Yamaha Fz6 N Service Manual
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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.
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.