2010 NISSAN LATIO air condition

EC-960
< SERVICE INFORMATION >[MR18DE]
DTC P2118 THROTTLE CONTROL MOTOR
Do not use ECM ground terminals when measuring input/output voltage. Doi
ng so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000000005532847
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten engine screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
TERMI-
NAL
NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
1L Throttle control motor
(Open) [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed Approximately 3.2 V
2SB Throttle contro
l motor power
supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
4 P Throttle contro l motor (Close)[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released Approximately 1.8 V
15 Y Throttle control motor relay [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
PBIA8150J
PBIA8149J
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: January 20102010 Versa

DTC P2122, P2123 APP SENSOREC-969
< SERVICE INFORMATION > [MR18DE]
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2. Perform
EC-580, "Accelerator Pedal Released Position Learning".
3. Perform EC-580, "
Throttle Valve Closed Position Learning".
4. Perform EC-580, "
Idle Air Volume Learning".
>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000005532860
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 110 (APP sensor 1 sig-
nal), 103 (APP sensor 2 signal) and ground under the following
conditions.
4. If NG, replace accelerator pedal assembly and go to next step.
5. Perform EC-580, "
Accelerator Pedal Released Position Learning".
6. Perform EC-580, "
Throttle Valve Closed Position Learning".
7. Perform EC-580, "
Idle Air Volume Learning".
Removal and InstallationINFOID:0000000005532861
ACCELERATOR PEDAL
Refer to ACC-4.
Terminal Accelerator pedal Voltage
11 0
(Accelerator pedal position
sensor 1) Fully released
0.6 - 0.9 V
Fully depressed 3.9 - 4.7 V
103
(Accelerator pe dal position
sensor 2) Fully released
0.3 - 0.6 V
Fully depressed 1.95 - 2.4 V
PBIA9572J
Revision: January 20102010 Versa

EC-976
< SERVICE INFORMATION >[MR18DE]
DTC P2127, P2128 APP SENSOR
3. Check voltage between ECM terminals 110 (APP sensor 1 sig-
nal), 103 (APP sensor 2 signal) and ground under the following
conditions.
4. If NG, replace accelerator pedal assembly and go to next step.
5. Perform EC-580, "
Accelerator Pedal Released Position Learning".
6. Perform EC-580, "
Throttle Valve Closed Position Learning".
7. Perform EC-580, "
Idle Air Volume Learning".
Removal and InstallationINFOID:0000000005532869
ACCELERATOR PEDAL
Refer to ACC-4.
Terminal Accelerator pedal Voltage
11 0
(Accelerator pedal position sensor 1) Fully released
0.6 - 0.9 V
Fully depressed 3.9 - 4.7 V
103
(Accelerator pedal position sensor 2) Fully released
0.3 - 0.6 V
Fully depressed 1.95 - 2.4 V
PBIA9572J
Revision: January 20102010 Versa

DTC P2135 TP SENSOREC-979
< SERVICE INFORMATION > [MR18DE]
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
Diagnosis ProcedureINFOID:0000000005532875
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT
TER- MI-
NAL NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
33 LG Throttle position sensor 1 [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released
More than 0.36 V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed Less than 4.75 V
34 O Throttle position sensor 2 [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed More than 0.36 V
36 Y Sensor ground
(Throttle position sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
72 V Sensor power supply
(Throttle position sensor) [Ignition switch: ON]
Approximately 5 V
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: January 20102010 Versa

EC-988
< SERVICE INFORMATION >[MR18DE]
DTC P2138 APP SENSOR
>>
INSPECTION END
11 .CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000005532884
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 110 (APP sensor 1 sig-
nal), 103 (APP sensor 2 signal) and ground under the following
conditions.
4. If NG, replace accelerator pedal assembly and go to next step.
5. Perform EC-580, "
Accelerator Pedal Released Position Learning".
6. Perform EC-580, "
Throttle Valve Closed Position Learning".
7. Perform EC-580, "
Idle Air Volume Learning".
Removal and InstallationINFOID:0000000005532885
ACCELERATOR PEDAL
Refer to ACC-4.
Terminal Accelerator pedal Voltage
11 0
(Accelerator pedal position
sensor 1) Fully released
0.6 - 0.9 V
Fully depressed 3.9 - 4.7 V
103
(Accelerator pedal position sensor 2) Fully released
0.3 - 0.6 V
Fully depressed 1.95 - 2.4 V
PBIA9572J
Revision: January 20102010 Versa

DTC P2A00 A/F SENSOR 1EC-989
< SERVICE INFORMATION > [MR18DE]
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DTC P2A00 A/F SENSOR 1
Component DescriptionINFOID:0000000005532886
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise m
easurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800 °C
(1,472 °F).
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005532887
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005532888
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted to LEAN side or RICH side.
DTC Confirmation ProcedureINFOID:0000000005532889
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
PBIB3353E
PBIB3354E
Monitor itemConditionSpecification
A/F SEN1 (B1) • Engine: After warming upMaintaining engine speed at
2,000 rpm Fluctuates around 2.2 V
DTC No. Trouble diagnosis name
DTC detecting conditionPossible Cause
P2A00
2A00 Air fuel ratio (A/F) sensor 1
circuit range/performance • The output voltage computed by ECM from the
A/F sensor 1 signal is shifted to the lean side for
a specified period.
• The A/F signal computed by ECM from the A/F
sensor 1 signal is shifted to the rich side for a
specified period. • Air fuel ratio (A/F) sensor 1
• Air fuel ratio (A/F) sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks
Revision: January 20102010 Versa

EC-992
< SERVICE INFORMATION >[MR18DE]
DTC P2A00 A/F SENSOR 1
Do not use ECM ground terminals when measuring input/output voltage. Doi
ng so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000000005532891
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1
Loosen and retighten the air fuel ratio (A/F) sensor 1. Refer to EM-140, "
Removal and Installation".
>> GO TO 3.
3.CHECK FOR INTAKE AIR LEAK
1. Start engine and run it at idle.
2. Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace.
TERMI- NAL
NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
3 G A/F sensor 1 heater [Engine is running]
•
Warm-up condition
• Idle speed (More than 140 seconds after starting
engine) Approximately 2.9 - 8.8 V
49 W A/F sensor 1 [Engine is running]
•
Warm-up condition
• Engine speed: 2,000 rpm Approximately 1.8 V
Output voltage varies with air fuel
ratio.
53 B A/F sensor 1 [Ignition switch: ON] Approximately 2.2 V
PBIA8148J
:Vehicle front
1. Body ground E24 2. Engine ground F93. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: January 20102010 Versa

EC-1002
< SERVICE INFORMATION >[MR18DE]
ASCD BRAKE SWITCH
• 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.
13.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 99 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 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
14.CHECK STOP LAMP SWITCH
Refer to EC-938, "
Component Inspection".
OK or NG
OK >> GO TO 15.
NG >> Replace stop lamp switch.
15.CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000005532897
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check continuity between ASCD brake switch terminals 1 and 2
under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-6
, and
perform step 3 again.
ASCD CLUTCH SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector. Continuity should exist.
Condition
Continuity
Brake pedal: Fully released. Should exist.
Brake pedal: Slightly depressed. Should not exist.
SEC023D
Revision: January 20102010 Versa