2007 NISSAN TIIDA Service Repair Manual

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Page 1905 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-556
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
P1572 ASCD BRAKE SWITCH
DescriptionINFOID:0000000001693379
When the brake pedal is depressed, ASCD brake switch is tur

EC-556
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
P1572 ASCD BRAKE SWITCH
DescriptionINFOID:0000000001693379
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 this input of two kinds (ON/OFF signal).
Refer to EC-424, "
System Diagram" for the ASCD function.
DTC LogicINFOID:0000000001693380
DTC DETECTION LOGIC
NOTE:
If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-524, "
DTC Logic".
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 OFF. And even when malfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Do you have CONSULT-III?.
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for mal-
function B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-I
With CONSULT-III
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-III.
3. Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter.
4. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
CAUTION:
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1572 ASCD brake switchA)When the vehicle speed is above 30 km/h
(19 MPH), ON signals from the stop lamp
switch and the ASCD brake switch are sent
to the 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.)
Harness or connectors
(The ASCD clutch switch circuit is shorted.)
(M/T)
Stop lamp switch
ASCD brake switch
ASCD clutch switch (M/T)
Incorrect stop lamp switch installation
Incorrect ASCD brake switch installation
Incorrect ASCD clutch switch installation (M/T)
ECM B)ASCD brake switch signal is not sent to
ECM for extremely long time while the ve-
hicle is driving.

Page 1906 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-557
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the d

P1572 ASCD BRAKE SWITCH
EC-557
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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Always drive vehicle at a safe speed.
NOTE:
This procedure 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.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-558, "Diagnosis Procedure".
NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-II
With CONSULT-III
1. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure 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.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-558, "Diagnosis Procedure".
NO >> INSPECTION END
5.PERFORM COMPONENT FUNCTION CHECK
Perform component check. Refer to
Use component function check to check the overall function of the ASCD brake circuit. During this check, a 1st
trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-558, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000001705131
1.PERFORM COMPONENT FUNCTION CHECK-I
Without CONSSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
VHCL SPEED SE More than 30 km/h (19 mph)
Shift lever Suitable position
VHCL SPEED SE More than 30 km/h (19 mph)
Selector lever Suitable position
Driving locationDepress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned vehicle speed.
(+) (−)
Condition Voltage
Connector Terminal Connector Terminal
E16100
(ASCD brake switch signal)E16 108Brake pedal and/or
clutch pedalSlightly depressed Approx. 0V
Brake pedal and
clutch pedalFully released Battery voltage

Page 1907 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-558
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
NO >> Go to EC-558, "Diagnosis Procedure".
2.PERFORM COMPONENT FUNCTION CHECK-II
Without CONSSULT-III
Check voltage be

Page 1908 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-559
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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Is the inspection result normal?
YES >> GO TO 21.
NO >> GO TO 16.
3.CHECK ASCD BRAKE S

Page 1909 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-560
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
Refer to EC-562, "Component Inspection (ASCD Brake Switch)".
Is the inspection result normal?
YES >> GO TO 21.
NO >> R

Page 1910 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-561
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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NO >> Repair open circuit or short to ground or short to power in harness or connector

Page 1911 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-562
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
P1572 ASCD BRAKE SWITCH
18.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check the co

Page 1912 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-563
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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NO >> Replace ASCD brake switch.
Component Inspection (ASCD Clutch Switch)INFOID:00000

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