BRC-52
[ESP/TCS/ABS]
PRECAUTIONS
[ESP/TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS0019N
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.
WAR NIN G:
lTo 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 per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
lDo 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 harness connector.
Precautions for Brake SystemEFS0019O
lRecommended fluid is brake fluid “DOT 3” or “DOT 4”.
lNever reuse drained brake fluid.
lBe careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed
on painted areas, wash it away with water immediately.
lNever use mineral oils such as gasoline or kerosene. They will ruin rubber parts of hydraulic system.
lUse flare nut wrench when removing and installing brake tubes.
lAlways torque brake lines when installing.
lBefore working, turn the ignition switch OFF and disconnect the
connectors for the ESP/TCS/ABS actuator and control unit or
the battery terminals.
lBurnish the brake contact 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-10, "
Brake Burnishing
Procedure".
WAR NIN G:
Clean brakes with a vacuum dust collector to minimize risk
of health hazard from powder caused by friction.
Precautions for Brake ControlEFS0019P
lDuring the EPS/TCS/ABS operation, the brake pedal vibrates lightly and its mechanical noise may be
heard. This is a normal condition.
lJust after starting the vehicle after ignition switch ON, the brake pedal may vibrate or the motor operating
noise may be heard from the engine compartment. This is a normal status of the operation check.
lThe stopping distance may be longer than that of vehicles without ABS when the vehicle drives on rough,
gravel, or snowy (fresh deep snow) road.
lIf a malfunction is indicated by the ABS warning lamp, or other warning lamps, collect the necessary infor-
mation from the customer (what symptoms are present under what conditions) and find out the possible
causes before starting the service. Besides the electrical system inspection, check the booster operation,
brake fluid level, and oil leaks.
lIf the tire size and type are used in a improper combination, or the brake pads are not NISSAN genuine
parts, the stopping distance or steering stability may deteriorate.
lIf there is a radio, antenna, or antenna lead-in wire (including wiring) near the control unit, the ESP/TCS/
ABS function may have a malfunction or error.
lIf aftermarket parts (e.g. Car stereo equipment, CD player) have been installed, check the electrical har-
nesses for pinches, open, and improper wiring.
SBR686C
GENERAL INFORMATION
BRC-57
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
lWhen starting the engine, or just after starting the vehicle, the brake pedal may vibrate or the
motor operating noise may be heard from the engine compartment. This is a normal status of the
operation check.
lThe stopping distance may be longer than that of vehicles without ABS when the vehicle drives on
rough, gravel, or snowy (fresh deep snow) road.
TCS FunctionsEFS0019V
1. With the wheel speed sensor signals from 4 wheels, the ESP/TCS/ABS control unit detects a wheel spin.
If a wheel spins, the control unit controls brake fluid pressure to the spinning wheel, and cuts the fuel to
the engine. It also closes the throttle valve to reduce the engine torque. Furthermore, throttle position is
controlled to the appropriate engine torque.
2. If a wheel spins, the TCS system works same as LSD (Limited Slip Differential) function applying brake
fluid pressure to the spinning wheel.
3. During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
CAUTION:
lDuring TCS operation, the body and the brake pedal lightly vibrate and the mechanical noise may
be heard. This is a normal condition.
lDepending on road circumstances, the driver may have a sluggish feel. This is not abnormal,
because the optimum traction has the highest priority by TCS operation.
lWhen the vehicle is passing through a road where the surface friction coefficient varies, down-
shifting or depressing the accelerator pedal fully may activate TCS temporarily.
ESP FunctionsEFS0019W
1. The Electronic Stability Program is called the ESP for short.
The ESP is indicated as the VDC (the Vehicle Dynamics Control) on the CONSULT-II screen.
2. In addition to the ABS/TCS function, ESP detects the driver's steering operation amount and brake opera-
tion amount from the steering angle sensor and pressure sensor. Using the information from the yaw rate/
side G sensor and wheel speed sensors, ESP judges the driving condition (conditions of understeer and
oversteer) to improve the stability by controlling the brake on 4 wheels and engine output.
3. During ESP operation, the SLIP indicator lamp flashes to inform the driver of the operation.
CAUTION:
lDuring ESP operation, the body and the brake pedal lightly vibrate and their mechanical noise
may be heard. This is a normal condition.
lIf the vehicle is rotated on a turn table, or rolled and rocked on a ship, the ABS warning lamp,
ESP OFF indicator lamp, and SLIP indicator lamp may turn ON. In this case, start the engine on a
normal road again. If the ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp
turn OFF after the restart, it is normal.
lWhen driving in a steep slope such as a bank, the ABS warning lamp, ESP OFF indicator lamp,
and SLIP indicator lamp may turn ON. In this case, start the engine on a normal road again. If the
ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp turn OFF after the restart, it
is normal.
