Yamaha Fz1n Service Manual
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AIR INDUCTION SYSTEM 7-15 Out of specification → Replace the reed valve. 4. Check: Air cut-off valveCracks/damage → Replace. 5. Check Air induction system solenoid ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Remove the air induction system solenoid coupler from the wire harness. b. Connect the pocket tester ( Ω × 1) to the air induction system solenoid terminals as shown. c. Measure the air induction system solenoid resistance. d. Out of specification → Replace. ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ EAS27070 INSTALLING THE AIR INDUCTION SYSTEM 1. Install: Plate Reed valve assembly Reed valve cap 2. Install: Air cut-off valve Air cut-off valve hose 1 Air cut-off valve hose 2 Air cut-off valve hose 3 Air cut-off valve coupler Reed valve bending limit 0.4 mm (0.016 in) Positive tester probe Brown terminal “1” Negative tester probe Brown/Red terminal “2” Air induction system solenoid resistance18–22 Ω at 20 °C (68 °F)
8 ELECTRICAL SYSTEM IGNITION SYSTEM....................................................................................... 8-1 CIRCUIT DIAGRAM................................................................................ 8-1 TROUBLESHOOTING ............................................................................ 8-3 ELECTRIC STARTING SYSTEM .................................................................. 8-5 CIRCUIT DIAGRAM................................................................................ 8-5 STARTING CIRCUIT CUT-OFF SYST EM OPERATION ......................... 8-7 TROUBLESHOOTING ............................................................................ 8-9 CHARGING SYSTEM ................................................................................. 8-11 CIRCUIT DIAGRAM.............................................................................. 8-11 TROUBLESHOOTING .......................................................................... 8-13 LIGHTING SYSTEM ................................................................................... 8-15 CIRCUIT DIAGRAM (FZ1-N) ................................................................ 8-15 CIRCUIT DIAGRAM (FZ1-S) ................................................................ 8-17 TROUBLESHOOTING .......................................................................... 8-19 SIGNALING SYSTEM ................................................................................. 8-21 CIRCUIT DIAGRAM.............................................................................. 8-21 TROUBLESHOOTING .......................................................................... 8-23 COOLING SYSTEM .................................................................................... 8-27 CIRCUIT DIAGRAM.............................................................................. 8-27 TROUBLESHOOTING .......................................................................... 8-29 FUEL INJECTION SYSTEM ....................................................................... 8-31 CIRCUIT DIAGRAM.............................................................................. 8-31 TROUBLESHOOTING .......................................................................... 8-33 ECU SELF-DIAGNOSTIC FUNCTION ................................................. 8-37 SELF-DIAGNOSTIC FUNCTION TABLE .............................................. 8-38 TROUBLESHOOTING METHOD ......................................................... 8-41 DIAGNOSTIC MODE ............................................................................ 8-42 TROUBLESHOOTING DETAILS .......................................................... 8-50 FUEL PUMP SYSTEM ................................................................................ 8-75 CIRCUIT DIAGRAM.............................................................................. 8-75 TROUBLESHOOTING .......................................................................... 8-77 IMMOBILIZER SYSTEM ............................................................................. 8-79 CIRCUIT DIAGRAM.............................................................................. 8-79 GENERAL INFORMATION ................................................................... 8-81 KEY CODES REGISTRATION METHOD............................................. 8-81 TROUBLESHOOTING .......................................................................... 8-85 SELF-DIAGNOSIS ERROR CODE INDICATION ................................. 8-85
