2009 NISSAN LATIO warning light

VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-229
< SERVICE INFORMATION >
C
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G H
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M A
B BL
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30
1
VBack door/trunk out-
put Output —Back door open (switch
closed) 0V
Back door closed (switch
open) 5V
30 3
VBack door opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
30 4
VTrunk lid opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
32 LG Combination switch
output 5 Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 Y Combination switch
output 4 Output ON
Lighting, turn, wiper OFF
Wiper dial position 4
34 V Combination switch
output 3 Output ONLighting, turn, wiper OFF
Wiper dial position 4
35 R Combination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 P Combination switch
output 1
37 1
GKey switch and igni-
tion knob switch Input OFFIntelligent Key inserted Battery voltage
Intelligent Key removed 0V
37 2
GKey switch and key
lock solenoid Input OFFKey inserted Battery voltage
Key removed 0V
38 W Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
41 6
WTrunk key cylinder
switch Input —ON (Full unlock position) 0V
OFF (Neutral position) 5V
42 6
Y Trunk lamp switch Input OFF ON (trunk open) 0V
OFF (trunk closed) Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

BL-252< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
Terminal and Reference Value for BCM INFOID:0000000004678935
Terminal Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
2 BR Combination switch
input 5 Input ONLighting, turn, wiper OFF
Wiper dial position 4
3 GR Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4 L Combination switch
input 3 Input ONLighting, turn, wiper OFF
Wiper dial position 4
5 G Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6 V Combination switch
input 1
7 7
BRFront door key cylin-
der switch LH (unlock) Input
OFFON (open, 2nd turn) Momentary 1.5V
OFF (closed) 0V
8 7
YFront door key cylin-
der switch LH (lock) InputOn (open) Momentary 1.5V
OFF (closed) 0V
9 W Rear window defogger
switch Input ONRear window defogger switch
ON 0V
Rear window defogger switch
OFF 5V
11 L Ignition switch (ACC
or ON) InputACC or
ON Ignition switch ACC or ON Battery voltage
12 SB Front door switch RH Input OFF ON (open) 0V
OFF (closed) Ba ttery voltage
13 GR Rear door switch RH Input OFF ON (open) 0V
OFF (closed) Ba ttery voltage
15 W Tire pressure warning
check connector Input OFF — 5V SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

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Precaution for Brake Control
INFOID:0000000004307252
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from
engine compartment. This is normal due to the self check operation.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
• When an error is indicated by ABS or another warning lamp, collect all necessary information from customer
(what symptoms are present under what conditions) and check for simple causes before starting diagnosis.
Besides electrical system inspection, check brake booster operation, brake fluid level, and fluid leaks.
• If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts, stop-
ping distance or steering stability may deteriorate.
• If there is a radio, antenna or related wiring near t he control module, ABS function may have a malfunction
or error.
• If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness pinches, open circuits or improper wiring.
Precaution for CAN System INFOID:0000000004307253
• Do not apply voltage of 7.0V or higher to terminal to be measured.
• Maximum open terminal voltage of tester in use must be less than 7.0V.
• Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.
• Area to be repaired must be soldered and wrapped with tape. Make sure that fraying of twisted wire is within 110 mm (4.33 in).
• Do not make a bypass connection to repaired area. (If the circuit is bypassed, characteristics of twisted wire will be lost.)

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SYSTEM DESCRIPTION
System Component INFOID:0000000004307256
ABS Function INFOID:0000000004307257
• The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoiding obsta-
cles during emergency braking.
• If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative and
the ABS warning lamp turns on.
• The electrical system can be diagnosed using CONSULT-III.
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
EBD Function INFOID:0000000004307258
• Electronic Brake Distribution is a function that detec ts subtle slippages between the front and rear wheels
during braking, and it improves handling stability by elec tronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.
• If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inopera-
tive, and the ABS warning lamp and brake warning lamp are turned on.
• The electrical system can be diagnosed using CONSULT-III.
• During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
Fail-Safe Function INFOID:0000000004307259
CAUTION:
If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.
ABS/EBD SYSTEM In case of an electrical malfunction with the ABS, the ABS warning lamp wi ll turn on. In case of an electrical
malfunction with the EBD system, the brake warni ng lamp and the ABS warning lamp will turn on.
The system will revert to one of the follo wing conditions of the Fail-Safe function.
1. For ABS malfunction, only the EBD is operative and t he condition of the vehicle is the same condition of
vehicles without ABS system.

