Nissan Rogue Service Manual: P0850 PNP switch

Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / P0850 PNP switch

Description

Transmission range switch is turn ON when the selector lever is P or N.

ECM detects the position because the continuity of the line (the ON) exists.

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition
P0850	P-N POS SW/CIRCUIT (Park/neutral switch input circuit)	The signal of transmission range switch is not changed in the process of engine starting and driving.

POSSIBLE CAUSE

Harness or connectors (The transmission range switch circuit is open or shorted.)
Transmission range switch

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.INSPECTION START

Do you have CONSULT? Do you have CONSULT? YES >> GO TO 2.

NO >> GO TO 5.

2.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

Turn ignition switch OFF and wait at least 10 seconds.
Turn ignition switch ON.
Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 3.

3.CHECK PNP SIGNAL FUNCTION

With CONSULT

Turn ignition switch ON.
Select “P/N POSI SW” in “DATA MONITOR” mode of “ENGINE” using CONSULT. Then check the “P/N POSI SW” signal as per the following conditions.

Selector lever position	Known-good signal
N or P position	ON
Except above position	OFF

Is the inspection result normal? YES >> GO TO 4.

NO >> Proceed to EC-383, "Diagnosis Procedure".

4.PERFORM DTC CONFIRMATION PROCEDURE

Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
Start engine and warm it up to normal operating temperature.
Maintain the following conditions for at least 60 consecutive seconds.

CAUTION: Always drive vehicle at a safe speed.

ENG SPEED	1,000 - 6,375 rpm
COOLAN TEMP/S	More than 65°C (149°F)
B/FUEL SCHDL	3.25 - 31.8 msec
VHCL SPEED SE	More than 64 km/h (40 mph)
Selector lever	Suitable position

Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-383, "Diagnosis Procedure".

NO >> INSPECTION END

5.PERFORM COMPONENT FUNCTION CHECK

Turn ignition switch ON.
Check the voltage between ECM harness connector terminals as per the following conditions.

Perform component function check

Is the inspection result normal? YES >> INSPECTION EN

NO >> Proceed to EC-383, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK TRANSMISSION RANGE SWITCH POWER SUPPLY

Turn ignition switch OFF.
Disconnect transmission range switch harness connector.
Turn ignition switch ON.
Check the voltage between transmission range switch harness connector and ground.

Check transmission range switch power supply

Is the inspection result normal? YES >> GO TO 3.

NO >> GO TO 2.

2.CHECK TRANSMISSION RANGE SWITCH POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect IPDM E/R harness connector.
Check the continuity between transmission range switch harness connector and IPDM E/R harness connector.

Check transmission range switch power supply circuit

Also check harness for short to ground.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

3.CHECK TRANSMISSION RANGE SWITCH SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the continuity between transmission range switch harness connector and ECM harness connector.

Check transmission range switch signal circuit

Also check harness for short to ground and to power.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace error-detected parts.

4.CHECK TRANSMISSION RANGE SWITCH

Check the transmission range switch. Refer to TM-111, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Replace transmission range switch. Refer to TM-220, "Removal and Installation".

5.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

>> INSPECTION END

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