Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2001_Q45 br
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BRAKE SYSTEM
BR
GI
SECTION MA
EM
CONTENTS LC
PRECAUTIONS AND PREPARATION............................3 Disassembly...............................................................20 EC
Supplemental Restraint System (SRS) AIR Inspection - Caliper....................................................20
BAG and SEAT BELT PRE-TENSIONER...............3 Inspection - Rotor ......................................................20
Precautions for Brake System.....................................3
FE
Assembly ...................................................................21
Commercial Service Tools ...........................................4 Installation..................................................................21
NOISE, VIBRATION AND HARSHNESS (NVH) REAR DISC BRAKE......................................................22 AT
TROUBLESHOOTING .....................................................5 Pad Replacement ......................................................22
NVH Troubleshooting Chart.........................................5 Components...............................................................23
ON-VEHICLE SERVICE ..................................................6 Removal.....................................................................23 PD
Checking Brake Fluid Level.........................................6 Disassembly...............................................................24
Checking Brake Line ...................................................6 Inspection - Caliper....................................................24
Changing Brake Fluid ..................................................6
FA
Inspection - Rotor ......................................................24
Brake Burnishing Procedure........................................6
Assembly ...................................................................25
Bleeding Brake System ...............................................7 RA
Installation..................................................................25
BRAKE HYDRAULIC LINE .............................................8
REAR DISC BRAKE - Parking Drum Brake ...............26
Removal.......................................................................8
Removal.....................................................................26
Inspection.....................................................................8 Inspection - Drum ......................................................27
Installation....................................................................8 Inspection - Lining .....................................................28
CONTROL VALVE ...........................................................9 Installation..................................................................28 ST
Proportioning Valve......................................................9 Shoe Clearance Adjustment ......................................29
BRAKE PEDAL AND BRACKET..................................10 Breaking in Drum and Lining.....................................29
Removal and Installation ...........................................10 PARKING BRAKE CONTROL ......................................30 RS
Inspection...................................................................10 Removal and Installation ...........................................30
Adjustment .................................................................10 Inspection...................................................................31
MASTER CYLINDER.....................................................12 Adjustment .................................................................31 BT
Removal.....................................................................12 TRACTION CONTROL SYSTEM - TCS -.....................32
Disassembly...............................................................12 Purpose......................................................................32
HA
Inspection...................................................................13 System Components .................................................33
Assembly ...................................................................13 ABS (Anti-lock brake system) Operation...................34
Installation..................................................................14 ABS Hydraulic Circuit ................................................34 EL
BRAKE BOOSTER........................................................15 TCS (Traction Control System) Operation ................35
On-vehicle Service.....................................................15 Throttle Control + Engine Control TCS System
Removal.....................................................................15 Configuration (Tandem Throttle System)...................35 IDX
Inspection...................................................................15 Secondary Throttle Fully-closed Position Self-
Installation..................................................................15 learning Control .........................................................36
VACUUM HOSE.............................................................17 Removal and Installation ...........................................37
Removal and Installation ...........................................17 TROUBLE DIAGNOSES ...............................................41
Inspection...................................................................17 How to Perform Trouble Diagnoses for Quick
FRONT DISC BRAKE ...................................................18 and Accurate Repair ..................................................41
Pad Replacement ......................................................18 Symptom Chart..........................................................45
Components...............................................................19 Preliminary Check (Check brake fluid level in
Removal.....................................................................19 reservoir tank and brake line for leakage.) ...............48
CONTENTS (Cont'd)
Component Parts and Harness Connector ACTUATOR/THROTTLE MOTOR: Throttle motor
Location .....................................................................49 circuit) ......................................................................104
Schematic ..................................................................50 Diagnostic Procedure 18 (THROTTLE MOTOR
Wiring Diagram - TCS -.............................................51 RLY [SHORT] (-a)/THROTTLE MOTOR RLY
Self-diagnosis for ABS/TCS Control Unit ..................59 [OPEN] (-b): Throttle motor relay circuit for open
CONSULT-II for ABS/TCS Control Unit.....................62 circuit and short circuit) ...........................................105
CONSULT-II Inspection Procedure for ABS/TCS Diagnostic Procedure 19 (TH P/S PWR SUPPLY:
Control Unit................................................................63 Power supply circuit for sensor) ..............................108
Self-diagnosis for TAC Module ..................................70 Diagnostic Procedure 20 (THRTL/V RETURN
CONSULT-II for TAC Module.....................................72 SPR: Secondary throttle return spring) ...................108
CONSULT-II Inspection Procedure for TAC Diagnostic Procedure 21 (ENGINE START SIG:
Module .......................................................................73 Start signal circuit) ...................................................109
Ground Circuit Check ................................................79 Diagnostic Procedure 22 (NEUTRAL POSI SW:
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC Park/Neutral position (PNP) switch circuit) .............110
ITEMS.............................................................................80 TROUBLE DIAGNOSES FOR SYMPTOMS...............112
Diagnostic Procedure 1 (Engine system)..................80 Diagnostic Procedure 23 (SLIP indicator does
Diagnostic Procedure 2 (TCM COMM: TAC not come on when ignition switch is turned on.).....112
module communication).............................................80 Diagnostic Procedure 24 (TCS OFF indicator
Diagnostic Procedure 3 (Engine speed signal).........83 does not come on when ignition switch is turned
Diagnostic Procedure 4 (LAN SIGNAL 1: LAN on.)...........................................................................113
monitoring) .................................................................84 Diagnostic Procedure 25 (ABS warning lamp
Diagnostic Procedure 5 (LAN SIGNAL 2: LAN does not come on when ignition switch is turned
communication start procedures incomplete)............85 on.)...........................................................................114
Diagnostic Procedure 6 (LAN CIRCUIT 1/LAN Diagnostic Procedure 26 (ABS warning lamp
CIRCUIT 2: LAN communication system failure)......86 stays on when ignition switch is turned on.) ...........116
Diagnostic Procedure 7 (Wheel sensor or rotor) ......87 Diagnostic Procedure 27 (TCS OFF switch is
Diagnostic Procedure 8 (ABS actuator solenoid inoperative.) .............................................................119
valve) .........................................................................89 Diagnostic Procedure 28
Diagnostic Procedure 9 (Solenoid valve relay) .........90 (ABS works frequently.) ...........................................120
Diagnostic Procedure 10 (Motor relay or motor).......93 Diagnostic Procedure 29
Diagnostic Procedure 11 (BATTERY VOLT: Low (Unexpected pedal action).......................................121
voltage) ......................................................................96 Diagnostic Procedure 30
Diagnostic Procedure 12 (Control unit) .....................97 (Long stopping distance) .........................................121
Diagnostic Procedure 13 (Power supply and Diagnostic Procedure 31
ground circuit for TAC module)..................................98 (ABS does not work.) ..............................................122
Diagnostic Procedure 14 (THROTTLE POSI Diagnostic Procedure 32
SEN: Throttle position sensor signal input circuit) ..100 (Pedal vibration and noise)......................................122
Diagnostic Procedure 15 (THROTTLE POSI Electrical Component Inspection .............................123
SEN2: Secondary throttle position sensor signal TROUBLE DIAGNOSES FOR TCS ............................125
input circuit) .............................................................101 Electrical Component Inspection .............................125
Diagnostic Procedure 16 (THRTL POS/S-2 SIG: SERVICE DATA AND SPECIFICATIONS (SDS) ........128
Secondary throttle valve operating signal circuit General Specifications.............................................128
and throttle valve opening signal circuit).................102 Inspection and Adjustment ......................................128
Diagnostic Procedure 17 (THROTTLE
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