NISSAN LATIO 2011 Service Repair Manual

INTELLIGENT KEY SYSTEMBL-121
< SERVICE INFORMATION >
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NON-DTC ITEM
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnoses/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)
• Intelligent Key is registered.
• Multiple mechanical keys are not set in a keyfob. (If mechanical keys are near the ignition switch, the operation may not work properly.)
ENGINE START CONDITION CHECK
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• If the following “symptoms” are detected, check syst ems shown in the ”Diagnoses/service procedure” col-
umn in this order.
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• “ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are ON when setting on CONSULT-III.
• Mechanical key is out of ignition switch.
• Ignition switch is not depressed.
• All doors are closed.
• Intelligent key is registered.
RED key warning lamp does not illuminate
[Without Intelligent Key]. 1. Check "KEY" warning lamp (RED).
BL-155
2. Replace Intelligent Key unit.BL-158
SymptomDiagnosis/service procedureReference page
SymptomDiagnosis/service procedure Reference page
Non DTC Item 1. Check key switch.
BL-127
2. Check NATS antenna amp.BL-246
SymptomDiagnosis/service procedure Reference page
Engine start condition check 1. Check CVT or A/T shift selector (park position switch).
(with CVT or A/T) BL-153
2. Check key interlock solenoid (with M/T).
BL-149
3. Check stop lamp switch (with CVT or A/T).BL-150
4. Check stop lamp switch (with M/T).BL-152
Revision: May 2010 2011 Versa

BL-122
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
DOOR LOCK/UNLOCK FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check system s shown in the “Diagnosis/procedure” column in this
order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• Mechanical key is out of ignition switch.
• Ignition switch is not depressed.
• All doors are closed.
• Intelligent Key is registered.
REMOTE KEYLESS ENTRY FUNCTION MALFUNCTION
Symptom Diagnosis/service procedureReference page
All function of Intelligent Key system dose not
operate. 1. Check Intelligent Key unit power supply and ground
circuit. BL-126
2. Check Intelligent Key battery inspection.
BL-158
3. Replace Intelligent Key unit.BL-158
SymptomDiagnosis/service procedureReference page
Door lock/unlock does not operate by all request
switches. 1. Check door switch (hatchback).
BL-131
2. Check door switch (sedan).BL-134
3. Check key switch.BL-127
4. Check ignition knob switch.BL-129
5. Replace Intelligent Key unit.BL-158
Door lock/unlock does not operate by request
switch (driver side).1. Check door request switch (driver side).
BL-1352. Check outside key antenna (driver side).BL-143
3. Replace Intelligent Key unit.BL-158
Door lock/unlock does not operate by request
switch (passenger side).1. Check door request switch (passenger side).
BL-1352. Check outside key antenna (passenger side).BL-143
3. Replace Intelligent Key unit.BL-158
Door lock/unlock does not operate by back door
request switch (hatchback).1. Check back door request switch.
BL-1372. Check outside key antenna (rear bumper).BL-144
3. Replace Intelligent Key unit.BL-158
Door lock/unlock does not operate by trunk
opener request switch (sedan).1. Check trunk opener request switch.
BL-1382. Check outside key antenna (rear bumper).BL-144
3. Replace Intelligent Key unit.BL-158
Auto lock function does not operate.1. Check “AUTO RELOCK TI
MER” setting in “WORK
SUPPORT”. BL-117
2. Replace Intelligent Key unit.
BL-158
Key reminder function does not operate.1. Check door switch (hatchback).
BL-131
2. Check door switch (sedan).BL-134
3. Check inside key antenna.BL-146
4. Check unlock sensor.BL-140
5. Check Intelligent Key battery.BL-158
6. Replace Intelligent Key unit.BL-158
Revision: May 2010 2011 Versa

