Nissan Qashqai J11. Manual — part 333
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
NO
>> 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
ECM-310
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P0850 REVERSE/NEUTRAL POSITION SWITCH
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK TRANSMISSION RANGE SWITCH
Check the transmission range switch. Refer to
TM-303, "Component Inspection"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
TM-415, "Removal and Installation"
.
M/T
M/T : DTC Description
INFOID:0000000010703003
Reverse / neutral position switch is turn ON when the selector lever is R or N.
ECM detects the position because the continuity of the line (the ON) exists.
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (Reverse / neutral position signal circuit is open or shorted.)
• Reverse / neutral position 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 turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 3.
3.
CHECK PNP SIGNAL FUNCTION
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.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Proceed to
ECM-311, "M/T : Diagnosis Procedure"
.
4.
PERFORM DTC CONFIRMATION PROCEDURE
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0850
P-N POS SW/CIRCUIT
(Reverse / neutral switch input circuit)
The signal of reverse / neutral position switch is not changed in the process
of engine starting and driving.
Position (Shift lever)
Known-good signal
N or P position
ON
Except above position
OFF
P0850 REVERSE/NEUTRAL POSITION SWITCH
ECM-311
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
1.
Select “DATA MONITOR” mode with CONSULT.
2.
Start engine and warm it up to normal operating temperature.
3.
Maintain the following conditions for at least 50 consecutive seconds.
CAUTION:
Always drive vehicle at a safe speed.
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
ECM-311, "M/T : 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
NO
>> Proceed to
ECM-311, "M/T : Diagnosis Procedure"
.
M/T : Diagnosis Procedure
INFOID:0000000010703004
1.
CHECK REVERSE / NEUTRAL POSITION SWITCH POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect reverse / neutral position switch harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between reverse / neutral position 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 REVERSE / NEUTRAL POSITION SWITCH SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between reverse / neutral position switch harness connector and ECM harness con-
nector.
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
Neutral
Battery voltage
Except above
0 V
+
−
Voltage
Reverse / neutral position switch
Connector
Terminal
F100
2
Ground
Battery voltage
ECM-312
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P0850 REVERSE/NEUTRAL POSITION SWITCH
4.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK REVERSE / NEUTRAL POSITION SWITCH
Check the reverse / neutral position switch. Refer to
TM-15, "PARK/NEUTRAL POSITION (PNP) SWITCH :
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace reverse / neutral position switch. Refer to
TM-35, "Removal and Installation"
.
+
−
Continuity
Reverse / neutral position switch
ECM
Connector
Terminal
Connector
Terminal
F100
3
F15
14
Existed
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