ABS NISSAN NAVARA 2005 Repair Owner's Guide

TROUBLE DIAGNOSIS
BRC-21
[ABS]
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B
BRC
Note 1:Confirm tyre pressure is normal.
Note 2:On and off timing for warning lamp and indicator lamp. Refer toBRC-24, "
BASIC INSPECTION 3 ABS WARNING LAMP AND
BRAKE WARNING LAMP INSPECTION".
Active TestEFS005TW
CAUTION:
lDo not perform active test while driving vehicle.
lMake sure to completely bleed air from brake system.
lActive test cannot be performed when ABS warning lamp is on.
lABS and brake warming lamps turn on during active test.
OPERATION PROCEDURE
1. Touch START (NISSAN BASED VHCL), “ABS”, “ACTIVE TEST” in order on CONSULT-II screen.
If “ABS” is not indicated, go toGI-50, "
CONSULT-II Data Link Connector (DLC) Circuit".
CAUTION:
When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
ignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,
repeat the operation from step 1.
2. Touch “SELECT TEST ITEM” is displayed.
3. Touch necessary test item.
4. While “MAIN SIGNALS” indication is inverted, touch “START”.
5. “ACTIVE TEST” screen will be displayed so perform the following test.
lSolenoid valve
lABS motor
NOTE:
lWhen active test is performed while depressing the pedal, the pedal depression amount will
change.This is normal.
l“TEST IS STOPPED” is displayed 10 seconds after operation start.
lAfter “TEST IS STOPPED” is displayed, to perform test again, touch “BACK” and repeat step 3.
S ABS SIGNAL ABS operationABS active ON
ABS not active OFF
SEBD FAIL SIG
ABS FAIL SIGSystem error signal statusMalfunctions condition
(When system is malfunc-
tioning)OFF
S CRANKING SIG CRANKING statusCranking ON
Not cranking OFF E:ECU INPUT SIGNALS M:MAIN SIGNALS S:SELECTION FROM MENU
SELECT
MONITOR
ITEMMonitor item Display contentData monitor
ConditionReference value in
normal operation
SFIA1802E

BRC-22
[ABS]
TROUBLE DIAGNOSIS
SOLENOID VALVE
NOTE:
The example shown is for front right wheel. The procedure for the other wheels is the same as given below.
1. For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN” on
the display screen. Make sure solenoid valve operates as
shown in solenoid valve operation chart.
Solenoid Valve Operation Chart
*: ON for 1 to 2 seconds after the touch, and then OFF
ABS MOTOR
Touch “ON” and “OFF” on the screen. Make sure ABS motor relay
and actuator relay operates as shown in table below.
SFIA0678E
OperationABS solenoid valve
UP KEEP DOWN
FR RH IN SOL OFF ON ON
FR RH OUT SOL OFF OFF ON*
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RLY ON ON
SFIA0593E

TROUBLE DIAGNOSIS
BRC-23
[ABS]
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BRC
For Fast and Accurate DiagnosisEFS005TX
PRECAUTIONS FOR DIAGNOSIS
lBefore performing diagnosis, always read precautions. Refer toBRC-17, "CONSULT- II Functions".
lAfter diagnosis is finished, be sure to erase memory. Refer toBRC-18, "ERASE MEMORY".
lWhen checking continuity and voltage between units, be sure to check for disconnection, looseness,
bend, or collapse of connector terminals. If any malfunction is found, repair or replace connector termi-
nals.
lFor intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.
lIf a circuit tester is used for check, be careful not to forcibly extend any connector terminal.
lABS system electrically controls brake operation and engine output. Following symptoms may be caused
by normal operations:
Basic InspectionEFS005TY
BASIC INSPECTION 1 BRAKE FLUID LEVEL, LEAKS, AND BRAKE PADS
1. Check fluid level in the brake reservoir tank. If fluid level is low, refill brake fluid.
2. Check brake tube and around ABS actuator and electric unit (control unit) for leaks. If leakage or seepage
is found, check the following items.
lIf ABS actuator and electric unit (control unit) connection is loose, tighten brake tube to the specified
torque and re-conduct the leak inspection to make sure there are no leakage.
lIf there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw,
replace the damaged part and re-conduct the leak inspection to make sure there are no leakage.
lIf there is leakage or seepage at any location other than ABS actuator and electric unit (control unit)
connection, wipe away leakage or seepage with clean cloth. Then inspect again and confirm than there
is on leakage.
lIf there is leakage from ABS actuator and electric unit (control unit), wipe away leakage or seepage with
clean cloth. Then inspect again. If there is leakage or seepage, replace ABS actuator and electric unit
(control unit).
CAUTION:
ABS actuator and electric unit (control unit) body cannot be disassembled.
3. Check brake pad degree of wear. Refer toBR-24, "
PAD WEAR INSPECTION"in “Front Disc Brake” and
BR-32, "
Lining Thickness Inspection"in “Rear Drum Brake”.
BASIC INSPECTION 2 POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure battery positive cable, negative cable and ground connection are not loose. In addition, check the
battery voltage to make sure it has not dropped and alternator is normal.
Symptom Symptom description Result
Motor operation noiseThis is noise of motor inside ABS actuator and electric unit (control unit). Slight
noise may occur during ABS operation.
Normal
Just after engine starts, motor operating noise may be heard. This is a normal
status of the system operation check.
System operation check noiseWhen engine starts, slight “click” noise may be heard from engine compart-
ment. This is normal and is part of system operation check.Normal
ABS operation
(Longer stopping distance)When driving on roads with a low coefficient of friction, such as snowy roads
or gravel roads, the stopping distance is sometimes longer for vehicles
equipped with ABS. Therefore, when driving on such roads, drive at a suffi-
ciently reduced speed to be safe.Normal

