Infiniti I30 (A33). Manual — part 105
. . . . . . . . . . . . . 100
TROUBLE DIAGNOSIS - BASIC INSPECTION . . .101
Preliminary Check. . . . . . . . . . . . . 101
Ground Circuit Check . . . . . . . . . . . ..104
. . . . . . . ..104
. . . . . . . . . .104
ABS SOLENOID VALVE RELAY GROUND
. . . ..104
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION . . . . . . . . . . . . . . . .105
Malfunction Code/Symptom Chart. . . . . . ...105
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC
ITEMS. . . . . . . . . . . . . . . . . . ...107
Wheel Sensor or Rotor. . . . . . . . . . . 107
. . . . . . . . ...107
ABS Actuator Solenoid Valve . . . . . . . . .. 110
. . . . . . . . ... 110
Solenoid Valve Relay. . . . . . . . . . . ... 114
. . . . . . . . ... 114
Motor Relay or Motor. . . . . . . . . . . ...120
. . . . . . . . ...120
Low Voltage . . . . . . . . . . . . . . . .126
. . . . . . . . ...126
Control Unit. . . . . . . . . . . . . . . ..128
. . . . . . . . ...128
ENGINE CHECK SIGNAL - Engine System . . ...129
. . . . . . . . ...129
ENG SPEED SIG - Engine Speed Signal. . . ...129
. . . . . . . . ...129
LAN SIGNAL 1 - LAN Monitoring . . . . . . . 131
. . . . . . . . ...131
LAN SIGNAL 2 - LAN Communication Start
Procedures Incomplete. . . . . . . . . . . 132
. . . . . . . . ...132
LAN CIRCUITS 1, LAN CIRCUITS 2 - LAN
Communication System Failure. . . . . . . ...133
. . . . . . . . ...133
LAN SIGNAL 3 - Continued Reception After LAN
Communication Starts . . . . . . . . . . . .135
. . . . . . . . ...135
TROUBLE DIAGNOSES FOR SYMPTOMS . . . ...136
1. ABS Works Frequently . . . . . . . . . . 136
2. Unexpected Pedal Action . . . . . . . . . 136
3. Long Stopping Distance . . . . . . . . . ..137
4. ABS Does Not Work. . . . . . . . . . . 138
5. Pedal Vibration and Noise. . . . . . . . ...139
6. ABS Warning Lamp Does Not Come On
When Ignition Switch Is Turned On. . . . . . .140
7. ABS Warning Lamp Stays On When Ignition
Switch Is Turned On . . . . . . . . . . . . 143
8. SLIP Indicator Lamp Does Not Come On
When Ignition Switch Is Turned On. . . . . . .148
9. TCS OFF Indicator Lamp Does Not Come On
When Ignition Switch Is Turned On. . . . . . .149
10. TCS OFF Switch Is Inoperative . . . . . . 151
11. Poor Acceleration. . . . . . . . . . . ...154
REMOVAL AND INSTALLATION . . . . . . . ...155
Wheel Sensors . . . . . . . . . . . . . . 155
Sensor Rotor. . . . . . . . . . . . . . . 155
. . . . . . . . . . . . . . . .155
. . . . . . . . . . . . . ..156
Control Unit (With TCS Models). . . . . . . ..156
Actuator. . . . . . . . . . . . . . . . . 156
. . . . . . . . . . . . . . . .156
. . . . . . . . . . . . . ..156
SERVICE DATA AND SPECIFICATIONS (SDS) . ...157
General Specifications. . . . . . . . . . . .157
Disc Brake . . . . . . . . . . . . . . . ...157
Brake Pedal . . . . . . . . . . . . . . . .157
Parking Brake . . . . . . . . . . . . . . ..157
Control Valve . . . . . . . . . . . . . . ...157
Brake Booster . . . . . . . . . . . . . . ..158
ABS Wheel Sensor. . . . . . . . . . . . ..158
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CONTENTS
(Cont’d)
BR-3
Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
NHBR0001
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to INFINITI I30 is as follows (The composition var-
ies according to optional equipment.):
I
For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, crash zone sensor, warning lamp, wiring harness and spiral cable.
I
For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring
harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
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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 should be per-
formed by an authorized INFINITI dealer.
I
Improper 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 RS section.
I
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 with yellow harness connector (and with
yellow harness protector or yellow insulation tape before the harness connectors).
SBR686C
Precautions for Brake System
NHBR0002
I
Recommended fluid is brake fluid “DOT 3”.
I
Never reuse drained brake fluid.
I
Be careful not to splash brake fluid on painted areas.
I
To clean or wash all parts of master cylinder, disc brake
caliper and wheel cylinder, use clean brake fluid.
I
Never use mineral oils such as gasoline or kerosene. They
will ruin rubber parts of the hydraulic system.
I
Use flare nut wrench when removing and installing brake
tube.
I
Always torque brake lines when installing.
I
Burnish 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 to “Brake Burnishing Procedure”, “ON-VEHICLE
SERVICE”, BR-8.
WARNING:
I
Clean brake pads and shoes with a waste cloth, then wipe
with a dust collector.
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
BR-4
Wiring Diagrams and Trouble Diagnosis
NHBR0003
When you read wiring diagrams, refer to the following:
I
“HOW TO READ WIRING DIAGRAMS” in GI section
I
“POWER SUPPLY ROUTING” for power distribution circuit in EL section
When you perform trouble diagnosis, refer to the following:
I
“HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES” in GI section
I
“HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT” in GI section
I
For trouble diagnoses of models with ABS, refer to the trouble diagnoses for models with ABS. Refer to
BR-39.
I
For trouble diagnoses of models with TCS, refer to the trouble diagnoses for models with TCS even when
the diagnostic items are related to the ABS system. Refer to BR-81.
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PRECAUTIONS
Wiring Diagrams and Trouble Diagnosis
BR-5
Commercial Service Tools
NHBR0004
Tool name
Description
1 Flare nut crowfoot
2 Torque wrench
NT360
Removing and installing each brake piping
a: 10 mm (0.39 in)
Brake fluid pressure
gauge
NT151
Measuring brake fluid pressure
PREPARATION
Commercial Service Tools
BR-6
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