2011 NISSAN LATIO ignition

P1805 BRAKE SWITCHEC-383
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P1805 BRAKE SWITCH
DescriptionINFOID:0000000005930058
Brake switch signal is applied to the ECM through t
he stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
DTC LogicINFOID:0000000005930059
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase DTC. Refer to “SELF-DIAGNOSTIC RESULTS MODE”, “How to Erase Self diagnostic Results” in
EC-103, "
On Board Diagnosis Function" (Without CONSULT-III) or EC-106, "CONSULT-III Function" (With
CONSULT-III).
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-384, "Diagnosis Procedure".
NO >> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805 Brake switch A brake switch signal is not sent to ECM
for extremely long time while the vehicle is
driving. • Harness or connectors
(Stop lamp switch circuit is open or shorted.)
• Stop lamp switch
Revision: May 2010 2011 Versa

EC-384
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P1805 BRAKE SWITCH
Wiring Diagram
INFOID:0000000005930060
Diagnosis ProcedureINFOID:0000000005930061
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
AABWA0316GB
Revision: May 2010 2011 Versa

P1805 BRAKE SWITCHEC-385
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Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK STOP LAMP SWIT
CH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check the voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E7, M69
• 10 A fuse (No. 7)
• 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.
4.CHECK STOP LAMP SWITCH INPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check the continuity between ECM harness connector and stop lamp switch harness connector.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK STOP LAMP SWITCH
Refer to EC-386, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> GO TO 6.
Brake pedal Stop lamp
Fully released Not illuminated
Slightly depressed Illuminated
Stop lamp switch Ground Voltage
Connector Terminal
E13 1 Ground Battery voltage
PBIB2284E
ECM Stop lamp switch
Continuity
Connector Terminal Connector Terminal
E1699E13 2Existed
Revision: May 2010 2011 Versa

EC-386
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P1805 BRAKE SWITCH
NO >> Replace stop lamp switch. Refer to
BR-7, "Removal and Installation".
6.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
>> INSPECTION END
Component Inspection (Stop Lamp Switch)INFOID:0000000005930062
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. Refer to BR-7, "
Removal and Installation".
TerminalsCondition 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: May 2010
2011 Versa

P2100, P2103 THROTTLE CONTROL MOTOR RELAYEC-387
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P2100, P2103 THROTTLE CONTROL MOTOR RELAY
DescriptionINFOID:0000000005930063
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:0000000005930064
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-388, "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-388, "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: May 2010 2011 Versa

EC-388
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P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
Wiring Diagram
INFOID:0000000005930065
Diagnosis ProcedureINFOID:0000000005930066
1.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
AABWA0313GB
Revision: May 2010 2011 Versa

P2100, P2103 THROTTLE CONTROL MOTOR RELAYEC-389
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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: May 2010
2011 Versa

P2101 ELECTRIC THROTTLE CONTROL FUNCTIONEC-391
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P2101 ELECTRIC THROTTLE CONTROL FUNCTION
DescriptionINFOID:0000000005930067
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:0000000005930068
DTC DETECTION LOGIC
NOTE:
• If DTC P2101 is displayed with DT C P2100, first perform the trouble diagnosis for DTC P2100. Refer
to EC-387, "
DTC Logic".
• If DTC P2101 is displayed with DTC P2119, first pe rform the trouble diagnosis for DTC P2119. Refer
to EC-400, "
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-392, "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: May 2010 2011 Versa