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CONTENTS
DRIVER INFORMATION SYSTEM
SERVICE INFORMATION .. ..........................2
PRECAUTION ................................................ .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
COMBINATION METERS .............................. .....3
Component Parts and Harness Connector Loca-
tion ...................................................................... ......
3
System Description ............................................. ......3
Arrangement of Combination Meter .................... ......5
Internal Circuit ..................................................... ......6
Wiring Diagram - METER - ................................. ......7
Combination Meter Harness Connector Terminal
Layout ................................................................. ......
9
Terminal and Reference Value for Combination
Meter ................................................................... ......
9
Self-Diagnosis Mode of Combination Meter ........ ....10
CONSULT-III Function (METER/M&A) ............... ....12
Trouble Diagnosis ............................................... ....13
Symptom Chart ................................................... ....14
Power Supply and Ground Circuit Inspection ..... ....14
Vehicle Speed Signal Inspection ......................... ....15
Engine Speed Signal Inspection ......................... ....16
Fuel Level Sensor Signal Inspection ................... ....16
Fuel Gauge Fluctuates, Indicates Wrong Value, or
Varies .................................................................. ....
18
Fuel Gauge Does Not Move to Full-position ...........18
DTC [U1000] CAN Communication Circuit ......... ....18
Electrical Component Inspection ......................... ....19
Removal and Installation .........................................19
WARNING LAMPS ......................................... ....20
Schematic ........................................................... ....20
Wiring Diagram - WARN - ................................... ....21 Oil Pressure Wa
rning Lamp Stays Off (Ignition
Switch ON) .......................................................... ....
29
Oil Pressure Wa rning Lamp Does Not Turn Off
(Oil Pressure Is Normal) ...................................... ....
31
Component Inspection ......................................... ....31
A/T INDICATOR ................................................ 33
System Description .............................................. ....33
Wiring Diagram - AT/IND - ................................... ....34
A/T Indicator Does Not Illuminate ........................ ....35
CVT INDICATOR ............................................... 37
System Description .............................................. ....37
Schematic ............................................................ ....37
Wiring Diagram - CVTIND - ................................. ....38
CVT Indicator Does Not Illuminate ...................... ....40
WARNING CHIME ............................................. 42
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
42
System Description .............................................. ....42
Wiring Diagram - CHIME - ................................... ....45
Terminal and Reference Value for BCM ..................46
CONSULT-III Function (B CM) .................................46
Trouble Diagnosis ................................................ ....47
Combination Meter Buzzer Cir cuit Inspection .........48
Front Door Switch LH Signal Inspection .............. ....49
Key Switch Signal Inspec tion (Without Intelligent
Key) ..................................................................... ....
50
Key Switch and Ignition Knob Switch Signal In-
spection (With Intelligent Key, When Mechanical
Key Is Used) ........................................................ ....
51
Lighting Switch Signal Inspection ........................ ....53
Parking Brake Switch Signal Inspection .............. ....53
Electrical Component Inspection ......................... ....54

