2007 NISSAN TIIDA Electrical control unit

BCS
BCS-1
ELECTRICAL & POWER CONTROL
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SECTION BCS
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CONTENTS
BODY CONTROL SYSTEM
BASIC INSPECTION ....................................3
INSPECTION AND ADJUSTMENT .....................3
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ..........................................................
3
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
3
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
3
CONFIGURATION .......................................................3
CONFIGURATION : Description ...............................3
CONFIGURATION : Special Repair Requirement ......4
FUNCTION DIAGNOSIS ...............................7
BODY CONTROL SYSTEM ................................7
System Description ...................................................7
Component Parts Location ........................................8
COMBINATION SWITCH READING SYSTEM
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9
System Diagram ........................................................9
System Description ...................................................9
Component Parts Location ......................................12
SIGNAL BUFFER SYSTEM ...............................13
System Diagram ......................................................13
System Description .................................................13
POWER CONSUMPTION CONTROL SYS-
TEM ....................................................................
14
System Diagram ......................................................14
System Description .................................................14
Component Parts Location ......................................15
DIAGNOSIS SYSTEM (BCM) ............................16
COMMON ITEM .........................................................16
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
16
BCM ...........................................................................16
BCM : CONSULT-III Function (BCM - BCM) ...........17
DOOR LOCK ..............................................................17
DOOR LOCK : CONSULT-III Function (BCM -
DOOR LOCK) ..........................................................
17
REAR WINDOW DEFOGGER ...................................18
REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER) .....................
18
BUZZER .....................................................................18
BUZZER : CONSULT-III Function (BCM - BUZZ-
ER) ..........................................................................
18
INT LAMP ...................................................................19
INT LAMP : CONSULT-III Function (BCM - INT
LAMP) ......................................................................
19
MULTIREMOTE ENT .................................................19
MULTIREMOTE ENT : CONSULT-III Function
(BCM - MULTIREMOTE ENT) .................................
19
HEADLAMP ...............................................................20
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ...........................................................
20
WIPER ........................................................................21
WIPER : CONSULT-III Function (BCM - WIPER) ....21
FLASHER ...................................................................22
FLASHER : CONSULT-III Function (BCM -
FLASHER) ...............................................................
22
AIR CONDITIONER ...................................................23
AIR CONDITIONER : CONSULT-III Function
(BCM - AUTO AIR CONDITIONER) ........................
23
INTELLIGENT KEY ....................................................23
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ....................................
23
COMB SW ..................................................................24

PRECAUTIONS
BR-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001716907
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
 Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Brake SystemINFOID:0000000001716908
 Refill using recommended brake fluid. Refer to MA-19, "Fluids and Lubricants".
 Never reuse drained brake fluid.
 Be careful not to splash brake fluid on painted surface of body. If brake fluid is splashed on painted surfaces
of body immediately wipe it off with cloth and then wash it away with water.
 To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use new brake fluid.
 Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
 Use a flare nut wrench when removing a brake tube and use a
flare nut torque wrench when installing a brake tube.
 When installing brake tubes and hoses, be sure to check torque.
 Before working, turn ignition switch OFF and disconnect connec-
tors of ABS actuator and electric unit (control unit) or the battery
cable from the negative terminal.
 Burnish the new braking surfaces after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage. Refer toBR-26, "
Brake Burnishing" .
SBR686C

BRC-16
< FUNCTION DIAGNOSIS >[ABS]
TCS
TCS
System DiagramINFOID:0000000001731212
System DescriptionINFOID:0000000001731213
 Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
 During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.
 Electrical system diagnosis by CONSULT-III is available.
AWFIA0012GB

BRC-22
< FUNCTION DIAGNOSIS >[ABS]
EBD
EBD
System DiagramINFOID:0000000001731220
System DescriptionINFOID:0000000001731221
 Electric Brake force Distribution is a following function. ABS actuator and electric unit (control unit) detects
subtle slippages between the front and rear wheels during braking. Then it electronically controls the rear
braking force (brake fluid pressure) to reduce rear wheel slippage. Accordingly, it improves vehicle stability.
 Electrical system diagnosis by CONSULT-III is available.
AWFIA0014GB