BRC-24
[ABS]
TROUBLE DIAGNOSIS
BASIC INSPECTION 3 ABS WARNING LAMP AND BRAKE WARNING LAMP INSPECTION
ON and OFF Timing for ABS Warning Lamp, Brake Warning Lamp
´:ON –:OFF
Note 1:Brake warning lamp will turn on in case of operating parking brake (switch turned on) or of a actuating brake fluid level switch
(brake fluid is insufficient).
Note 2:After starting engine, turn OFF.
Check the following items when unsuitable for an above condition.
lABS warning lamp: Refer toBRC-28, "Inspection 4 CAN Communication Circuit".
lBrake waning lamp: Refer toBRC-28, "Inspection 4 CAN Communication Circuit",BRC-30, "Inspection 6
Brake Fluid Level Switch Circuit",BRC-32, "Inspection 7 Parking Brake Switch Circuit".
If malfunction is not found, refer toBRC-33, "
Inspection 8 Warning lamp system".
Inspection 1 Wheel Sensor SystemEFS005TZ
Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.
CAUTION:
Check each part between wheel sensor terminals.
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed in self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK TYRE
Check air pressure, wear and size.
Are air pressure, wear and size within standard values?
YES >> GO TO 3.
NO >> Adjust air pressure, or replace tyre.
Condition ABS warning lampBrake warning lamp
[Note 1]Remarks
Ignition SW OFF – — —
Approx. 2 seconds after ignition
switch is turned ON´´[Note 2] —
Approx. 2 seconds later after ignition
switch ON–´[Note 2]Go out 2 seconds after ignition
switch is turned ON.
ABS error´—There is an ABS actuator and
electric unit (control unit) error.
(Power, ground or system mal-
function)
EBD error´´—
Self-diagnostic results
FR RH SENSOR-1,-2
FR LH SENSOR- 1,-2
RR RH SENSOR-1,-2
RR LH SENSOR-1,- 2
ABS SENSOR [MALFUNCTION SIGNAL]

TROUBLE DIAGNOSIS
BRC-25
[ABS]
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BRC
3.CHECK SENSOR AND SENSOR ROTOR
lCheck sensor rotor for damage.
lCheck wheel sensor for damage, disconnection or looseness.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace the malfunctioning component.
4.CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 and
malfunctioning wheel sensor connector E66 (FR - LH), E77 (FR - RH), C10 (RR - LH) or C11 (RR - RH).
Check terminal to see if it is deformed, disconnected, loose, etc., and repair or replace it if any malfunction
condition is found.
2. Reconnect connectors and check that interference with other parts has not cut wheel sensor cables, drive
vehicle at 30 km/h (19 MPH) or more for approximately 1minute, and perform self-diagnosis.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 5.
5.CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect wheel sensor connec-
tor E66 (FR - LH), E77 (FR - RH), C10 (RR - LH) or C11 (RR -
RH) and ABS actuator and electric unit (control unit) connector
E63.
2. Check continuity between terminals. (Also check continuity
when steering wheel is turned right and left and when sensor
harness inside wheel well is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
SFIA3206E
Power supply circuit Signal circuit Ground circuit
WheelABS C/U
(E63)Wheel sensorABS C/U
(E63)Wheel sensorABS C/U
(Signal)Ground
Front RH 34 1 33 2 34, 33
— Front LH 45 1 46 2 45, 46
Rear RH 43 1 42 2 43, 42
Rear LH 36 1 37 2 36, 37
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.