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• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57,
• through 10A fuse [No. 13, located in the fuse block (J/B)]
• to combination meter terminal 27.
With ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 6, located in the fuse block (J/B)]
• to BCM terminal 38,
• through 10A fuse [No. 3, located in the fuse block (J/B)]
• to combination meter terminal 28.
Ground is supplied
• to BCM terminal 67 and
• to combination meter terminals 21, 22 and 23
• through grounds M57 and M61.
IGNITION KEY WARNING CHIME (WITHOUT INTELLIGENT KEY) With the key inserted into the key switch, and the igni tion switch in the OFF or ACC position, when driver's
door is opened, the warning chime will sound.
• BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line.
• When combination meter receives key warning signal, it sounds warning chime.
IGNITION KEY WARNING CHIME (WITH INTELLIGENT KEY)
When Mechanical Key Is Used With the key inserted into the key switch, and the igniti on switch in the LOCK or ACC position, when driver's
door is opened, the warning chime will sound.
• BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line.
• When combination meter receives key warning signal, it sounds warning chime.
When Intelligent Key Is Carried With The Driver
Refer to BL-88, " System Description " .
LIGHT WARNING CHIME The warning chime sounds, when driver's door is opened (door switch ON) with lighting switch ON and the
ignition switch is in any position other than ON or START.
NOTE:
BCM detected lighting switch in the 1st or 2nd position, refer to LT-62, " Combination Switch Reading Func-
tion " .
• BCM detects headlamps are illuminated, and sends li ght warning signal to combination meter with CAN
communication lines. WKIA5464E

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DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
SELF-DIAG RESULTS
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after prin ting the monitor item, go to “LAN system”. Refer to
LAN-17, " Trouble Diagnosis Flow Chart " .
Trouble Diagnosis INFOID:0000000004307032
HOW TO PERFORM TROUBLE DIAGNOSIS 1. Confirm the symptom and customer complaint.
2. Understand the outline of system. Refer to DI-42, " System Description " .
3. Perform the preliminary inspection. Refer to "PRELIMINARY INSPECTION".
4. According to symptom c hart, repair or replace the cause of the malfunction. Refer to "SYMPTOM
CHART".
5. Does warning chime system operate normally? If it operates normally, GO TO 6. If not, GO TO 4.
6. Inspection End.
PRELIMINARY INSPECTION 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 signals are received
from the BCM and received data 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 BCM 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. Monitored item ALL SIGNALS
SELECTION
FROM MENU Contents
IGN ON SW X X Indicates [ON/OFF] condition of ignition switch.
KEY ON SW X X Indicates [ON/OFF] condition of key switch.
DOOR SW-DR X X Indicates [ON/OFF] condition of front door switch LH.
LIGHT SW 1ST X X Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW X X Indicates [ON/OFF] condition of seat belt buckle switch LH. Test item Malfunction is detected when···
IGN KEY WARN ALM This test is able to check key warning chime operation.
LIGHT WARN ALM This test is able to check light warning chime operation.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation. Display item [Code] Malfunction is detected when...
CAN communication [U1000] Malfunction is detected in CAN communication.

CONSULT-III Function (BCM) " .
Self - diagnostic results content
No malfunction detected>>GO TO 2.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts. CONSULT-III Function (METER/M&A) " .
Self - diagnostic results content
No malfunction detected>> Inspection End.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
SYMPTOM CHART
Combination Meter Buzzer Circuit Inspection INFOID:0000000004307033YES >> Combination meter buzzer circuit is OK. Return to
DI-47, " Trouble Diagnosis " .
NO >> GO TO 2. Combination Meter Buzzer Circuit Inspection "
•
DI-49, " Front Door Switch LH Signal Inspection "
If above check is OK, replace BCM. Refer to
BCS-18, " Removal
and Installation of BCM " .
Key warning chime
does not activate. Without Intelligent Key.
Perform
DI-50, " Key Switch Signal Inspection (Without Intelligent
Key) " .
If above check is OK, replace BCM. Refer to BCS-18, " Removal
and Installation of BCM " .
With Intelligent Key, when mechanical key
is used. Perform
DI-51, " Key Switch and Ignition Knob Switch Signal In-
spection (With Intelligent Key, When Mechanical Key Is Used) " .
If above check is OK, replace BCM. Refer to BCS-18, " Removal
and Installation of BCM " .
With Intelligent Key, when Intelligent Key
is carried with the driver. Refer to
BL-119, " Trouble Diagnosis Symptom Chart " .
Light warning chime does not activate. Perform
DI-53, " Lighting Switch Signal Inspection " .
If above check is OK, replace BCM. Refer to BCS-18, " Removal
and Installation of BCM " .
Parking brake warning chime does not activate Perform the following inspections
• DI-53, " Parking Brake Switch Signal Inspection "
•
DI-15, " Vehicle Speed Signal Inspection "