2008 NISSAN LATIO trunk

TRUNK LID OPENER
BL-173
< SERVICE INFORMATION >
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TRUNK LID OPENER
Component Parts and Harness Connector LocationINFOID:0000000001704069
System DescriptionINFOID:0000000001704070
Power is supplied at all times
• through 40A fusible link (letter g, located in fuse and fusible link box)
• to BCM terminal 70
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57
• through 10A fuse [No. 31, located in fuse block (J/B)]
• to Intelligent Key unit terminal 11 (with Intelligent Key).
Ground is supplied
• to BCM terminal 67 and
• to Intelligent Key unit terminal 12 (with Intelligent Key)
• through body grounds M57 and M61.
When trunk lid opener switch is ON (pushed), ground is supplied
• to BCM terminal 30 (without Intelligent Key)
• through trunk lid opener switch terminals 1 and 2
• through front door lock actuator LH (door unlock sensor) terminals 4 and 5 (without power windows) or
• through front door lock actuator RH (door unlock sensor) terminals 4 and 5 (with power windows)
• through body grounds M57 and M61
• to Intelligent Key unit terminal 24 (with Intelligent Key)
• through trunk lid opener switch terminals 1 and 2
• through body grounds B117 and B132.
Then power is supplied
• through BCM terminal 53
• to trunk lamp switch and trunk release solenoid terminal 2.
Ground is supplied
LIIA2918E
1. BCM M18, M19, M20
(view with glove box removed)2. Intelligent Key unit M52
(with Intelligent Key)3. Lamp switch and trunk release sole-
noid B127
4. Trunk lid opener switch B128 5. Front door lock actuator (door unlock
sensor) LH D3, RH D114

BL-174
< SERVICE INFORMATION >
TRUNK LID OPENER
• to trunk lamp switch and trunk release solenoid terminal 1
• through body grounds B117 and B132.
Then BCM operates trunk lamp switch and trunk release solenoid.
Wiring Diagram - TLID -INFOID:0000000001704071
WITHOUT INTELLIGENT KEY SYSTEM
WIWA2278E

TRUNK LID OPENER
BL-175
< SERVICE INFORMATION >
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WITH INTELLIGENT KEY SYSTEM
Terminal and Reference Value for BCMINFOID:0000000001704072
Refer to BCS-11, "Terminal and Reference Value for BCM".
Terminal and Reference Value for Intelligent Key UnitINFOID:0000000001704073
Refer to BL-96, "Terminal and Reference Value for Intelligent Key Unit".
WIWA2279E

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 >
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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

BL-178
< SERVICE INFORMATION >
TRUNK LID OPENER
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 TRUNK LID OPENER SWITCH
Check continuity between trunk lid opener switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace trunk lid opener switch.
4.CHECK TRUNK LID OPENER SWITCH CIRCUIT 2
1. Disconnect front door lock actuator LH (door unlock sensor) connector.
2. Check continuity between trunk lid opener switch connector (A) B128 terminal 2 and front door lock actu-
ator LH (door unlock sensor) connector (B) D3 terminal 4.
3. Check continuity between trunk lid opener switch connector (A)
B128 terminal 2 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between trunk lid opener switch and front door lock actuator LH (door
unlock sensor).
5.CHECK FRONT DOOR LOCK ACTUATOR LH (DOOR UNLOCK SENSOR) GROUND CIRCUIT
Check continuity between front door lock actuator LH (door unlock sensor) connector terminal 5 and ground.
AB
Continuity
BCM connector TerminalTrunk lid opener
switch connectorTe r m i n a l
M18 30 B128 1 Yes
A
GroundContinuity
BCM connector Terminal
M18 30 No
PIIB6469E
Te r m i n a l
Trunk lid opener
switch conditionContinuity
Trunk lid opener switch
12Pushed Yes
Released No
PIIB6470E
AB
Continuity
Trunk lid opener
switch connectorTe r m i n a lFront door lock ac-
tuator LH (door un-
lock sensor)
connectorTe r m i n a l
B128 2 D3 4 Yes
Trunk lid opener
switch connectorTe r m i n a l
GroundContinuity
B128 2 No
WIIA1272E

TRUNK LID OPENER
BL-179
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness.
6.CHECK UNLOCK SENSOR FUNCTION
1. Connect front door lock actuator LH (door unlock sensor) connector.
2. Check continuity between trunk lid opener switch connector B128 terminal 2 and ground.
OK or NG
OK >> GO TO 7.
NG >> Replace front door lock actuator LH (door unlock sen-
sor). Refer to BL-150
.
7.CHECK TRUNK LID OPENER SWITCH SIGNAL 2
1. Connect BCM connector.
2. Check voltage between BCM connector M18 terminal 30 and ground.
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 Trunk Lid Opener Switch Circuit (Without Intelligent Key, with Power Windows)
INFOID:0000000001704079
1.CHECK TRUNK LID OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob RH 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 RH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
Front door lock actuator
LH (door unlock sensor) connec-
torTe r m i n a l
GroundContinuity
D3 5 Yes
PIIB6423E
Trunk lid opener
switch connec-
torTe r m i n a lFront door lock
knob LH positionContinuity
B128 2 GroundUnlock Yes
Lock No
PIIB6472E
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage
PIIB6468E
Test item Condition
TRNK OPNR SWTrunk lid opener switch is pushed: ON
Trunk lid opener switch is released: OFF

BL-180
< SERVICE INFORMATION >
TRUNK LID OPENER
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 (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 TRUNK LID OPENER SWITCH
Check continuity between trunk lid opener switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace trunk lid opener switch.
4.CHECK TRUNK LID OPENER SWITCH CIRCUIT 2
1. Disconnect front door lock actuator RH (door unlock sensor) connector.
2. Check continuity between trunk lid opener switch connector (A) B128 terminal 2 and front door lock actu-
ator 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 GroundTrunk lid open-
er switchPushed 0
Released Battery voltage
PIIB6468E
AB
Continuity
BCM connector TerminalTrunk lid opener
switch connectorTe r m i n a l
M18 30 B128 1 Yes
A
GroundContinuity
BCM connector Terminal
M18 30 No
PIIB6469E
Te r m i n a l
Trunk lid opener
switch conditionContinuity
Trunk lid opener switch
12Pushed Yes
Released No
PIIB6470E