Nissan Pathfinder (2005 year). Instruction — part 220
DTC P1572 ASCD BRAKE SWITCH
EC-611
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EC
2005 Pathfinder
11.
CHECK INTERMITTENT INCIDENT
Refer to
EC-158, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
EC-612
DTC P1572 ASCD BRAKE SWITCH
2005 Pathfinder
Component Inspection
UBS00KG8
ASCD BRAKE SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
If NG, adjust ASCD brake switch installation, refer to
, and perform step 3 again.
STOP LAMP SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check harness continuity between stop lamp switch terminals 1
and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to
, and perform step 3 again.
Condition
Continuity
When brake pedal is fully released.
Should exist.
When brake pedal is slightly depressed.
Should not exist.
SEC023D
Condition
Continuity
When brake pedal is fully released.
Should not exist.
When brake pedal is slightly depressed.
Should exist.
PBIB1185E
DTC P1574 ASCD VEHICLE SPEED SENSOR
EC-613
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2005 Pathfinder
DTC P1574 ASCD VEHICLE SPEED SENSOR
PFP:31036
Component Description
UBS00KG9
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-
tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to
EC-30, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for ASCD functions.
On Board Diagnosis Logic
UBS00KGA
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
●
If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to
.
●
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to
●
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to
DTC Confirmation Procedure
UBS00KGB
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1.
Start engine.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Drive the vehicle at more than 40 km/h (25 MPH).
4.
If DTC is detected, go to
EC-614, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1574
1574
ASCD vehicle speed
sensor
ECM detects a difference between two vehicle
speed signals is out of the specified range.
●
Harness or connectors
(The CAN communication line is open or
shorted.)
●
Combination meter
●
ABS actuator and electric unit (control unit)
●
Wheel sensor
●
TCM
●
ECM
SEF058Y
EC-614
DTC P1574 ASCD VEHICLE SPEED SENSOR
2005 Pathfinder
Diagnostic Procedure
UBS00KGC
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace.
3.
CHECK DTC WITH COMBINATION METER
Refer to
.
>> INSPECTION END
DTC P1706 PNP SWITCH
EC-615
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2005 Pathfinder
DTC P1706 PNP SWITCH
PFP:32006
Component Description
UBS00KGD
When the selector lever position is P or N, park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-II Reference Value in Data Monitor Mode
UBS00KGE
Specification data are reference values.
On Board Diagnosis Logic
UBS00KGF
DTC Confirmation Procedure
UBS00KGG
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to
EC-618, "Diagnostic Procedure"
.
If OK, go to following step.
3.
Select “DATA MONITOR” mode with CONSULT-II.
4.
Start engine and warm it up to normal operating temperature.
5.
Maintain the following conditions for at least 60 consecutive sec-
onds.
6.
If 1st trip DTC is detected, go to
EC-618, "Diagnostic Procedure"
.
MONITOR ITEM
CONDITION
SPECIFICATION
P/N POSI SW
●
Ignition switch: ON
Shift lever: P or N
ON
Shift lever: Except above
OFF
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1706
1706
Park/neutral position
switch
The signal of the park/neutral position (PNP)
switch is not changed in the process of engine
starting and driving.
●
Harness or connectors
[The park/neutral position (PNP) switch
circuit is open or shorted.]
●
Park/neutral position (PNP) switch
●
Combination meter
●
TCM
Position (Selector lever)
Known-good signal
P or N 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
VHCL SPEED SE
More than 64 km/h (40 MPH)
Selector lever
Suitable position
SEF212Y
SEF213Y
EC-616
DTC P1706 PNP SWITCH
2005 Pathfinder
Overall Function Check
UBS00KGH
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH GST
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 102 (PNP switch signal)
and ground under the following conditions.
3.
If NG, go to
EC-618, "Diagnostic Procedure"
.
Condition (Gear position)
Voltage V (Known-good data)
P or N position
Approx. 0
Except above position
BATTERY VOLTAGE
(11 - 14V)
MBIB0043E
DTC P1706 PNP SWITCH
EC-617
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2005 Pathfinder
Wiring Diagram
UBS00KGI
BBWA1767E
EC-618
DTC P1706 PNP SWITCH
2005 Pathfinder
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
UBS00KGJ
1.
CHECK DTC WITH TCM
Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace.
2.
CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
Yes or No
Yes
>> GO TO 3.
No
>> Refer to
.
3.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly harness connector.
3.
Disconnect combination meter harness connector.
4.
Check harness continuity between A/T assembly terminal 9 and combination meter terminal 17.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M31, E152
●
Harness connectors E5, F14
●
Harness for open or short between A/T assembly and combination meter.
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
102
G
PNP switch
[Ignition switch: ON]
●
Shift lever: P or N
Approximately 0V
[Ignition switch: ON]
●
Except above position
BATTERY VOLTAGE
(11 - 14V)
Continuity should exist.
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