INTELLIGENT KEY SYSTEMBL-123
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NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Ignition switch is not depressed.
• All doors are closed.
HAZARD AND BUZZER REMINDER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Ignition switch is not depressed.
• All doors are closed.
Symptom Diagnosis/service procedure Reference
page
All of the remote keyless entry functions do
not operate. 1. Check Intelligent Key unit power supply and ground circuit.
BL-126
2. Check key switch (BCM input).BL-128
3. Check Intelligent Key battery.BL-158
4. Remote Keyless Entry function inspection.BL-158
5. Replace Intelligent Key unit.BL-158
Auto lock function does not operate.1. Check “AUTO RELOCK TIMER”
setting in “WORK SUPPORT”. BL-1172. Replace Intelligent Key unit. BL-158
Key reminder function does not operate.1. Check door switch (hatchback).
BL-131
2. Check door switch (sedan).BL-134
3. Check inside key antenna.BL-146
4. Check unlock sensor.BL-140
5. Check Intelligent Key battery.BL-158
6. Replace Intelligent Key unit.BL-158
Panic alarm function does not operate.1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.
BL-117
2. Check Intelligent Key battery inspection.BL-158
3. Check horn function.BL-157
4. Check headlamp function.BL-157
5. Check key switch.BL-127
6. Check ignition knob switch.BL-129
7. Replace Intelligent Key unit.BL-158
SymptomDiagnosis/service procedure Reference page
Hazard reminder does not operate by request
switch.
(Buzzer reminder operate). 1. Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. BL-117
2. Check hazard function with hazard switch.
BL-156
3. Replace Intelligent Key unit.BL-158
Revision: May 2010 2011 Versa

BL-124
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
WARNING CHIME/BUZZER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
Warning chime/buzzer functions operating condition is extremely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation.
Buzzer reminder does
not operate by request
switch.
(Hazard reminder oper-
ates). Intelligent Key
warning buzzer
does not operate.1. Check “ANSER BACK WITH I-KEY LOCK” or “ANSER
BACK WITH I-KEY UNLOCK” setting in “WORK SUP-
PORT”. BL-117
2. Check Intelligent Key warning buzzer(s).
BL-142
3. Replace Intelligent Key unit.BL-158
Hazard reminder does not operate by Intelli-
gent Key (door lock/unlock button).
(Buzzer reminder operates properly).1. Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. BL-117
2. Check hazard function with hazard switch.
BL-156
3. Replace Intelligent Key.BL-158
Buzzer reminder does
not operate by Intelligent
Key (door lock/unlock
button).
(Hazard reminder oper-
ates).Intelligent Key
warning buzzer
does not operate.1. Check “HORN WITH KEYLESS LOCK” setting in “WORK
SUPPORT”. BL-117
2. Check Intelligent Key warning buzzer(s).
BL-142
3. Replace Intelligent Key unit.BL-158
SymptomDiagnosis/service procedure Reference page
Symptom Diagnosis/service procedureReference page
Ignition switch warning chime does not oper-
ate. 1. Check ignition knob switch.
BL-129
2. Check door switch (hatchback).BL-131
3. Check door switch (sedan).BL-134
4. Check key switch.BL-127
5. Check Intelligent Key warning chime.BL-156
6. Replace Intelligent Key unit.BL-158
Ignition key warning chime does not operate.
(When mechanical key used).1. Check key switch (Intelligent Key unit input).
BL-127
2. Check key switch (BCM input).BL-128
3. Check door switch (hatchback).BL-131
4. Check door switch (sedan).BL-134
5. Check Intelligent Key warning chime.BL-156
6. Replace Intelligent Key unit.BL-158
OFF position warning chime (For internal)
does not operate.1. Check ignition switch position.
BL-150
2. Check ignition knob switch.BL-129
3. Check key switch.BL-127
4. Check combination meter warning chime.BL-156
5. Replace Intelligent Key unit.BL-158
Revision: May 2010 2011 Versa

INTELLIGENT KEY SYSTEMBL-125
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WARNING LAMP FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
115, "Trouble Diagnosis Procedure".
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
OFF position warning
chime/buzzer (for ex-
ternal) does not oper-
ate. Both Intelligent Key
warning chime and
buzzer do not oper-
ate.1. Check ignition switch position.
BL-150
2. Check ignition knob switch.BL-129
3. Check key switch.BL-127
4. Check Intelligent Key warning chime.BL-156
5. Check Intelligent Key warning buzzer(s). BL-142
6. Replace Intelligent Key unit. BL-158
Intelligent Key warn-
ing buzzer does not
operate.Check Intelligent Key warning buzzer(s).
BL-142
Take away warning
chime/buzzer (door
open to close) does
not operate.Both Intelligent Key
warning chime and
buzzer do not oper-
ate.1. Check door switch (hatchback).
BL-131
2. Check door switch (sedan).BL-134
3. Check inside key antenna.BL-146
4. Check key switch.BL-127
5. Check Intelligent Key warning chime.BL-142
6. Check Intelligent Key warning buzzer(s). BL-142
7. Replace Intelligent Key unit. BL-158
Intelligent Key warn-
ing buzzer does not
operate.Check Intelligent Key warning buzzer(s).
BL-142
Take away warning chime (through window)
does not operate.1.
Check “TAKE OUT FROM WINDOW WARN” setting in
“WORK SUPPORT”.
BL-117
2. Check inside key antenna.
BL-146
3. Check key switch.BL-127
4. Check Intelligent Key battery.BL-158
5. Check Intelligent Key warning chime.BL-156
6. Replace Intelligent Key unit.BL-158
Door lock operation warning buzzer does not
operate.1. Check door switch (hatchback).
BL-131
2. Check door switch (sedan).BL-134
3. Check ignition knob switch.BL-129
4. Check door request switch.BL-135
5. Check back door request switch (hatchback).BL-137
6. Check trunk opener request switch (sedan).BL-138
7. Check outside key antenna (driver side and passenger side).BL-143
8. Check outside key antenna (rear bumper).BL-144
9. Check inside key antenna.BL-146
10. Check Intelligent Key warning buzzer(s). BL-142
11. Replace Intelligent Key unit.BL-158
One warning buzzer does not operate (se-
dan).Check Intelligent Key warning buzzer(s).
BL-142
SymptomDiagnosis/service procedureReference page
Revision: May 2010 2011 Versa

