NISSAN LATIO 2010 Service Repair Manual

EC-376
< COMPONENT DIAGNOSIS >[HR16DE]
P1805 BRAKE SWITCH
NO >> Replace stop lamp switch.
6.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
>> INSPECTION END
Component Inspection (Stop Lamp Switch)INFOID:0000000005398547
1.CHECK STOP LAMP SWITCH-I
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check the continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-II
1. Adjust stop lamp switch installation. Refer to BR-6, "
Inspection and Adjustment".
2. Check the continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace stop lamp switch.
Terminals Condition Continuity
1 and 2 Brake pedal Fully released Not existed
Slightly depressed Existed
PBIB2285E
Terminals
Condition Continuity
1 and 2 Brake pedal Fully released Not existed
Slightly depressed Existed
PBIB2285E
Revision: January 20102010 Versa

P2100, P2103 THROTTLE CONTROL MOTOR RELAYEC-377
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P2100, P2103 THROTTLE CONTROL MOTOR RELAY
DescriptionINFOID:0000000005398548
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and batte
ry voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
DTC LogicINFOID:0000000005398549
DTC DETECTION LOGIC
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.
TESTING CONDITION:
Before performing the following procedure, c onfirm that battery voltage is more than 8 V.
Witch DTC is detected?
P2100 >> GO TO 2.
P2103 >> GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2100
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-378, "Diagnosis Procedure".
NO >> INSPECTION END
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103
1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-378, "Diagnosis Procedure".
NO >> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2100 Throttle control motor
relay circuit open ECM detects a voltage of power source for
throttle control motor is excessively low. • Harness or connectors
(Throttle control motor relay circuit is
open)
• Throttle control motor relay
P2103 Throttle control motor
relay circuit short ECM detect the throttle control motor relay is
stuck ON. • Harness or connectors
(Throttle control motor relay circuit is
shorted)
• Throttle control motor relay
Revision: January 20102010 Versa

EC-378
< COMPONENT DIAGNOSIS >[HR16DE]
P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
Wiring Diagram
INFOID:0000000005398550
Diagnosis ProcedureINFOID:0000000005398551
1.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
AABWA0313GB
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P2100, P2103 THROTTLE CONTROL MOTOR RELAYEC-379
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2. Check the voltage between ECM harness connector and
ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUSE
1. Disconnect 15 A fuse (No. 52) from IPDM E/R.
2. Check 15 A fuse for blown.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace 15 A fuse.
5.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check the voltage between ECM harness connector and ground
under the following conditions.
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
6.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
ECM Ground Voltage
Connector Terminal
F10 15 Ground Battery voltage
PBIA9569J
ECM IPDM E/R
Continuity
Connector Terminal Connector Terminal
F10 15 E46 46 Existed
ECM Ground Condition Voltage
Connector Terminal
F10 2 Ground Ignition switch: OFF Approximately 0 V
Ignition switch: ON Battery voltage
PBIA9568J
Revision: January 20102010 Versa

EC-380
< COMPONENT DIAGNOSIS >[HR16DE]
P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
4. Check the continuity between ECM harnes s connector and IPDM E/R harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
ECM IPDM E/R
Continuity
Connector Terminal Connector Terminal
F10 2 E43 8 Existed
Revision: January 20102010 Versa

P2101 ELECTRIC THROTTLE CONTROL FUNCTIONEC-381
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P2101 ELECTRIC THROTTLE CONTROL FUNCTION
DescriptionINFOID:0000000005398552
Electric throttle control actuator consists of throttle control mo
tor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM. ECM controls the throttle valve opening angle in response to driving condition via the throttle
control motor.
DTC LogicINFOID:0000000005398553
DTC DETECTION LOGIC
NOTE:
• If DTC P2101 is displayed with DT C P2100, first perform the trouble diagnosis for DTC P2100. Refer
to EC-377, "
DTC Logic".
• If DTC P2101 is displayed with DTC P2119, first pe rform the trouble diagnosis for DTC P2119. Refer
to EC-390, "
DTC Logic".
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V when
engine is running.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-382, "Diagnosis Procedure".
NO >> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2101 Electric throttle control
performance Electric throttle control function does not
operate properly. • Harness or connectors
(Throttle control motor circuit is open or shorted)
• Electric throttle control actuator
Revision: January 20102010 Versa

EC-382
< COMPONENT DIAGNOSIS >[HR16DE]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
Wiring Diagram
INFOID:0000000005398554
Diagnosis ProcedureINFOID:0000000005398555
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections E15, E24. Refer to EC-119, "
Ground Inspection".
Is the inspection result normal?
AABWA0312GB
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P2101 ELECTRIC THROTTLE CONTROL FUNCTIONEC-383
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YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK THROTTLE CONTROL MOTOR
RELAY INPUT SIGNAL CIRCUIT-I
1. Check the voltage between ECM harness connector and ground under the following conditions.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 3.
3.CHECK THROTTLE CONTROL MOTO R RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Check the continuity between ECM harness connector and IPDM E/R harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
ECM Ground Condition Voltage
Connector Terminal
F10 2 Ground Ignition switch: OFF Approx. 0 V
Ignition switch: ON Battery voltage
PBIA9568J
IPDM E/R
ECM
Continuity
Connector Terminal Connector Terminal
E46 46F10 15 Existed
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E43 8F10 2 Existed
Revision: January 20102010 Versa

EC-384
< COMPONENT DIAGNOSIS >[HR16DE]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
7.CHECK FUSE
1. Disconnect 15 A fuse (No. 52) from IPDM E/R.
2. Check 15 A fuse for blown.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace 15 A fuse.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
9.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace.
10.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve (1) and the housing.
- Electric throttle control actuator (2)
Is the inspection result normal?
YES >> GO TO 11.
NO >> Remove the foreign matter and clean the electric throttle control actuator inside.
11 .CHECK THROTTLE CONTROL MOTOR
Refer to EC-385, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 13.
12.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 13.
Electric throttle control actuator ECM
Continuity
Connector Terminal Connector Terminal
F7 5
F10 1 Not existed
4E
xis te d
6 1E
xis te d
4 Not existed
JMBIA0447ZZ
Revision: January 20102010 Versa

P2101 ELECTRIC THROTTLE CONTROL FUNCTIONEC-385
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NO >> Repair or replace harness or connectors.
13.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace malfunction electric throttle control actuator.
2. Perform EC-385, "
Special Repair Requirement".
>> INSPECTION END
Component InspectionINFOID:0000000005398556
1.CHECK THROTTLE CONTROL MOTOR
1. Turn ignition switch OFF.
2. Disconnect electric throttle c ontrol actuator harness connector.
3. Check the resistance between electric throttle control actuator terminals as per the following.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Perform EC-385, "
Special Repair Requirement".
>> INSPECTION END
Special Repair RequirementINFOID:0000000005398557
1.PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Refer to EC-25, "
THROTTLE VALVE CLOSED POSITION L EARNING : Special Repair Requirement"
>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-26, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
Terminals Resistance
5 and 6 Approx. 1 - 15 Ω [at 25 °C (77 °F)]
PBIB2909E
Revision: January 20102010 Versa