BRC-88
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
For Correct and Quick Diagnosis
EFS001A8
PRECAUTIONS FOR TROUBLE DIAGNOSIS
lBefore performing the trouble diagnosis, always read theGI-3, "PRECAUTIONS"to confirm the general
precautions.
lAfter replacement of ESP/TCS/ABS control unit, steering angle sensor, steering parts, suspension parts,
or tires, and adjustment of alignment, always adjust the neutral position of steering angle sensor before
driving.
lWhen the ESP/TCS/ABS control unit is replaced, check that the label on the computer unit is identical
color.
lAfter completing the trouble diagnosis, always erase the malfunctioning memory.BRC-77, "Functions of
CONSULT-II"
lWhen inspection of the continuity or voltage between units is performed, check the connector terminals for
disconnection, looseness, bend, or collapse. If any malfunction is detected, repair or replace the applica-
ble part.
lIntermittent problems may be caused by a malfunction on harness, connector, or terminal. Move the har-
nesses, harness connectors, or terminals by hand to make sure that there is no contact malfunction.
lIf a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
lFor self-diagnosis, active test, and work support of ESP/TCS/ABS control unit with CONSULT-II, stop and
connect CONSULT-II and select²ABS².
lCONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some case, the
later ones (timing value is small) appear on the next screen.
lWhile the self-diagnosis results of CONSULT-II shows a malfunction, if CONSULT-II active test is per-
formed, an engine system malfunction may be indicated. In this case, start the engine to resume the nor-
mal screen.
lESP/TCS/ABS system electronically controls the brake operation and engine output. The following symp-
toms may be caused by the normal operations.
Symptom Symptom description Result
Motor operation noiseDuring ESP, TCS, or ABS operation, sometimes a faint noise can be
heard. This is a motor operation noise in the ESP/TCS/ABS actuator.
Normal
Just after the engine starts, the motor operating noise may be heard.
This is a normal status of the system operation check.
System operation check
noiseWhen the engine starts, a²click²noise may be heard from the engine
compartment. This is a normal status of the system operation check.Normal
ESP/TCS operation
(SLIP lamp ON)When the vehicle is passing through a road where the surface friction
coefficient varies or the wheel speed changes suddenly by downshifting
or depressing of the accelerator pedal fully, TCS may be activated tem-
porarily.
Normal
Cancel the ESP/TCS
function for the
inspection on a chas-
sis dynamometer. Before the speedometer inspection, turn ESP OFF switch off to cancel
the ESP/TCS function.
When the accelerator pedal is depressed on a chassis dynamometer,
the vehicle speed will not increase. This is not malfunction, because
TCS is activated by the wheel speed difference between front and rear.
The warning lamp may also illuminate to show²sensor system failure²in
this case. This is not malfunction either, because the stationary front
wheels are detected. Restart the engine, and drive the vehicle at 30 km/
h or higher to check that the warning lamp no longer illuminates.
ABS operation (Longer stop-
ping distance)The stopping distance may be longer for the vehicles with ABS when the
vehicle is driver on snowy and rough road. When driving on the road like
that, slow down the speed.Normal
Sluggish feelDepending on road circumstances, the driver may have a sluggish feel.
This is not abnormal, because the optimum traction has the highest pri-
ority (safety first) by TCS operation. Sometimes the driver has a slight
sluggish feel against the substantial accelerator pedal operation.Normal
BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 4: ABS Does Not Work.EF S0 01 AV
Inspection procedure
1.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2.WHEEL SPEED SENSOR INSPECTION
Check the wheel speed sensor system.
lSensor mounting inspection
lSensor pick-up inspection for iron chips
lSensor rotor inspection (e.g. Number of teeth, damaged teeth)
lSensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel speed sensor and rotor lines repair
Symptom 5: Pedal Vibration and NoiseEFS001AW
Inspection procedure
1.SYMPTOM CHECK
Check the brake system for pedal vibration or noise at the engine start.
Is inspection result OK?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2.SYMPTOM CHECK 2
Check the brake system for pedal vibration or noise when the pedal depressed lightly (just put a foot on).
CAUTION:
Under the following driving conditions, the wheel speed will fluctuates, resulting in ABS activation.
lWhen shifting gears
lHigh speed cornering
lWhenagustofwind
Is inspection result OK?
YES >> GO TO 3.
NO >> Normal
CL-6
CLUTCH PEDAL
FREE PLAY INSPECTION
lPress the clutch pedal by hand until certain resistance can be
felt. Using a scale, check that the free play is within the specified
range.
CLEARANCE CHECK
1. Start the engine and let it idle.
2. Apply parking brake.
3. Depress the brake pedal.
4. Fully depress clutch pedal and shift to 1st gear.
5. Release clutch pedal gradually. Stop releasing the pedal at the
point where the clutch is about to be engaged. Using a scale,
check the clearance between the clutch pedal and floor panel to
see if it is within the specified range.
