Infiniti FX35, FX50 (S51). Manual — part 705
P0643 SENSOR POWER SUPPLY
EC-361
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 8.
8.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly.
2.
Go to
EC-445, "Special Repair Requirement"
.
>> INSPECTION END
9.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
EC-362
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0850 PNP SWITCH
P0850 PNP SWITCH
Description
INFOID:0000000005236952
When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM is sent to ECM.
DTC Logic
INFOID:0000000005236953
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
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.
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-III
1.
Turn ignition switch ON.
2.
Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-III. Then check the “P/N POSI SW” sig-
nal under the following conditions.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Go to
4.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Select “DATA MONITOR” mode with CONSULT-III.
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 PNP signal circuit is open or short-
ed.)
• TCM
Position (Selector lever)
Known-good signal
N or P 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
P0850 PNP SWITCH
EC-363
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
5.
PERFORM COMPONENT FUNCTION CHECK
With GST
Perform component function check. Refer to
EC-363, "Component Function Check"
.
NOTE:
Use component function check to check the overall function of the PNP signal circuit. During this check, a 1st
trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Component Function Check
INFOID:0000000005236954
1.
PERFORM COMPONENT FUNCTION CHECK
With GST
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000005236955
1.
CHECK DTC WITH TCM
TM-62, "CONSULT-III Function (TRANSMISSION)"
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
>> Check DTC with BCM. Refer to
BCS-17, "COMMON ITEM : CONSULT-III Function (BCM - COM-
3.
CHECK PARK/NEUTRAL POSITION (PNP) SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly harness connector.
3.
Disconnect ECM harness connector.
4.
Check the continuity between A/T assembly harness connector and ECM harness connector.
VHCL SPEED SE
More than 64 km/h (40 mph)
Selector lever
Suitable position
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
M107
109
128
Selector lever
P or N
Battery voltage
Except above
Approx. 0
EC-364
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0850 PNP SWITCH
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F1, E3
• Harness connectors E106, M6
• Harness for open or short between A/T assembly and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
A/T assembly
ECM
Continuity
Connector
Terminal
Connector
Terminal
F51
9
M107
109
Existed
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст