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Yamaha Fz6 N Service Manual

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    Page
    of 538
    							
    FUEL PUMP SYSTEM
    8-58
    1. Main switch
    5. Fuel injection system fuse
    7. Main fuse
    10.Battery
    11.Starting circuit cut-off relay
    14.Fuel pump
    22.ECU (engine control unit)
    56.Engine stop switch
    64.Ignition fuse 
    						
    							
    FUEL PUMP SYSTEM
    8-59
    EAS27570
    TROUBLESHOOTING
    If the fuel pump fails to operate.
    NOTE:
     Before troubleshooting, remove the following part(s):
    1.Seat
    2.Front cowling inner panel3
    3.Fuel tankNG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    1. Check the fuses.
    (Main, ignition and fuel injection 
    system)
    Refer to CHECKING THE 
    FUSES on page 8-113. Replace the fuse(s).
    2. Check the battery. Refer to CHECKING AND 
    CHARGING THE BATTERY on 
    page 8-114.  Clean the battery terminals.
     Recharge or replace the battery.
    3. Check the main switch. Refer to CHECKING THE 
    SWITCHES on page 8-109. Replace the main switch.
    4. Check the engine stop switch. Refer to CHECKING THE 
    SWITCHES on page 8-109. Replace the right handlebar switch.
    5. Check the starting circuit cut-off  relay.
    Refer to CHECKING THE 
    RELAYS on page 8-117. Replace the starting circuit cut-off 
    relay.
    6. Check the fuel pump. Refer to CHECKING THE FUEL 
    PRESSURE on page 7-6. Replace the fuel pump.
    7. Check the entire fuel pump sys- tem’s wiring.
    Refer to CIRCUIT DIAGRAM on 
    page 8-1. Properly connect or repair the fuel 
    pump system’s wiring.
    Replace the ECU. 
    						
    							
    FUEL PUMP SYSTEM
    8-60 
    						
    							
    IMMOBILIZER SYSTEM
    8-61
    EAS27640
    IMMOBILIZER SYSTEM
    EAS27650
    CIRCUIT DIAGRAM
    ChB
    P
    G/L Y/L R/GLgB/W
    G/L
    Y/L
    R/G
    G/R
    G/RLgB/W
    R/B
    R/LG/BR/LG/BR/LG/B
    R/B R/L
    G/B
    R/B23R/L
    R/L
    R/LR/BR/L24
    25
    26
    27
    R/WBr/RR/W
    Br/R
    15L
    Y
    B/L
    D
    G/W
    G/WD
    Br/W Br/W D
    P/W P/W D
    B/L B/L
    B/LBr/W
    LB/LP/W
    16
    2021
    B/LG/WB/L B/L
    L
    A
    B/W A
    Y/L D
    YY
    C
    LL C
    R/L
    C G/B
    C
    R/B
    B/L
    22
    R/L
    B/L
    G/WBr/WYP/WB/L
    G/WBr/WYP/WB/L
    18
    L
    L
    P/W
    P/W
    R/B
    R/L
    G/B
    L
    B/Y
    B/LY/GL
    B/R
    Y/B
    W/Y B/L
    B/L
    L G/Y
    R/B R/L
    G/B L
    B/L35
    3637
    37
    Y/L
    19Gy
    B
    Gy B/L
    R/B
    17B
    B
    L
    W
    R/W P/BGy/GB/L
    R/B
    Y/L R/L
    Y/G Y/G L/Y
    R/W
    Gy
    Gy
    Y
    Y
    Br/W
    Br/W
    G/W
    G/W
    R/WL/R
    B/YBB/GG/WW
    Ch
    Dg
    B BBr/R R/B R/B
    G/B G/B
    L/W
    P/B P/B
    Gy/G
    Gy/G
    O/B O/B
    Gy/B Gy/B
    B/W
    R/W
    B/W
    YW/YG/WGy/GB/LB/RB/YL/Y
    Y/LP/B
    Y/RBG/Y
    R/BGy/B Br/W
    Y/GP/WLB/W
    R/WR/LL/WGyBr/RBY/BG/BO/B
    Ch38 39
    40
    42
    44 45
    46
    47
    48
    49
    50
    50
    43
    41R/Y
    LgY/LWG/W
    R/WR/G G/R
    Ch
    DgB/WR/YYG/L
    B
    L/R
    B W
    W
    B
    R/W
    R/W
    B
    G/W
    G/W A
    L/RBL/RB
    B
    R/GR/G
    B/W Y/L
    B B/GB
    B/Y B
    Dg A
    G/L
    G/L
    A
    Dg
    B
    Ch B
    Lg
    Lg
    B/Y
    51
    B/Y
    62
    65
    OFF
    RUN
    77
    FREE
    PUSH
    R/Y
    67
    B B
    B
    7
    R
    R/W210G/YL/W
    R/WR/BB
    Br
    G/YW/L R/WR/BBBr R
    R/WL/W
    9
    78R R/W2
    L/G L/G
    R/W
    R/W
    69
    B
    Br/L
    64
    Y
    L
    B HI
    LO
    W/L
    W/L
    Y/B
    Br
    BrOFF
    ON
    8
    L
    N
    R
    63
    YL BL
    L/W
    Br/L
    61
    Br/W
    Br/L
    Br/L
    OFF
    ON ON
    Y Y
    B
    Dg
    Y
    L/B
    Br/WR/Y
    Ch
    L/Y
    G
    BB/YBrR/YGY/B
    R/Y
    R/Y
    Dg Y
    L/BBr/WR/Y
    ChB/RBB/YBr
    13
    B
    BBrYBr
    G/Y
    5B
    R
    R
    L/W
    L/W
    R/B
    B84B/Y
    B/Y
    12B
    BL/GB
    71 72 73 74 75 76
    70
    B/R
    B/R11
    R/Y
    R/Y66
    Ch
    B
    85
    R28
    Br
    R/W2
    Y
    Y
    L/BDg
    B
    Br/WBr/G
    Br/GBr/GBr/W
    Br/WCh
    Ch Dg
    Dg
    Ch Dg
    BG/W
    R/W
    B
    R/L
    G
    G
    B
    B
    L/YB/Y
    Dg B
    W
    Br
    B R/W
    Sb Sb
    R/L R/L
    52
    68
    L/R
    R/L
    W/L
    R/B
    L/W
    R
    Lg
    B/Y
    Sb
    B/R
    L/GR/WL/YL/W
    Br/R
    WB R/B
    L/Y
    SbSb
    R/W
    AG/R
    G/R
    B
    14
    BL
    W W G/W
    G/W
    G/L
    Lg
    Lg
    82Ch B Ch
    B
    80 79
    81
    79 83
    B
    B B
    B L/R
    Dg
    B
    Dg
    B
    L/R
    BB
    BB B/Y B
    B/G B
    BB/G
    B/Y
    Dg
    Ch
    B R
    R
    R
    Br/BBr/B
    2W
    W
    W WW
    W
    4R
    WW
    WW
    WW
    53 54
    56
    55 57R
    Br/LBB1
    58
    R/G
    BB3
    BB4
    BB
    BB
    Br/L
    BB
    BB
    B2 B1
    Br/BLG/Y
    R/W
    BB
    B2
    BB2
    BB3
    BB1
    BB4Br/RB
    59
    R/W
    3
    B
    L B
    L
    L
    L
    B
    G/Y R/W
    R
    Br/L B
    B B
    B/W
    BBB
    R/GY/LG/L R/W
    R
    B
    W
    W
    W
    B
    6
    BB2 B2Y/L
    B
    B2R/GY/LLgR/WBr/RBr/R
    ON
    OFF1
    60
    G/L
    R/G
    R/G
    R/WL/RYBG-G/WWChDg
    B/L
    WIRE SUB LEAD2D
    MAIN HARNESS WIRE SUB LEAD1
    C
    MAIN HARNESS CORD HEAD LIGHT2
    B
    MAIN HARNESS
    CORD HEAD LIGHT1A
    MAIN HARNESS
    OFF
    30
    Br/W
    W/R W/R
    29
    W/Y
    Sb
    B
    LgW/RSb B
    LgWRSb SbB
    31
    Br/WG/WW/BB
    B1
    Lg
    W/Y
    W/R
    Y/W
    L
    Lg Lg
    Br
    B/W
    B/W
    B
    R/Y
    G/W
    Y R/W
    B1 L
    W/B
    W/B
    R
    R
    R
    W/L W/L
    GG L
    L
    B1
    B1
    Y/W
    Y/W
    B
    B
    R/W3
    R/W3
    R/YW/LGB/WR/W
    WL/WB/WSb
    Y
    33
    BrR/W3W/BR
    32BY/W
    L/W
    34GL
    GL
    BR/W
    R
    RW/LG
    BR/W3
    W 
    						
    							
    IMMOBILIZER SYSTEM
    8-62
    1. Main switch
    4. Backup fuse
    6. Immobilizer unit
    7. Main fuse
    10.Battery
    22.ECU (engine control unit)
    39.Immobilizer indicator light
    44.Multi-function meter
    64.Ignition fuse 
    						
    							
    IMMOBILIZER SYSTEM
    8-63
    EAS27671
    GENERAL INFORMATION
    This vehicle is equipped with an immobilizer system to help prevent theft by re-registering codes in 
    the standard keys. This system consists of the following:
     a code re-registering key (with a red bow)
     two standard keys (with a black bow) that can be re-registered with new codes
     a transponder (installed in the red key bow)
     an immobilizer unit
    the ECU
     an immobilizer system indicator light
    The key with the red bow is used to register codes in each standard key. Do not use the key with the 
    red bow for driving. It should only be used for re-registering new codes in the standard keys. The 
    immobilizer system cannot be operated with a new ke y until the key registered with a code. If you 
    lose the code re-registering key, the ECU and main switch (equipped with the immobilizer unit) need 
    to be replaced.
    Therefore, always use a standard key for driving. (See caution below.)
    NOTE:
    Each standard key is registered during production, therefore re-registering at purchase is not neces-
    sary.
    CAUTION:
    ECA14971
     DO NOT LOSE THE CODE RE-REGISTERING KEY! If the code re-registering key is lost, reg- istering new codes in the standard keys is im possible. The standard keys can still be used 
    to start the vehicle. However, if code re-registering is required (e.g., if a new standard key is 
    made or all keys are lost) the entire immobilizer  system must be replaced. Therefore, it is 
    highly recommended to use either standard key for driving, and to keep the code re-regis-
    tering key in a safe place.
     Do not submerse the keys in water.
     Do not expose the keys to excessively high temperatures.
     Do not place the keys close to magnets (this includes, but is not limited to, products such  as speakers, etc.).
     Do not place heavy items on the keys.
     Do not grind the keys or alter their shape.
     Do not disassemble the key bows.
     Do not put two keys of any immobilizer system on the same key ring.
     Keep the standard keys as well as other immobilizer system keys away from the code re-
    registering key.
     Keep other immobilizer system keys away from the main switch as they may cause signal 
    interference.
    EAS27691
    PART REPLACEMENT AND KEY CODE REGISTRATION REQUIREMENTS
    In the course of use, you may encounter the foll owing cases where replacement of parts and regis-
    tration of code re-registering/standard keys are required.
    NOTE:
    Each standard key is registered during production, therefore re-registering at purchase is not neces-
    sary. 
    						
    							
    IMMOBILIZER SYSTEM
    8-64
    * Accessory locks mean the seat lock and fuel tank cap.
    Code re-registering key registration:
    When the immobilizer unit or ECU is replaced, the code re-registering key must be registered to the 
    unit.
    To register a code re-registering key:
    1. Turn the main switch to “ON” with the code re-registering key.
    NOTE:
    Check that the immobilizer system indicator light comes on for one second, then goes off. When the 
    immobilizer system indicator light goes off, the code re-registering key has been registered.
    2. Check that the engine can be started.
    3. Register the standard key, following the instructions in the section below. Parts to be replaced
    Key registration requirement
    Main switch/
    immobilizer unit Standard 
    key ECUAcces-
    sory lock*  and key
    Main 
    switch Immobi-
    lizer unit
    Standard key is lost √New standard key
    All keys have been 
    lost (including code 
    re-registering key) √ √√√ Code re-registering 
    key and standard 
    keys
    ECU is defective √Code re-registering 
    key and standard 
    keys
    Immobilizer unit is 
    defective √ Code re-registering 
    key and standard 
    keys
    Main switch is defec-
    tive √ √√√ Code re-registering 
    key and standard 
    keys
    Accessory lock* is 
    defective √
    Not required 
    						
    							
    IMMOBILIZER SYSTEM
    8-65
    Standby mode:
    To enable the immobilizer system, turn the ignition key to “OFF”. 30 seconds later, the indicator light 
    will start flashing continuously in the standby flashing mode pattern for up to 24 hours. After that 
    time, the indicator light will stop flashing , but the immobilizer system is still enabled.
    Standby mode
    Standard key registration:
    Standard key registration is required when a standard key is lost and needs to be replaced, or when 
    the code re-registering key is re-registered afte r the immobilizer unit or ECU are replaced.
    NOTE:
    Do not start the engine with a standard key that has not been registered. If the main switch is turned 
    “ON” with a standard key that has not been registered, the immobilizer system indicator light flashes 
    to indicate fault code “52”. (Refer to SELF-DIAGNOSIS FAULT CODE INDICATION on page 8-67).
    1. Check that the immobilizer system indicator light signals the standby mode.
    2. Using the code re-registering key, turn the main switch to “ON”, then “OFF”, and then remove the  key within 5 seconds.
    3. Insert the first standard key to be registered into the main switch, then turn the key to “ON” within 
    5 seconds to activate the key registration mode.
    NOTE:
    The existing standard key code is erased from the memory when the key registration mode is acti-
    vated. When the key registration mode is activated,  the immobilizer system indicator light flashes 
    rapidly.
    4. While the indicator light is flashing, turn the main switch to “OFF”, remove the key, and within 5 
    seconds, insert the second standard key to be registered into the main switch.
    NOTE:
    If he immobilizer system indicator light stops flas hing 5 seconds after the first standard key is regis-
    tered, the registration mode is deactivated. If this occurs, the second standard key cannot be regis-
    tered, and steps 2 to 4 need to be repeated to register both standard keys.
    5. Turn the main switch to “ON”.
    NOTE:
    When the indicator light goes off, the registration is complete.
    6. Check that the engine can be started with the two registered standard keys.
    a. Main switch “ON”
    b. Main switch “OFF”
    c. LED on d. LED off
    e. Standby mode on
    f. Standby mode off 
    						
    							
    IMMOBILIZER SYSTEM
    8-66
    Standard key registration
    Voiding the standard key code:
    If a standard key has been lost, it is possible to disable its use by re-registering the remaining stan-
    dard key. Standard key registration erases the stored standard key code from the memory, thus dis-
    abling the lost standard key.To re-register, refer to “Standard key registration”.
    Standard key code voiding method
    a. Main switch “ON”
    b. Main switch “OFF”
    c. LED on
    d. LED off
    e. Less than 5.0 s
    f. Code re-registering key
    g. First standard key h. Second standard key
    i. Registration mode
    A. Registration of the second standard key is 
    complete.
    B. Immobilizer system indicator light stops  flashing when the registration of the second 
    standard key is complete.
    a. Main switch “ON”
    b. Main switch “OFF”
    c. LED on
    d. LED off
    e. Less than 5.0 s
    f. Code re-registering key
    g. Remaining standard key
    h. Registration mode
    A. If the immobilizer system indicator light stops flashing 5 seconds after the first stan-
    dard key is registered, the second standard 
    key cannot be registered. 
    						
    							
    IMMOBILIZER SYSTEM
    8-67
    EAS27701
    TROUBLESHOOTING
    When the main switch is turned to “ON”, the immobilizer system indicator light does not come on nor 
    flashes.NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    NG→
    OK ↓
    EAS27721
    SELF-DIAGNOSIS FAULT CODE INDICATION
    When a system failure occurs, the error code number  is indicated in the LCD display of meter and 
    the immobilizer system indicator light blinks at t he same time. The pattern of blinking also shows the 
    error code. 1. Check the fuses.
    (Main, ignition and backup)
    Refer to CHECKING THE 
    FUSES on page 8-113. Replace the fuse(s).
    2. Check the battery. Refer to CHECKING AND 
    CHARGING THE BATTERY on 
    page 8-114.  Clean the battery terminals.
     Recharge or replace the battery.
    3. Check the main switch. Refer to CHECKING THE 
    SWITCHES on page 8-109. Replace the main switch/immobilizer 
    unit.
    4. Check the entire immobilizer sys- tem wiring.
    Refer to CIRCUIT DIAGRAM on 
    page 8-1. Properly connect or repair the immobi-
    lizer system wiring.
     Check the condition of the each  immobilizer system circuits.
     Refer to SELF-DIAGNOSIS FAULT  CODE INDICATION on page 8-67.
    Fault code Part Symptom Cause Action
    51 IMMOBILIZER 
    UNIT
    Code cannot be 
    transmitted between 
    the key and immobi-
    lizer unit. 1.Radio wave interfer-
    ence caused by 
    objects around the 
    keys and antennas.
    2.Immobilizer unit mal- function.
    3.Key malfunction. 1.Keep magnets, 
    metal objects, and 
    other immobilizer 
    system keys away 
    form the keys and 
    antennas.
    2.Replace the main 
    switch/immobi-
    lizer unit.
    3.Replace the key. 
    						
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