tester, read the "DATA LIST".