2008 NISSAN LATIO ignition

INTELLIGENT KEY SYSTEM
BL-141
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
2.CHECK IPDM E/R INPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and
Installation of IPDM E/R".
NG >> GO TO 3.
3.CHECK HORN RERAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R harness connector and
horn relay harness connector.
4. Check continuity between IPDM E/R harness connector and
ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Repair or replace harness.
Headlamp Function CheckINFOID:0000000001704041
1.CHECK HEADLAMP OPERATION
Check if headlamps operate by lighting switch.
Do headlamps come on when turning lighting switch ON?
YES >> Headlamp circuit is OK.
NO >> Check headlamp system. Refer to LT- 4
or LT- 2 5.
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
IPDM E/R
connectorTe r m i n a l
E46 45 Ground Battery voltage
WIIA1251E
AB
Continuity
IPDM E/R
connectorTe r m i n a lHorn relay
connectorTe r m i n a l
E46 45 H-1 1 Yes
A
GroundContinuity
IPDM E/R connector Terminal
E46 45 No
WIIA1252E

BACK DOOR LOCK
BL-159
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
CONSULT-III Function (BCM)INFOID:0000000001704056
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-III APPLICATION ITEMS
Data Monitor
* : With Intelligent Key system
** : Without Intelligent Key system
Active Test
Work FlowINFOID:0000000001704057
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-156, "
System Description".
3. Repair or replace any malfunctioning parts. Refer to BL-159, "
Trouble Diagnosis Chart by Symptom".
4. Does back door opener operate normally? If Yes, GO TO 5. If No, GO TO 3.
5. INSPECTION END
Trouble Diagnosis Chart by SymptomINFOID:0000000001704058
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Monitor item Content
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
KEYLESS TRUNK** This is displayed even when it is not equipped.
I-KEY TRUNK* Momentarily indicates [ON/OFF] condition of back door open signal from back door opener switch.
TRNK OPNR SW** Indicates [ON/OFF] condition of back door open signal from back door opener switch.
VEHICLE SPEED This is displayed even when it is not equipped.
Test item Content
TRUNK/BACK DOORThis test is able to check back door lock assembly (actuator) unlock operation.
Actuator opens back door lock assembly when “OPEN” on CONSULT-III screen is touched.
Symptom Diagnoses/service procedureReference
page
Back door opener does not operate.
(Without Intelligent Key or power windows)1. Check BCM power supply and ground circuit.BCS-15
2. Check back door opener switch circuit.BL-160
3. Check back door lock assembly (actuator) circuit.BL-166
4. Replace BCM.BCS-18

BL-160
< SERVICE INFORMATION >
BACK DOOR LOCK
BCM Power Supply and Ground Circuit
INFOID:0000000001704059
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Check Back Door Opener Switch Circuit (Without Intelligent Key or Power Windows)
INFOID:0000000001704060
1.CHECK BACK DOOR OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check back door opener switch (“TRNK OPNR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK BACK DOOR OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect BCM and back door opener switch connector.
3. Check continuity between BCM connector (A) M18 terminal 30 and back door opener switch connector
(B) terminal 1.
Back door opener does not operate.
(Without Intelligent Key, with power windows)1. Check BCM power supply and ground circuit.BCS-152. Check back door opener switch circuit.BL-162
3. Check back door lock assembly (actuator) circuit.BL-166
4. Replace BCM.BCS-18
Back door opener does not operate.
(With Intelligent Key)1. Check BCM power supply and ground circuit.BCS-15
2.Check Intelligent Key power supply and ground cir-
cuit.BL-110
3. Check back door opener switch circuit.BL-165
4. Check back door lock assembly (actuator) circuit.BL-166
5. Replace BCM.BCS-18
Symptom Diagnoses/service procedureReference
page
Test item Condition
TRNK OPNR SWBack door opener switch is pushed: ON
Back door opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–)
BCM
connectorTe r m i n a l
M18 30 GroundBack door
opener switchPushed 0
Released Battery voltage
PIIB6468E

BACK DOOR LOCK
BL-163
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK BACK DOOR OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect BCM and back door opener switch connector.
3. Check continuity between BCM connector (A) M18 terminal 30 and back door opener switch connector
(B) terminal 1.
4. Check continuity between BCM connector (A) M18 terminal 30
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK BACK DOOR OPENER SWITCH
Check continuity between back door opener switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace back door opener switch.
4.CHECK BACK DOOR OPENER SWITCH CIRCUIT 2
1. Disconnect front door lock actuator RH (door unlock sensor) connector.
2. Check continuity between back door opener switch connector (A) D408 terminal 2 and front door lock
actuator RH (door unlock sensor) connector (B) D114 terminal 4.
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–)
BCM
connectorTe r m i n a l
M18 30 GroundBack door
opener switchPushed 0
Released Battery voltage
PIIB6468E
AB
Continuity
BCM connector TerminalBack door opener
switch connectorTe r m i n a l
M18 30 D408 1 Yes
A
GroundContinuity
BCM connector Terminal
M18 30 No
PIIB6469E
Te r m i n a l
Back door opener
switch conditionContinuity
Back door opener switch
12Pushed Yes
Released No
PIIB6470E

