ABS NISSAN NAVARA 2005 Repair Service Manual

TROUBLE DIAGNOSIS
BRC-31
[ABS]
C
D
E
G
H
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MA
B
BRC
2.CHECK HARNESS
1. Turn ignition switch OFF and disconnect combination meter con-
nector M23.
2. Check continuity between brake fluid level switch connector
E65, combination meter connector M23 and ground.
OK or NG
OK >> INSPECTION END
NG >> If the open or short in harness, repair or replace harness.
SFIA3053E
Brake fluid level switch
(harness connector E65)Combination meter
(harness connector M23)Continuity
132Yes
Ground 32 No
2 Ground Yes

BRC-32
[ABS]
TROUBLE DIAGNOSIS
Inspection 7 Parking Brake Switch Circuit
EFS005U6
INSPECTION PROCEDURE
1.CHECK PARKING BRAKE SWITCH
1. Turn ignition switch OFF and disconnect parking brake switch
connector (LHD model: B12, RHD model: B109). For brake fluid
level switch, refer toDI-10, "
Wiring Diagram—METER—".
2. Check continuity between parking brake switch connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace parking brake switch.
2.CHECK HARNESS
1. Disconnect combination meter connector M23.
2. Check continuity between parking brake switch connector (LHD
model: B12, RHD model: B109), combination meter connector
M23 and ground.
OK or NG
OK >> INSPECTION END
NG >> If the open or short in harness, repair or replace harness.
SFIA2935E
Measurement condition Continuity
When the parking brake pedal is operated. Yes
When the parking brake pedal is not operated. No
SFIA3055E
Parking brake switch
(harness connector B12, B109)Combination meter
(harness connector M23)Continuity
131Yes
1 Ground No

TROUBLE DIAGNOSIS
BRC-33
[ABS]
C
D
E
G
H
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MA
B
BRC
Inspection 8 Warning lamp systemEFS005U7
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer toBRC-18, "
Self-Diagnosis".
OK or NG
OK >> GO TO 2.
NG >> Check items displayed by self-diagnosis. Refer toBRC-18, "
Display Item List".
2.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer toDI-13, "
Self-Diagnosis Mode
of Combination Meter".
OK or NG
OK >> INSPECTION END
NG >> Repair or replace combination meter. Refer toDI-27, "
Removal and Installation of Combination
Meter".
Symptom 1: Excessive ABS Function Operation FrequencyEFS005U8
1.CHECK START
Check longitudinal brake force distribution using a brake tester. Refer toBR-35, "
SERVICE DATA AND SPEC-
IFICATIONS (SDS)".
OK or NG
OK >> GO TO 2.
NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.
lBrake booster. Refer toBR-19, "BRAKE BOOSTER".
lHydraulic line. Refer toBR-12, "BRAKE TUBE AND HOSE".
lFront brake caliper. Refer toBR-24, "FRONT DISC BRAKE".
lRear wheel cylinder. Refer toBR-30, "REAR DRUM BRAKE".
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles. Refer to Front:FAX-5, "
WHEEL BEAR-
ING INSPECTION",Rear:RAX-6, "Rear Axle Bearing".
OK or NG
OK >> GO TO 3.
NG >> Repair.
3.CHECK WHEEL SENSOR AND SENSOR ROTOR
Check wheel sensor and sensor rotor for the following.
lWheel sensor installation for damage
lWheel sensor rotor installation for damage
lWheel sensor connector connection
lWheel sensor harness inspection
OK or NG
OK >> GO TO 4.
NG >>
lReplace wheel sensor or sensor rotor.
lRepair harness.

BRC-34
[ABS]
TROUBLE DIAGNOSIS
4.CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer toBRC-18, "
Self-Diagnosis".
Symptom 2: Unexpected Pedal ReactionEFS005U9
1.CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer toBR-6, "
Inspection and Adjustment".
Is the stroke too big?
YES >>lBleed air from brake piping. Refer toBR-11, "Bleeding Brake System".
lCheck brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-
tem fluid leakage, etc. Repair if necessary. Refer to Brake pedal:BR-8, "
COMPONENTS",
brake booster and master cylinder:BR-20, "
COMPONENTS".
NO >> GO TO 2.
2.CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-33, "
Symptom 1: Excessive ABS Function Operation Frequency".
NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.
lBrake booster. Refer toBR-19, "BRAKE BOOSTER".
lHydraulic line. Refer toBR-12, "BRAKE TUBE AND HOSE".
lFront brake caliper. Refer toBR-24, "FRONT DISC BRAKE".
lRear wheel cylinder. Refer toBR-30, "REAR DRUM BRAKE".
Symptom 3: The Stopping Distance Is LongEFS005UA
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1.CHECK FUNCTION
Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS.
In this condition, check stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-33, "
Symptom 1: Excessive ABS Function Operation Frequency".
NG >>
lBleed air from the brake piping. Refer toBR-11, "Bleeding Brake System".
lCheck the following system. If any malfunction is found, repair or replace malfunctioning parts.
–Brake booster. Refer toBR-19, "BRAKE BOOSTER".
–Hydraulic line. Refer toBR-12, "BRAKE TUBE AND HOSE".
–Front brake caliper. Refer toBR-24, "FRONT DISC BRAKE".
–Rear wheel cylinder. Refer toBR-30, "REAR DRUM BRAKE".