BL-126
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
CAN Communication System Inspection
INFOID:0000000005929341
1.CHECK SELF-DIAGNOSTIC RESULTS
With CONSULT-III
• Connect CONSULT-III, and turn ignition switch ON.
• Touch “INTELLIGENT KEY” on “SELECT SYSTEM” screen.
• Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
• Check display content in self-diagnostic results.
OK or NG
NO DTC IS DETECT ED>> Inspection End.
CAN COMM [U1000]>> After printing “SELF-DIAGNOSI S RESULTS”, go to “CAN SYSTEM”. Refer to LAN-
17, "Trouble Diagnosis Flow Chart".
CAN COMM2 [U1010] >> Replace Intelligent Key unit. Refer to BL-158, "
Removal and Installation of Intelli-
gent Key Unit".
Power Supply and Ground Circuit InspectionINFOID:0000000005929342
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector and ground.
Symptom Diagnosis/service procedureReference page
When Intelligent Key low batt ery warning operate, “KEY”
warning lamp (green) does not illuminate. 1.
Check “LOW BAT OF KEY FOB WARN” setting
in “WORK SUPPORT”. BL-117
2. Check Intelligent Key battery.
BL-158
3. Check KEY warning lamp (green).BL-155
4. Replace Intelligent Key unit.BL-158
P position warning lamp does not illuminate properly.
(With CVT or A/T)1.
Check CVT or A/T shift selector (park position
switch). BL-153
2. Check “P-SHIFT” warning lamp (red).
BL-154
3. Replace Intelligent Key unit.BL-158
LOCK warning lamp does not illuminate properly.
(With M/T)1. Check key interlock solenoid.
BL-1492. Check "LOCK" warning lamp.BL-155
3. Replace Intelligent Key unit.BL-158
Take away warning lamp does not illuminate properly.
(Take away warning chime is operated).1. Check KEY warning lamp (red).
BL-158
2. Replace Intelligent Key unit.BL-158
Ignition switch warning lamp does not illuminate properly.
(Ignition switch warning chime is operated).1. Check KEY warning lamp (red).
BL-155
2. Replace Intelligent Key unit.BL-158
CONSULT-III display item DTC code
NO DTC IS DETECTED —
CAN COMM U1000
CAN COMM2 U1010
Revision: May 2010 2011 Versa

INTELLIGENT KEY SYSTEMBL-127
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OK or NG
OK >> GO TO 2
NG >> Repair or replace Intelligent Key power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit harness connector and ground.
OK or NG
OK >> Power supply and ground circuits are OK.
NG >> Repair or replace the Intelligent Key unit ground circuit.
Key Switch (Intelligent Key Unit Input) CheckINFOID:0000000005929343
1.CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-III
Check key switch (“KEY SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit and ground.
OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2
2.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
Te r m i n a l s
Voltage (V)(Approx.)
(+)
(–)
Intelligent Key unit
connector Te r m i n a l
M52 11Ground Battery voltage
PIIB6595E
Intelligent Key unit connector Terminal
GroundContinuity
M52 12 Yes
PIIB6596E
Monitor item Condition
KEY SW Insert mechanical key into ignition switch: ON
Remove mechanical key from ignition switch: OFF
Te r m i n a l s
Condition of key switch Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key
unit connector Te r m i n a l
M52 7 Ground Insert mechanical key
into ignition switch
Battery voltage
Remove mechanical
key from ignition switch 0
PIIB6597E
Revision: May 2010
2011 Versa

