Nissan Pathfinder (2012 year). Instruction — part 283
P1564 ASCD STEERING SWITCH
EC-345
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
1. Turn ignition switch ON.
2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with
CONSULT.
3. Check each item indication under the following conditions.
Without CONSULT
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
August 2012
2012 Pathfinder
EC-346
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P1564 ASCD STEERING SWITCH
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-346, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace steering switch. Refer to
ST-20, "Removal and Installation"
.
8.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
>>
INSPECTION END
Component Inspection
INFOID:0000000007358298
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable).
Continuity should exist.
Continuity should exist.
August 2012
2012 Pathfinder
P1564 ASCD STEERING SWITCH
EC-347
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
August 2012
2012 Pathfinder
EC-348
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P1572 ASCD BRAKE SWITCH
P1572 ASCD BRAKE SWITCH
Component Description
INFOID:0000000007358299
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:0000000007358300
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:0000000007358301
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
1. Start engine (VDC switch OFF).
2. Select “DATA MONITOR” mode with CONSULT.
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
August 2012
2012 Pathfinder
P1572 ASCD BRAKE SWITCH
EC-349
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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” above.
Diagnosis Procedure
INFOID:0000000007358302
1.
CHECK OVERALL FUNCTION-I
With CONSULT
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT
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
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT
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
August 2012
2012 Pathfinder
EC-350
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P1572 ASCD BRAKE SWITCH
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 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.
August 2012
2012 Pathfinder
P1572 ASCD BRAKE SWITCH
EC-351
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK ASCD BRAKE SWITCH
EC-352, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace ASCD brake switch. Refer to
BR-23, "Removal and Installation"
.
7.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT or tester.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E160
• 10 A fuse (No.20)
• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK STOP LAMP SWITCH
BBIA0560E
Voltage: Battery voltage
PBIB1184E
Continuity should exist.
August 2012
2012 Pathfinder
EC-352
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P1572 ASCD BRAKE SWITCH
EC-352, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace stop lamp switch. Refer to
BR-23, "Removal and Installation"
.
11.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
>>
INSPECTION END
Component Inspection
INFOID:0000000007358303
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
"Inspection and Adjustment - Standard Pedal"
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
"Inspection and Adjustment - Standard Pedal"
, and perform step
3 again.
Condition
Continuity
When brake pedal: Fully released.
Should exist.
When brake pedal: Slightly depressed.
Should not exist.
SEC023D
Condition
Continuity
When brake pedal: Fully released.
Should not exist.
When brake pedal: Slightly depressed.
Should exist.
PBIB1185E
August 2012
2012 Pathfinder
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст