NISSAN LATIO 2009 Service Repair Manual

BL-180< SERVICE INFORMATION >
BACK DOOR LOCK
13 V Instrument panel an-
tenna (+) signal
LOCK• Any door open
→ all door close
• Press ignition knob switch: ON (Ignition knob switch)
14 LG Instrument panel an-
tenna (-) signal
15 L Front console antenna
(+) signal
LOCK• Any door open
→ all door close
• Press ignition knob switch: ON (Ignition knob switch)
16 P Front console antenna
(-) signal
17 W Rear bumper antenna
(+) signal
LOCK Press back door request switch.
18 B Rear bumper antenna
(-) signal
19 V Front outside antenna
LH (+) signal
LOCK Press door request switch LH.
20 P Front outside antenna
LH (-) signal
22 *2
BR Key interlock solenoid — With Intelligent Key present or mechanical
key in ignition cylinder, press "PUSH" but-
ton on ignition cylinder. Battery voltage
Other than above 0
23 LG Back door open output — Back door open (switch closed) 0
Back door closed (switch open) 5
24 V Back door opener
switch —Press and hold back door switch. 0
Other than above 5
25 L Front door request
switch RH —Press front door request switch RH. 0
Other than above 5
26 SB Stop lamp switch — Depress brake pedal Battery voltage
Other than above 0
27 W Ignition knob switch — Press ignition switch. Battery voltage
Release ignition switch. 0
28 Y Unlock sensor
(driver side) —Door (driver si
de) is locked. 5
Door (driver side ) is unlocked. 0
Terminal
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch
Position Operation or Conditions PIIB5502J
PIIB5502J
SIIA1910J
SIIA1910J

BACK DOOR LOCK
BL-181
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
*1: With continuously variable transmission (CVT) or automatic transmission (A/T).
*2: With manual transmission (M/T).
CONSULT-III Function (BCM) INFOID:0000000004305088
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following. 29 V
Back door request
switch (hatchback) —Press back door request switch. 0
Other than above 5
Trunk opener request
switch (sedan) —Press trunk opener request switch. 0
Other than above 5
31 BR Steering lock solenoid
ground — — 0
32 GR Steering lock solenoid
communication signal LOCKWhen Intelligent Key is inside vehicle,
press ignition knob switch.
Other than above 5
33 R Rear floor antenna (+)
signal
LOCK• Any door open
→ all door close
• Press ignition knob switch: ON (Ignition
knob switch)
34 G Rear floor antenna (-)
signal
37 BR Front outside antenna
RH (+) signal
LOCK Press door request switch RH.
38 Y Front outside antenna
RH (-) signal
Terminal
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch
Position Operation or Conditions SIIA1911J
PIIB5502J
SIIA1910J
BCM
diagnostic test item Diagnostic mode Description
Inspection by part WORK SUPPORT
Supports 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 TEST Operation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BC M self-diagnosis results.
CAN DIAG SUPPORT MNTR The 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.

System Description " .
3. Repair or replace any malfunctioning parts. Refer to BL-182, " 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 Symptom INFOID:0000000004305090
BCM Power Supply and Gr ound Circuit Inspection INFOID:0000000004678881Test item Content
TRUNK/BACK DOOR This 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 procedure
Reference
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-183 3. Check back door lock assembly (actuator) circuit.
BL-190 4. Replace BCM.
BCS-18Back door opener does not operate.
(Without Intelligent Key, with power windows) 1. Check BCM power supply and ground circuit.
BCS-15 2. Check back door opener switch circuit.
BL-186 3. Check back door lock assembly (actuator) circuit.
BL-190 4. Replace BCM.
BCS-18Back 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-126 3. Check back door opener switch circuit.
BL-188 4. Check back door lock assembly (actuator) circuit.
BL-190 5. Replace BCM.
BCS-18

BACK DOOR LOCK
BL-183
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse. Refer to PG-3, " Schematic " .
2.
CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.
OK or NG OK >> GO TO 3.
NG >> Repair or replace the harness. 3.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Check Back Door Opener S witch Circuit (Without Intellig ent Key or Power Windows)
INFOID:00000000043050921.
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. Connector
Terminals
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON
or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage LIIA2415E
67 - Ground : Continuity should exist.
LIIA0915E
Test item Condition
TRNK OPNR SW Back door opener switch is pushed: ON
Back door opener switch is released: OFF

OK >> Back door opener switch is OK.
NG >> GO TO 2 OK >> GO TO 3
NG >> Repair or replace harness. OK >> GO TO 4
NG >> Replace back door opener switch.

BL
N
O P
3. Check continuity between back door opener switch connector
(A) D408 terminal 2 and ground.
OK or NG OK >> GO TO 5
NG >> Repair or replace harness between back door opener switch and front door lock actuator LH (door
unlock sensor). OK >> GO TO 6
NG >> Repair or replace harness. OK >> GO TO 7
NG >> Replace front door lock actuator LH (door unlock sen- sor). Refer to BL-166 .

BL-186< SERVICE INFORMATION >
BACK DOOR LOCK
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 Swit ch Circuit (Without Intelligent Key, with Power Windows)
INFOID:00000000043050931.
CHECK BACK DOOR OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob RH 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 RH 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) M 18 terminal 30 and back door opener switch connector
(B) terminal 1.
4. Check continuity between BCM connector (A) M18 terminal 30
and ground. Terminals
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage PIIB6468E
Test item Condition
TRNK OPNR SW Back door opener switch is pushed: ON
Back door opener switch is released: OFF Terminals
Door conditionVoltage (V)
(Approx.)
(+)
(–)
BCM
connector Terminal
M18 30 Ground Back door
opener switch Pushed 0
Released Battery voltage PIIB6468E
A B
Continuity
BCM connector Terminal Back door opener
switch connector Terminal
M18 30 D408 1 Yes PIIB6469E

BL
N
O P
OK or NG OK >> GO TO 3
NG >> Repair or replace harness. OK >> GO TO 4
NG >> Replace back door opener switch. OK >> GO TO 5
NG >> Repair or replace harness between back door opener switch and front door lock actuator RH (door unlock sensor). Terminal
Back door opener
switch condition Continuity
Back door opener switch
1 2 Pushed Yes
Released No

BL-188< SERVICE INFORMATION >
BACK DOOR LOCK
OK or NG OK >> GO TO 6
NG >> Repair or replace harness. 6.
CHECK UNLOCK SENSOR FUNCTION
1. Connect front door lock actuator RH (door unlock sensor) connector.
2. Check continuity between back door opener switch connector D408 terminal 2 and ground.
OK or NG OK >> GO TO 7
NG >> Replace front door lock actuator RH (door unlock sen- sor). Refer to BL-166 .
7.
CHECK BACK DOOR OPENER SWITCH SIGNAL 2
1. Connect BCM connector.
2. Check voltage between BCM connector 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 Back Door Opener Switch Circuit (With Intelligent Key) INFOID:00000000043050941.
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 Front door lock actuator
RH (door unlock sensor) connec-
tor Terminal
GroundContinuity
D114 5 Yes WIIA1273E
Back door
opener switch connector Terminal
Front door lock
knob RH position Continuity
D408 2 Ground Unlock Yes
Lock No PIIB6472E
Terminals
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage PIIB6468E
Test item Condition
I-KEY TRNK Back door opener switch is pushed: ON (momentarily)
Back door opener switch is released: OFF

BL
N
O P
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 OK >> GO TO 3
NG >> Repair or replace harness. OK >> GO TO 4
NG >> Replace back door opener switch.