TROUBLE DIAGNOSIS
BRC-35
[ABS]
C
D
E
G
H
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MA
B
BRC
Symptom 4: ABS Function Does Not OperateEFS005UB
CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1.CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom1. Refer to
BRC-33, "
Symptom 1: Excessive ABS Function Operation Frequency".
NG >> Perform self-diagnosis. Refer toBRC-18, "
Self-Diagnosis".
Symptom 5: Pedal Vibration or ABS Operation Sound OccursEFS005UC
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.
lWhen shifting gears
lWhen driving on slippery road
lDuring cornering at high speed
lWhen passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
lWhen pulling away just after starting engine [at approximately 10 km/h (6 MPH) or more]
1.SYMPTOM CHECK 1
Check if there is pedal vibration or operation noise when the engine is started.
Do symptoms occur?
YES >> GO TO 2.
NO >> Perform self-diagnosis. Refer toBRC-18, "
Self-Diagnosis".
2.SYMPTOM CHECK 2
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 >> GO TO procedure 3²CHECK WHEEL SENSOR AND SENSOR ROTOR²of symptom 1. Refer to
BRC-33, "
Symptom 1: Excessive ABS Function Operation Frequency".
Symptom 6: ABS Warning Lamp Indication Is Not NormalEFS005UD
NOTE:
Lighting condition of ABS warning lamp refer toBRC-24, "
BASIC INSPECTION 3 ABS WARNING LAMP AND
BRAKE WARNING LAMP INSPECTION".
1.CHECK COMBINATION METER INDICATION
Check the combination meter indication and operation. Refer toDI-13, "
Self-Diagnosis Mode of Combination
Meter".
OK or NG
OK >> GO TO 2.
NG >> Combination meter is malfunctioning. Check combination meter. Refer toDI-4, "
COMBINATION
METERS".

BRC-36
[ABS]
TROUBLE DIAGNOSIS
2.CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results of ABS actuator and electric unit (control unit). Refer toBRC-18, "
Self-Diag-
nosis".
OK or NG
OK >> GO TO procedure 1 of symptom 6.
NG >> Check the items indicated with self-diagnosis.

WHEEL SENSORS
BRC-37
[ABS]
C
D
E
G
H
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K
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MA
B
BRC
WHEEL SENSORSPFP:47910
Removal and InstallationEFS005UE
1. Front wheel sensor (LH) 2. Front wheel sensor connector (LH) 3. Rear wheel sensor (LH)
4. Rear wheel sensor (RH) 5. Clip 6. Rear wheel sensor connector
A. Front B. Rear :Front
SFIA3228E

BRC-38
[ABS]
WHEEL SENSORS
REMOVAL
Pay attention to the following when removing wheel sensor.
CAUTION:
lAs much as possible, avoid rotating wheel sensor when removing it. Pull wheel sensors out with-
out pulling on sensor harness.
lTake care to avoid damaging wheel sensor edges or rotor teeth. Remove wheel sensor first before
removing front or rear wheel hub. This is to avoid damage to wheel sensor wiring and loss of sen-
sor function.
INSTALLATION
Pay attention to the following when installing wheel sensor. Tighten installation bolts and nuts to the specified
torques.
lWhen installing, make sure there is no foreign material such as iron chips on and in the mounting hole of
the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any foreign
material and clean the mount.
lWhen installing wheel sensor, be sure to press rubber grommets in until they lock at locations shown
above in figure. When installed, harness must not be twisted.

SENSOR ROTOR
BRC-39
[ABS]
C
D
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MA
B
BRC
SENSOR ROTORPFP:47970
Removal and InstallationEFS005UF
FRONT
The sensor rotors are built into the wheel hubs and are not removable. If damaged, replace wheel hub and
bearing assembly. Refer toFAX-5, "
Removal and Installation".
REAR
Removal
1. Remove axle shaft assembly. Refer toRAX-7, "Removal and Installation".
NOTE:
It is necessary to assemble the rear axle to replace the sensor rotor.
2. Pull the sensor rotor of off the axle shaft using Tool and a press.
Installation
1. Install new sensor rotor on axle shaft using a suitable length
steel tube and a press. Make sure sensor rotor is fully seated.
CAUTION:
Do not reuse the old sensor rotor.
2. Install axle shaft assembly. Refer toRAX-7, "
Removal and
Installation".
CAUTION:
Do not reuse the axle oil seal. The axle oil seal must be
replaced every time the axle shaft assembly is removed
from the axle shaft housing.
WFIA0341E

BRC-40
[ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
PFP:47660
Removal and InstallationEFS005UG
CAUTION:
lBefore servicing, disconnect battery cables.
lTo remove brake tube, use flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut torque wrench.
lDo not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
lDo not remove and install actuator by holding harness.
lAfter work is completed, bleed air from brake tube and hose. Refer toBR-11, "Bleeding Brake Sys-
tem".
REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
3. Remove ABS actuator and electric unit (control unit) bracket mounting bolts.
4. Remove ABS actuator and electric unit (control unit) from vehicle.
1. To rear 2. From master cylinder secondary
side3. To front left
4. From master cylinder primary side 5. To front right 6. ABS actuator and electric unit (con-
trol unit)
7. Harness connector
Refer to GI section for symbol marks in the figure.
SFIA3016E