ELECTRICAL COMPONENTS................................................................... 8-89 CHECKING THE SWITCHES............................................................... 8-93 CHECKING THE BULBS AND BULB SOCKETS ................................. 8-96 CHECKING THE FUSES...................................................................... 8-97 CHECKING AND CHARGING THE BATTERY..................................... 8-97 CHECKING THE RELAYS .................................................................. 8-100 CHECKING THE TURN SIGNAL/HAZARD RELAY ........................... 8-102 CHECKING THE RELAY UNIT (DIODE) ............................................ 8-102 CHECKING THE IGNITION COILS .................................................... 8-103 CHECKING THE CRANKSHAFT POSITION SENSOR ..................... 8-104 CHECKING THE LEAN ANGLE SENSOR ......................................... 8-105 CHECKING THE STARTOR MOTOR OPERATION ........................... 8-105 CHECKING THE STARTOR COIL ...................................................... 8-106 CHECKING THE RECTIFIER/REGULATOR ...................................... 8-106 CHECKING THE HORN ..................................................................... 8-106 CHECKING THE FUEL SENDER ...................................................... 8-107 CHECKING THE SPEED SENS OR ................................................... 8-107 CHECKING THE RADIATOR FAN MOTOR........................................ 8-108 CHECKING THE COOLANT TEMPERATURE SENSOR .................. 8-108 CHECKING THE THROTTLE POSITION SENSOR .......................... 8-109 CHECKING THE SUB-THROTTLE PO SITION SENSOR .................. 8-110 CHECKING THE AIR INDUCTION SYSTEM SOLENOID ................. 8-110 CHECKING THE ATMOSPHERIC PRESSURE SENSOR ................. 8-111 CHECKING THE CYLINDER IDENTIFICATION SENSOR ................ 8-111 CHECKING THE INTAKE AIR PRE SSURE SENSOR ....................... 8-112 CHECKING THE INTAKE AIR TEM PERATURE SENSOR ................ 8-112
IGNITION SYSTEM 8-1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM
IGNITION SYSTEM 8-2 1. Main switch 6. Fuse (main) 7. Battery 11.Relay unit 12.Starting circuit cut-off relay 14.Neutral switch 15.Sidestand switch 17.Crankshaft position sensor 21.Lean angle sensor 23.ECU 24.Ignition coil #1 25.Ignition coil #2 26.Ignition coil #3 27.Ignition coil #4 28.Spark plug 56.Engine stop switch 60.Clutch switch 78.Fuse (ignition)
IGNITION SYSTEM 8-3 EAS27150 TROUBLESHOOTING The ignition system fails to operate (no spark or intermittent spark). NOTE: Before troubleshooting, remove the following part(s): 1 Rider and passenger seat 2 Fuel tankNG→ OK ↓ NG→ OK ↓ NG→ OK ↓ OK→ NG ↓ NG→ NG ↓ NG→ OK ↓ NG→ OK ↓ 1 Check the fuses. (Main and ignition) Refer to CHECKING THE FUSES on page 8-97. Replace the fuse(s). 2 Check the battery. Refer to CHECKING AND CHARGING THE BATTERY on page 8-97. Clean the battery terminals. Recharge or replace the battery. 3 Check the spark plugs. Refer to CHECKING THE SPARK PLUGS on page 3-10. Re-gap or replace the spark plugs. 4 Check the ignition spark gap. Refer to CHECKING THE IGNI- TION COILS on page 8-103. Ignition system is OK. 5 Check the ignition coils. Refer to CHECKING THE IGNI- TION COILS on page 8-103. Replace the ignition coils. 6 Check the crankshaft position sen- sor. Refer to CHECKING THE CRANKSHAFT POSITION SEN- SOR on page 8-104. Replace the crankshaft position sen- sor 7 Check the main switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the immobilizer kit.
IGNITION SYSTEM 8-4 NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ 8 Check the engine stop switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the right handlebar switch. 9 Check the neutral switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the neutral switch. 10 Check the sidestand switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the sidestand switch. 11 Check the clutch switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the clutch switch. 12 Check the starting circuit cut-off relay. Refer to CHECKING THE RELAYS on page 8-100. Replace the relay unit. 13 Check the lean angle sensor. Refer to CHECKING THE LEAN ANGLE SENSOR on page 8-105. Replace the lean angle sensor. 14 Check the entire ignition system’s wiring. Refer to CIRCUIT DIAGRAM on page 8-1. Properly connect or repair the ignition system’s wiring Replace the ECU
ELECTRIC STARTING SYSTEM 8-5 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM
ELECTRIC STARTING SYSTEM 8-6 1. Main switch 6. Fuse (main) 7. Battery 9. Starter relay 10.Starter motor 11.Relay unit 12.Starting circuit cut-off relay 14.Neutral switch 15.Sidestand switch 56.Engine stop switch 57.Start switch 60.Clutch switch 78.Fuse (ignition)