NOTE:
Pedal height at clutch disengagement varies slightly from the clutch engagement point.Despite this, pedal
height at clutch engagement is commonly used for both cases in order to simplify they the inspection.
Removal and InstallationECS001WC
NOTE:
Install clutch pedal assembly and adjust the pedal height. Tighten stopper bolt to the specified torque.Pedalfreeplay :9-16mm(0.35-0.63in)
MAA0023D
Pedal height when the clutch disengages:
85 mm (0.335 in) or more
MAA0024D
SCIA0337E
1 Pedal bracket assembly 2 Fulcrum pin 3 Clutch switch
4 Stopper bolt 5 Lock nut 6 Bushing
7 Bushing 8 Snap pin 9 Stopper rubber
10 Clutch pedal 11 Bushing 12 Clevis pin
13 Stopper rubber 14 Bushing 15 Assist spring
DI-2
Engine Models) ....................................................... 31
Inspection/Vehicle speed signal ............................. 32
Inspection/Fuel Level Sensor Unit .......................... 33
FUEL LEVEL SENSOR UNIT .............................. 33
LOW-FUEL WARNING LAMP ............................. 33
The Fuel Gauge Pointer Fluctuates·Indicator
Wrong Value·or Varies. ........................................... 35
The Fuel Gauge Does Not Move to F-position. ...... 36
The Fuel Gauge Does Not Work. ........................... 36
Low Fuel Warning Lamp Illuminate or Not Illuminate... 37
Electrical Components Inspection .......................... 37
FUEL LEVEL SENSOR UNIT CHECK / GASO-
LINE ENGINE MODELS ...................................... 37
FUEL LEVEL SENSOR UNIT CHECK / DIESEL
ENGINE MODELS ............................................... 37
THERMAL TRANSMITTER CHECK ................... 38
Removal and Installation for Combination Meter .... 38
Disassembly and Assembly for Combination Meter... 38
WARNING LAMPS .................................................... 39
Schematic ............................................................... 39
Wiring Diagram — WARN —/ LHD Models ............ 40Wiring Diagram — WARN — / RHD Models ...........45
Electrical Components Inspection ...........................50
FUEL WARNING LAMP OPERATION CHECK ... 50
OIL PRESSURE SWITCH CHECK ......................50
DIODE CHECK ....................................................50
A/T INDICATOR .........................................................51
Wiring Diagram — AT/IND — .................................51
WARNING CHIME .....................................................52
System Description .................................................52
POWER SUPPLY AND GROUND CIRCUIT .......52
IGNITION KEY WARNING CHIME ......................52
LIGHT WARNING CHIME ...................................52
Component Parts and Harness Connector Location... 53
Wiring Diagram — CHIME — .................................54
Symptom Chart .......................................................56
Power Supply and Ground Circuit Check ...............56
Lighting Switch Input Signal Check .........................57
Key Switch Insert Signal Check ..............................57
Door Unlock Sensor Check .....................................58
Front Door Switch (driver side) Check ....................59
CLOCK ......................................................................60
Wiring Diagram — CLOCK — .................................60
EC-32
[QR (WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
lBattery voltage: More than 12.9V (At idle)
lEngine coolant temperature: 70 - 100°C (158 - 212°F)
lPNP switch: ON
lElectric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
lSteering wheel: Neutral (Straight-ahead position)
lVehicle speed: Stopped
lTransmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1. PerformEC-31, "Accelerator Pedal Released Position Learning".
2. PerformEC-31, "
Throttle Valve Closed Position Learning".
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good
order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
SEF452Y
SEF454Y
EC-36
[QR (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
IntroductionEBS00BM5
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
´: Applicable —: Not applicable
*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in two
consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer toEC-62
.)
Two Trip Detection LogicEBS00BM6
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MI will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MI, and store
DTC and Freeze Frame data, even in the 1st trip, as shown below.
´: Applicable —: Not applicable
*1: Except “ECM”Emission-related diagnostic information ISO Standard
Diagnostic Trouble Code (DTC) Mode 3 of ISO 15031-5
Freeze Frame data Mode 2 of ISO 15031-5
System Readiness Test (SRT) code Mode 1 of ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of ISO 15031-5
Calibration ID Mode 9 of ISO 15031-5
DTC 1st trip DTCFreeze Frame
data1st trip Freeze
Frame dataSRT code Test value
CONSULT-II´´ ´ ´ ´—
GST´´*1´—´´
ECM´´*2 — — — —
ItemsMI DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected´———— —´—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected——´——´——
Fail-safe items (Refer toEC-62
.) —´——´*1 —´*1 —
Except above — — —´—´´—