BL-128
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
3. Check voltage between key switch and ignition knob switch and ground.
OK or NG
OK >> GO TO 3
NG >> Repair or replace key switch and ignition knob switchpower supply circuit.
3.CHECK KEY SWITCH
Check continuity of key switch and ignition knob switch.
OK or NG
OK >> GO TO 4
NG >> Replace key cylinder assembly (built-in key switch).
4.CHECK KEY SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit and key switch and ignition knob switch.
3. Check continuity between Intelligent Key unit and ground.
OK or NG
OK >> Check the condition of harness and harness connector.
NG >> Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.
Key Switch (BCM Input) CheckINFOID:0000000005929344
1.CHECK KEY SWITCH PO WER SUPPLY CIRCUIT
Te r m i n a l s
Voltage (V)(Approx.)
(+)
(–)
Key switch and ig-
nition knob switch
connector Te r m i n a l
M73 2Ground Battery voltage
PIIB6598E
Te r m i n a l
Condition of key switch Continuity
Key switch and ignition knob switch
12 Insert mechanical key into
ignition switch Ye s
Remove mechanical key from ignition switch No
PIIB6599E
AB
Continuity
Intelligent Key unit
connector Te r m i n a lKey switch and ig-
nition knob switch connector Te r m i n a l
M52 7M73 1Yes
A GroundContinuity
Intelligent Key unit connector Terminal
M52 7 No
PIIB6600E
Revision: May 2010 2011 Versa

INTELLIGENT KEY SYSTEMBL-129
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1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch and
ground.
OK or NG
OK >> GO TO 2
NG >> Check harness between key switch and ignition knob switch and fuse.
2.CHECK KEY SWITCH OPERATION
Check continuity of key switch and ignition knob switch.
OK or NG
OK >> GO TO 3
NG >> Replace key cylinder assembly (built-in key switch).
3.CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM connector (A) M18 terminal 37 and key switch and ignition knob switch
connector (B) terminal 1.
3. Check continuity between BCM connector (A) M18 terminal 37 and ground.
OK or NG
OK >> Key switch (BCM input) circuit is OK.
NG >> Repair or replace harness between key switch and ignition knob switch and BCM.
Ignition Knob Switch CheckINFOID:0000000005929345
1.CHECK IGNITION KNOB SWITCH INPUT SIGNAL
With CONSULT-III
Te r m i n a l s
Voltage (V)(Approx.)
(+)
(–)
Key switch and ig-
nition knob switch
connector Te r m i n a l
M73 2Ground Battery voltage
PIIB6598E
Te r m i n a l
Condition of key switch Continuity
Key switch and ignition knob switch
12 Insert mechanical key into
ignition switch Ye s
Remove mechanical key from ignition switch No
PIIB6599E
AB
Continuity
BCM connector Terminal Key switch and ig-
nition knob switch connector Te r m i n a l
M18 37M73 1Yes
A GroundContinuity
BCM connector Terminal
M18 37 No
PIIB6601E
Revision: May 2010 2011 Versa

BL-130
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
Display “PUSH SW” on DATA MONITOR screen, and check if ON/OFF display is linked to ignition switch oper-
ation.Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit and ground.
OK or NG
OK >> Ignition knob switch circuit is OK.
NG >> GO TO 2
2.CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch and ground.
OK or NG
OK >> GO TO 3
NG >> Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK IGNITION KNOB SWITCH
Check continuity of ignition knob switch.
OK or NG
OK >> GO TO 4
NG >> Replace key switch and ignition knob switch.
Monitor item Condition
PUSH SW Ignition switch is pressed: ON
Ignition switch is released: OFF
Te r m i n a l s
Condition of key switch Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key unit
connector Te r m i n a l
M52 27 Ground Ignition switch is
pressed Battery voltage
Ignition switch is released 0
PIIB6602E
Te r m i n a l s
Voltage (V)(Approx.)
(+)
(–)
Key switch and ig-
nition knob switch
connector Te r m i n a l
M73 4Ground Battery voltage
PIIB6603E
Te r m i n a l
Condition of key
switch Continuity
Key switch and ignition knob switch
34 Ignition switch is
pressed Ye s
Ignition switch is released No
PIIB6604E
Revision: May 2010
2011 Versa