BRC-26
[ABS]
TROUBLE DIAGNOSIS
6.CHECK WHEEL SENSOR
1. Replace wheel sensor that resulted in malfunction by self-diagnosis.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then
perform self-diagnosis.
Is above displayed on self-diagnosis display?
OK >> Wheel sensor has malfunction.
NG >>
lReplace ABS actuator and electric unit (control unit).
lPerform to self-diagnosis again, and make sure that the result shows “NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED”.
Inspection 2 ABS Actuator and Electric Unit (Control Unit)EFS005U0
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed in self-diagnosis display items?
YES >> Replace ABS actuator and electric unit (control unit). Perform ABS actuator and electric unit (con-
trol unit) self-diagnosis again.
NO >> INSPECTION END
Inspection 3 ABS Actuator Relay or ABS Motor Relay CircuitEFS005U1
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed in self-diagnosis item?
YES >> GO TO 2.
NO >> INSPECTION END
Self-diagnostic results
CONTROLLER FAILURE
Self-diagnostic results
FR LH IN ABS SOL
FR LH OUT ABS SOL
RR RH IN ABS SOL
RR RH OUT ABS SOL
FR RH IN ABS SOL
FR RH OUT ABS SOL
RR LH IN ABS SOL
RR LH OUT ABS SOL
PUMP MOTOR
ACTUATOR RLY

TROUBLE DIAGNOSIS
BRC-27
[ABS]
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BRC
2.CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 check
terminal for deformation, disconnection, looseness, and so on. If there is an error, repair or replace termi-
nal.
2. Connect the connector securely and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3.CHECK ABS ACTUATOR RELAY OR ABS MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63.
2. Check voltage between ABS actuator and electric unit (control
unit) harness connector E63 and ground.
OK or NG
OK >> GO TO 4.
NG >> Circuit malfunction between battery and ABS actuator and electric unit (control unit). Repair the
circuit.
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E63 and ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit
(control unit).
NG >> Open or short in harness. Repair or replace harness.
SFIA3042E
ABS actuator and electric unit (control unit)
(harness connector E63)Ground Measured value
1, 32 — Battery voltage
SFIA2878E
ABS actuator and electric unit (control unit)
(harness connector E63)Ground Continuity
16, 47 — Yes

BRC-28
[ABS]
TROUBLE DIAGNOSIS
Inspection 4 CAN Communication Circuit
EFS005U2
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector, and check
the terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or
replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is
“CAN COMM CIRCUIT”displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer toLAN-3, "Precautions When Using CONSULT-II".
NO >> Connector terminal connector is loose, damaged, open, or shorted.
Inspection 5 ABS Actuator and Electric Unit (Control Unit) Power Supply and
Ground Circuit
EFS005U3
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed in self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 check
terminals for deformation, disconnection, looseness, and so on.If there is an error, repair or replace termi-
nal.
2. Connect the connector securely and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
Self-diagnostic results
BATTERY VOLTAGE [MALFUNCTION]

TROUBLE DIAGNOSIS
BRC-29
[ABS]
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BRC
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63.
2. Turn ignition switch ON or OFF and check voltage between ABS
actuator and electric unit (control unit) connector E63 and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connectors.
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) connector E63 and ground.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.
NG >> Repair harness or connectors.
SFIA2881E
ABS actuator and electric unit (control unit)
(harness connector E63)Ground Measurement conditionMeasured
value
4—Ignition switch ON Battery voltage
Ignition switch OFF Approx. 0 V
SFIA2878E
ABS actuator and electric unit (control unit)
(harness connector E63)Ground Continuity
16, 47 — Yes

BRC-30
[ABS]
TROUBLE DIAGNOSIS
Inspection 6 Brake Fluid Level Switch Circuit
EFS005U5
INSPECTION PROCEDURE
1.CHECK BRAKE FLUID LEVEL SWITCH
1. Turn ignition switch OFF and disconnect brake fluid level switch
connector E65. For brake fluid level switch connector, refer to
DI-10, "
Wiring Diagram—METER—".
2. Check continuity between brake fluid level switch connector
E65.
OK or NG
OK >> GO TO 2.
NG >> Replace reservoir tank. Refer toBR-17, "
BRAKE MASTER CYLINDER".
SFIA2940E
Brake fluid level switch Measurement condition Continuity
1, 2When fulling the brake fluid up No
When the brake fluid is insufficient Yes