2008 NISSAN LATIO Service Repair Manual

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Page 1505 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P1421 COLD START CONTROL
EC-431
< SERVICE INFORMATION >
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EC
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3.CHECK FUEL INJECTION SYSTEM FUNCTION
Perform EC-257, "
DTC Confirmation Procedure" for DTC P0171

Page 1506 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-432
< SERVICE INFORMATION >
DTC P1564 ASCD STEERING SWITCH
DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000001702951
ASCD steering switch has variant values of electrical resistan

Page 1507 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P1564 ASCD STEERING SWITCH
EC-433
< SERVICE INFORMATION >
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EC
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DTC Confirmation ProcedureINFOID:0000000001702954
NOTE:
If DTC Confirmation Procedure has been previously

Page 1508 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-434
< SERVICE INFORMATION >
DTC P1564 ASCD STEERING SWITCH
Wiring Diagram
INFOID:0000000001702955
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

Page 1509 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P1564 ASCD STEERING SWITCH
EC-435
< SERVICE INFORMATION >
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Diagnosis ProcedureINFOID:0000000001702956
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loos

Page 1510 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-436
< SERVICE INFORMATION >
DTC P1564 ASCD STEERING SWITCH
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 94 and ground with press-
ing each button.
OK or NG

Page 1511 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P1564 ASCD STEERING SWITCH
EC-437
< SERVICE INFORMATION >
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OK >> GO TO 7.
NG >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M69

Page 1512 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-438
< SERVICE INFORMATION >
DTC P1572 ASCD BRAKE SWITCH
DTC P1572 ASCD BRAKE SWITCH
Component DescriptionINFOID:0000000001702958
When the brake pedal is depressed, ASCD brake switch (2) is
turned O

EC-438
< SERVICE INFORMATION >
DTC P1572 ASCD BRAKE SWITCH
DTC P1572 ASCD BRAKE SWITCH
Component DescriptionINFOID:0000000001702958
When the brake pedal is depressed, ASCD brake switch (2) is
turned OFF and stop lamp switch (1) is turned ON. ECM detects the
state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-28
for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000001702959
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001702960
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
•If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-397
.
•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.
BBIA0708E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ASCD brake switch)• Ignition switch: ON• Brake pedal: Fully released (A/T, CVT)
• Brake pedal and clutch pedal: Fully re-
leased (M/T)ON
• Brake pedal: Slightly depressed (A/T,
CVT)
• Brake pedal and/or clutch pedal: Slight-
ly depressed (M/T)OFF
BRAKE SW2
(Stop lamp switch)• Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P1572
1572ASCD brake switchA)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
(Stop lamp switch circuit is shorted.)
• Harness or connectors
(ASCD brake switch circuit is shorted.)
• Harness or connectors
(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 vehicle is
driving

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