Nissan Quest E52. Instruction — part 532
EC-338
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0643 SENSOR POWER SUPPLY
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair short to ground or short to power in harness or connectors.
3.
CHECK COMPONENTS
Check the following.
• Camshaft position sensor (PHASE) (Refer to
EC-276, "Component Inspection"
• Battery current sensor (Refer to
EC-351, "Component Inspection"
.)
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace malfunctioning component.
4.
CHECK TP SENSOR
Check TP sensor. Refer to
EC-198, "Component Inspection"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace electric throttle control actuator. Refer to
5.
CHECK APP SENSOR
Check APP sensor. Refer to
EC-405, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace accelerator pedal assembly. Refer to
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F7
24
TP sensor
F29
1
F8
75
Battery current sensor
F76
1
83
CMP sensor (PHASE) (bank 1)
F26
1
87
CMP sensor (PHASE) (bank 2)
F69
1
E16
99
APP sensor
E110
4
P0850 PNP SWITCH
EC-339
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0850 PNP SWITCH
Description
INFOID:0000000009651176
When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM is sent to ECM.
DTC Logic
INFOID:0000000009651177
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
INSPECTION START
Will CONSULT be used?
Will CONSULT be used?
YES
>> GO TO 2.
NO
>> GO TO 5.
2.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
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.
>> GO TO 3.
3.
CHECK PNP SIGNAL
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
.
4.
PERFORM DTC CONFIRMATION PROCEDURE
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.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0850
Park/neutral position
switch
The signal of the park/neutral position (PNP)
signal does not change during driving after the
engine is started.
• Harness or connectors
[The park/neutral position (PNP) signal
circuit is open or shorted.]
• TCM
Position (Selector lever)
Known-good signal
N or P position
ON
Except above position
OFF
ENG SPEED
1,100 - 6,375 rpm
COOLAN TEMP/S
More than 70
°
C (158
°
F)
B/FUEL SCHDL
3.0 - 31.8 msec
EC-340
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0850 PNP SWITCH
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
5.
PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to
EC-340, "Component Function Check"
NOTE:
Use component function check to check the overall function of the park/neutral position (PNP) signal circuit.
During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Component Function Check
INFOID:0000000009651178
1.
PERFORM COMPONENT FUNCTION CHECK
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000009651179
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning part.
2.
CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
YES
>> GO TO 3.
NO
>> Refer to
BCS-16, "COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)"
3.
CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1.
Turn ignition switch OFF.
2.
Disconnect TCM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between TCM harness connector and IPDM E/R harness connector.
VHCL SPEED SE
More than 64 km/h (40 mph)
Selector lever
Suitable position
ECM
Condition
Voltage
Connector
+
–
Terminal
Terminal
E16
118
128
Selector lever
position
P or N
Battery voltage
Except above
Approx. 0 V
P0850 PNP SWITCH
EC-341
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK PNP SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1.
Disconnect IPDM E/R harness connectors.
2.
Disconnect ECM harness connector.
3.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
TCM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F23
20
F12
72
Existed
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E16
118
E10
30
Existed
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