BACK DOOR LOCK
BL-165
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, "
Removal and Installa-
tion of BCM".
Check Back Door Opener Switch Circuit (With Intelligent Key)INFOID:0000000001704062
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
With CONSULT-III
Check back door opener switch (“I-KEY TRNK”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between Intelligent Key unit connector M52 terminal
24 and ground.
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK BACK DOOR OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and back door opener switch connector.
3. Check continuity between Intelligent Key unit connector (A) M52 terminal 24 and back door opener switch
connector (B) terminal 1.
4. Check continuity between Intelligent Key unit connector (A) M52
terminal 24 and ground.
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage
PIIB6468E
Test item Condition
I-KEY TRNKBack door opener switch is pushed: ON (momentarily)
Back door opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–) Intelligent
Key unit
connectorTe r m i n a l
M52 24 GroundBack door
opener switchPushed 0
Released 5
WIIA1279E
AB
Continuity
Intelligent Key unit
connectorTe r m i n a lBack door opener
switch connectorTe r m i n a l
M52 24 D408 1 Yes
A
GroundContinuity
Intelligent Key unit connector Terminal
M52 24 No
WIIA1280E

BACK DOOR LOCK
BL-167
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
1. Turn ignition switch OFF.
2. Insure both front door lock knobs are turned to the UNLOCK position.
3. Disconnect back door lock assembly (actuator) connector.
4. Check voltage between back door lock assembly (actuator) connector D405 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3.CHECK BACK DOOR LOCK ASSEMBLY (ACTUATOR) GROUND CIRCUIT
Check continuity between back door lock assembly (actuator) con-
nector D405 terminal 2 and ground.
OK or NG
OK >> Replace back door lock assembly (actuator). Refer to
BL-156
.
NG >> Repair or replace harness.
4.CHECK BACK DOOR LOCK ASSEMBLY (ACTUATOR) CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM connector (A) M19 terminal 53 and back door lock assembly (actuator)
connector (B) D405 terminal 1.
3. Check continuity between BCM connector (A) M19 terminal 53
and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between BCM and back door lock assembly (actuator).
5.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector M19 terminal 53 and ground.
Te r m i n a l s
ConditionVoltage (V)
(Approx.) (+)
(–) Back door
lock as-
sembly (ac-
tuator)
connectorTe r m i n a l
D405 1 GroundBack door
opener switchPushed0
↓
Battery voltage
↓
0
Released 0
WIIA1275E
Back door lock assembly (actua-
tor) connectorTe r m i n a l
GroundContinuity
D405 2 Yes
WIIA1276E
AB
Continuity
BCM connector TerminalBack door opener
actuator connectorTe r m i n a l
M19 53 D405 1 Yes
BCM connector Terminal
GroundContinuity
M19 53 No
WIIA1277E

BL-176
< SERVICE INFORMATION >
TRUNK LID OPENER
CONSULT-III Function (BCM)
INFOID:0000000001704074
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-III APPLICATION ITEMS
Data Monitor
* : With Intelligent Key system
** : Without Intelligent Key system
Active Test
Work FlowINFOID:0000000001704075
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-173, "
System Description".
3. Repair or replace any malfunctioning parts. Refer to BL-176, "
Trouble Diagnosis Chart by Symptom".
4. Does trunk lid opener operate normally? If Yes, GO TO 5. If No, GO TO 3.
5. INSPECTION END
Trouble Diagnosis Chart by SymptomINFOID:0000000001704076
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Monitor item Content
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
KEYLESS TRUNK** This is displayed even when it is not equipped.
I-KEY TRUNK* Momentarily indicates [ON/OFF] condition of trunk open signal from trunk lid opener switch.
TRNK OPNR SW Indicates [ON/OFF] condition of trunk open signal from trunk lid opener switch.
VEHICLE SPEED This is displayed even when it is not equipped.
Test item Content
TRUNK/BACK DOORThis test is able to check trunk lid lock assembly (actuator) unlock operation.
Actuator opens trunk lid lock assembly when “OPEN” on CONSULT-III screen is touched.
Symptom Diagnoses/service procedureReference
page
Trunk lid opener does not operate.
(Without Intelligent Key or power windows)1. Check BCM power supply and ground circuit.BCS-15
2. Check trunk lid opener switch circuit.BL-177
3. Check trunk lid lock assembly (actuator) circuit.BL-183
4. Replace BCM.BCS-18

TRUNK LID OPENER
BL-177
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
BCM Power Supply and Ground CircuitINFOID:0000000001704077
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Check Trunk Lid Opener Switch Circuit (Without Intelligent Key or Power Windows)
INFOID:0000000001704078
1.CHECK TRUNK LID OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check trunk lid opener switch (“TRNK OPNR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
OK or NG
OK >> Trunk lid opener switch is OK.
NG >> GO TO 2.
2.CHECK TRUNK LID OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect BCM and trunk lid opener switch connector.
3. Check continuity between BCM connector (A) M18 terminal 30 and trunk lid opener switch connector
B128 (B) terminal 1.
Trunk lid opener does not operate.
(Without Intelligent Key, with power windows)1. Check BCM power supply and ground circuit.BCS-152. Check trunk lid opener switch circuit.BL-179
3. Check trunk lid lock assembly (actuator) circuit.BL-183
4. Replace BCM.BCS-18
Trunk lid opener does not operate.
(With Intelligent Key)1. Check BCM power supply and ground circuit.BCS-15
2.Check Intelligent Key power supply and ground cir-
cuit.BL-110
3. Check trunk lid opener switch circuit.BL-182
4. Check trunk lid lock assembly (actuator) circuit.BL-183
5. Replace BCM.BCS-18
Symptom Diagnoses/service procedureReference
page
Test item Condition
TRNK OPNR SWTrunk lid opener switch is pushed: ON
Trunk lid opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–)
BCM
connectorTe r m i n a l
M18 30 GroundTrunk lid open-
er switchPushed 0
Released Battery voltage
PIIB6468E