2007 NISSAN TIIDA Service Repair Manual

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Page 2281 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-932
< COMPONENT DIAGNOSIS >[MR18DE]
P1564 ASCD STEERING SWITCH
1. Check the continuity between ECM harness connector and ASCD steering switch.
2. Also check harness for short to ground and short to

Page 2282 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-933
< COMPONENT DIAGNOSIS >[MR18DE]
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P1572 ASCD BRAKE SWITCH
DescriptionINFOID:0000000001161913
When the brake pedal is depressed, ASCD brake

P1572 ASCD BRAKE SWITCH
EC-933
< COMPONENT DIAGNOSIS >[MR18DE]
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P1572 ASCD BRAKE SWITCH
DescriptionINFOID:0000000001161913
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-728, "
System Description" for the ASCD function.
DTC LogicINFOID:0000000001161914
DTC DETECTION LOGIC
NOTE:
If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-880, "
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.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 2.
2.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:
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.
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.)
Stop lamp switch
ASCD brake switch
ASCD clutch switch
Incorrect stop lamp switch installation
Incorrect ASCD brake switch installation
Incorrect ASCD clutch switch installation
ECM B)ASCD brake switch signal is not sent to
ECM for extremely long time while the ve-
hicle is driving.

Page 2283 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-934
< COMPONENT DIAGNOSIS >[MR18DE]
P1572 ASCD BRAKE SWITCH
5. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Go to EC-934, "Diagno

Page 2284 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-935
< COMPONENT DIAGNOSIS >[MR18DE]
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With CONSULT-III
Select “BRAKE SW2” and check indication in “DATA MONITOR” mode.
Without CONSU

Page 2285 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-936
< COMPONENT DIAGNOSIS >[MR18DE]
P1572 ASCD BRAKE SWITCH
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR

Page 2286 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-937
< COMPONENT DIAGNOSIS >[MR18DE]
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Is the inspection result normal?
YES >> GO TO 13.
NO >> GO TO 12.
12.DETECT MALFUNCTIONING PART
Check the

Page 2287 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-938
< COMPONENT DIAGNOSIS >[MR18DE]
P1572 ASCD BRAKE SWITCH
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK ASCD BRAKE SWITCH-II
1. Adjust ASCD brake switch installati

Page 2288 of 5883

NISSAN TIIDA 2007 Service Repair Manual P1572 ASCD BRAKE SWITCH
EC-939
< COMPONENT DIAGNOSIS >[MR18DE]
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Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-II
1. Adju

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