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-71
< ECU DIAGNOSIS >[ABS]
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In case of an electrical malfunction with the ABS, the ABS warning lamp, VDC OFF indicator lamp and SLIP
indicator lamp will turn on. In case of an electrical malfunction with the EBD system, the BRAKE warning lamp,
ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp will turn on.
The system will revert to one of the following conditions of the Fail-Safe function.
1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of
vehicles without ABS/TCS/VDC system.
2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same
as the condition of vehicles without ABS/TCS/VDC or EBD system.
VDC/TCS SYSTEM
In case of TCS/VDC system malfunction, the VDC OFF indicator lamp and SLIP indicator lamp are turned on
and the condition of the vehicle is the same as the condition of vehicles without TCS/VDC system. In case of
an electrical malfunction with the TCS/VDC system, the ABS control continues to operate normally without
TCS/VDC control.
DTC No. IndexINFOID:0000000001731342
DTC Items (CONSULT screen terms) Reference
C1101 RR RH SENSOR-1
BRC-30, "
Description"C1102 RR LH SENSOR-1
C1103 FR RH SENSOR-1
C1104 FR LH SENSOR-1
C1105 RR RH SENSOR-2
BRC-33, "
Description"C1106 RR LH SENSOR-2
C1107 FR RH SENSOR-2
C1108 FR LH SENSOR-2
C1109 BATTERY VOLTAGE [ABNORMAL]BRC-36, "
Description"
C1110 CONTROLLER FAILUREBRC-38, "DTC Logic"
C 1111 P U M P M O T O RBRC-39, "Description"
C1113 G-SENSORXX-XX, "*****"
C1115 ABS SENSOR [ABNORMAL SIGNAL]BRC-41, "Description"
C1116 STOP LAMP SWBRC-44, "Description"
C1120 FR LH IN ABS SOLBRC-46, "Description"
C1121 FR LH OUT ABS SOLBRC-49, "Description"
C1122 FR RH IN ABS SOLBRC-46, "Description"
C1123 FR RH OUT ABS SOLBRC-49, "Description"
C1124 RR LH IN ABS SOLBRC-46, "Description"
C1125 RR LH OUT ABS SOLBRC-49, "Description"
C1126 RR RH IN ABS SOLBRC-46, "Description"
C1127 RR RH OUT ABS SOLBRC-49, "Description"
C1130 ENGINE SIGNAL 1
BRC-52, "
Description"
C1131 ENGINE SIGNAL 2
C1132 ENGINE SIGNAL 3
C1133 ENGINE SIGNAL 4
C1136 ENGINE SIGNAL 6
C1140 ACTUATOR RLYBRC-54, "
Description"
C1142 PRESS SEN CIRCUITXX-XX, "*****"
C1143 ST ANG SEN CIRCUIT
XX-XX, "*****"
C1144 ST ANG SEN SIGNAL

BRC-78
< SYMPTOM DIAGNOSIS >[ABS]
PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
Diagnosis ProcedureINFOID:0000000001731348
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed. However, this is normal.
 When shifting gears
 When driving on slippery road
 During cornering at high speed
 When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
 When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1.SYMPTOM CHECK 1
Check that there are pedal vibrations when the engine is started.
Do vibrations occur?
YES >> GO TO 2
NO >> Inspect the brake pedal.
2.SYMPTOM CHECK 2
Check that there are ABS operation noises when the engine is started.
Do the operation noises occur?
YES >> GO TO 3
NO >> Perform self -diagnosis. Refer to BRC-25, "
CONSULT-III Function (ABS)".
3.SYMPTOM CHECK 3
Check symptoms when electrical component (headlamps, etc.) switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NO >> Normal

BRC-80
< PRECAUTION >[ABS]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001691368
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
 To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
 Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
Precaution for Brake SystemINFOID:0000000001691369
 Recommended fluid is Genuine NISSAN Fluid, DOT 3 or DOT 4 (US FMVSS No. 116).
 Do not reuse the drained brake fluid.
 Be careful not to splash brake fluid on painted areas such as body. If brake fluid is splashed, wipe it off and
flush area with water immediately.
 Do not use mineral oils such as gasoline or kerosene to clean. They will ruin rubber parts and cause
improper operation.
 Using a flare nut torque wrench, securely tighten brake tube flare
nuts.
 Brake system is an important safety part. If a brake fluid leak is
detected, always disassemble malfunctioning parts. If any mal-
functioning part is found, replace the part with a new one.
 Before working, turn ignition switch OFF and disconnect connec-
tors for ABS actuator and electric unit or battery terminals.
 When installing brake piping, be sure to check tightening torque.
Precaution for Brake ControlINFOID:0000000001691370
 During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.
 When starting engine, or just after starting vehicle, brake pedal may vibrate or motor operating noise may be
heard from engine compartment. This is a normal status of operation check.
 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 the cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting diag-
nostic servicing. Besides the electrical system inspection, check booster operation, brake fluid level, and oil
leaks.
 If tyre size and type are used in an improper combination, or brake pads are not Genuine Nissan parts, stop-
ping distance or steering stability may deteriorate.
 If there is a radio, antenna, or antenna lead-in wire (including wiring) near the control unit, ABS system may
malfunction or return an error.
 If aftermarket parts (e.g. car stereo equipment, CD player) have been installed, check electrical harnesses
for pinches, open, and improper wiring.
SBR820BA

BRC-96
< FUNCTION DIAGNOSIS >[ESP/TCS/ABS]
TCS
TCS
System DiagramINFOID:0000000001731069
System DescriptionINFOID:0000000001731070
 Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
 During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.
 Electrical system diagnosis by CONSULT-III is available.
AWFIA0012GB