Nissan Pathfinder (2010 year). Manual — part 281
EC-340
< COMPONENT DIAGNOSIS >
[VQ40DE]
P1554 BATTERY CURRENT SENSOR
3. Install jumper cable between battery negative terminal and body
ground.
4. Turn ignition switch ON.
5. Check voltage between ECM terminal 71 (battery current sensor
signal) and ground.
6. If NG, replace battery negative cable assembly.
BBIA0588E
Voltage: Approximately 2.5V
PBIB2617E
2010 Pathfinder
P1564 ASCD STEERING SWITCH
EC-341
< COMPONENT DIAGNOSIS >
[VQ40DE]
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P1564 ASCD STEERING SWITCH
Component Description
INFOID:0000000005257359
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
for the ASCD function.
On Board Diagnosis Logic
INFOID:0000000005257360
This self-diagnosis has the one trip detection logic.
The MIL will not illuminate for this diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to
.
DTC Confirmation Procedure
INFOID:0000000005257361
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
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.
WITH CONSULT-III
1. Turn ignition switch ON and wait at least 10 seconds.
2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
5. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Check DTC.
7. If DTC is detected, go to
.
Diagnosis Procedure
INFOID:0000000005257362
1.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
PBIB2645E
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1564
1564
ASCD steering switch
• An excessively high voltage signal from the ASCD
steering switch is sent to ECM.
• ECM detects that input signal from the ASCD steer-
ing switch is out of the specified range.
• ECM detects that the ASCD steering switch is stuck
ON.
• Harness or connectors
(The switch circuit is open or shorted.)
• ASCD steering switch
• ECM
2010 Pathfinder
EC-342
< COMPONENT DIAGNOSIS >
[VQ40DE]
P1564 ASCD STEERING SWITCH
2. Loosen and retighten three ground screws on the body. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON.
2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with
CONSULT-III.
3. Check each item indication under the following conditions.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with press-
ing each button.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 3.
3.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect combination switch harness connector.
BBIA0539E
Switch Monitor
item
Condition
Indication
MAIN switch
MAIN SW
Pressed
ON
Released
OFF
CANCEL switch
CANCEL SW
Pressed
ON
Released
OFF
RESUME/ACCELER-
ATE switch
RESUME/ACC SW
Pressed
ON
Released
OFF
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
Switch
Condition
Voltage [V]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4
CANCEL switch
Pressed
Approx. 1
Released
Approx. 4
RESUME/ACCELERATE
switch
Pressed
Approx. 3
Released
Approx. 4
SET/COAST switch
Pressed
Approx. 2
Released
Approx. 4
PBIB0311E
2010 Pathfinder
P1564 ASCD STEERING SWITCH
EC-343
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[VQ40DE]
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3. Disconnect ECM harness connector.
4. Check harness continuity between combination switch terminal 15 and ECM terminal 67. 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
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 99 and combination switch terminal 14.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M31, E152
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK ASCD STEERING SWITCH
EC-343, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace steering switch.
8.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>>
INSPECTION END
Component Inspection
INFOID:0000000005257363
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable).
Continuity should exist.
Continuity should exist.
2010 Pathfinder
EC-344
< COMPONENT DIAGNOSIS >
[VQ40DE]
P1564 ASCD STEERING SWITCH
2. Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch.
Switch
Condition
Resistance [
Ω
]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4,000
CANCEL switch
Pressed
Approx. 250
Released
Approx. 4,000
RESUME/ACCELERATE
switch
Pressed
Approx. 1,480
Released
Approx. 4,000
SET/COAST switch
Pressed
Approx. 660
Released
Approx. 4,000
JMBIA1066GB
2010 Pathfinder
P1572 ASCD BRAKE SWITCH
EC-345
< COMPONENT DIAGNOSIS >
[VQ40DE]
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P1572 ASCD BRAKE SWITCH
Component Description
INFOID:0000000005257364
When the brake pedal is depressed, ASCD brake switch is turned
OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by those two types of input (ON/OFF signal).
for the ASCD function.
On Board Diagnosis Logic
INFOID:0000000005257365
This self-diagnosis has the one trip detection logic.
The MIL will not illuminate for this diagnosis.
NOTE:
•
If DTC P 1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
.
•
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when ignition switch is turn OFF. And even when malfunction A is detected in
two consecutive trips, DTC is not stored in ECM memory.
DTC Confirmation Procedure
INFOID:0000000005257366
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
• The procedure for malfunction B is not described. It takes an extremely long time to complete the procedure
for malfunction B. By performing the procedure for malfunction A, the condition that causes malfunction B
can be detected.
• If DTC Confirmation Procedure has been previously conducted, always perform the following before con-
ducting the next step.
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.
TESTING CONDITION:
Steps 4 and 5 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-III
1. Start engine (VDC switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-III.
3. Press MAIN switch and make sure that CRUISE indicator illuminates.
BBIA0560E
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1572
1572
ASCD brake switch
A)
When the vehicle speed is above 30km/h (19
MPH), ON signals from the stop lamp switch
and the ASCD brake switch are sent to ECM
at the same time.
• Harness or connectors
(The stop lamp switch circuit is shorted.)
• Harness or connectors
(The ASCD brake switch circuit is shorted.)
• Stop lamp switch
• ASCD brake switch
• Incorrect stop lamp switch installation
• Incorrect ASCD brake switch installation
• ECM
B)
ASCD brake switch signal is not sent to ECM
for extremely long time while the vehicle is
being driven
2010 Pathfinder
EC-346
< COMPONENT DIAGNOSIS >
[VQ40DE]
P1572 ASCD BRAKE SWITCH
4. Drive the vehicle for at least 5 consecutive seconds under the following condition.
5. Check 1st trip DTC.
If DTC is detected, go to
.
If DTC is not detected, go to the following step.
6. Drive the vehicle for at least 5 consecutive seconds under the following condition.
7. Check 1st trip DTC.
8. If DTC is detected, go to
.
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005257367
1.
CHECK OVERALL FUNCTION-I
With CONSULT-III
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the
following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK OVERALL FUNCTION-II
With CONSULT-III
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-III
VHCL SPEED SE
More than 30 km/h (19 MPH)
Selector lever
Suitable position
VHCL SPEED SE
More than 30 km/h (19 MPH)
Selector lever
Suitable position
Driving location
Depress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned vehicle speed.
CONDITION
INDICATION
When brake pedal: Slightly depressed
OFF
When brake pedal: Fully released
ON
CONDITION
VOLTAGE
When brake pedal: Slightly depressed
Approximately 0V
When brake pedal: Fully released
Battery voltage
MBIB0061E
CONDITION
INDICATION
When brake pedal: Fully released
OFF
When brake pedal: Slightly depressed
ON
2010 Pathfinder
P1572 ASCD BRAKE SWITCH
EC-347
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Check voltage between ECM terminal 101 and ground under the following conditions.
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 7.
3.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-III or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E160
• 10 A fuse (No.12)
• Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground in harness or connectors.
5.
CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.
CONDITION
VOLTAGE
When brake pedal: Fully released
Approximately 0V
When brake pedal: Slightly depressed
Battery voltage
MBIB0060E
BBIA0560E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.
2010 Pathfinder
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