Yamaha Fz1n Service Manual
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ELECTRIC STARTING SYSTEM 8-7 EAS27180 STARTING CIRCUIT CUT-OFF SYSTEM OPERATION If the engine stop switch is set to “ ” and the main switch is set to “ON” (both switches are closed), the starter motor can only operate if at least one of the following conditions is met: The transmission is in neutral (the neutral switch is closed). The clutch lever is pulled to the handlebar (the clutch switch is closed) and the sidestand is up (the sidestand switch is closed). The starting circuit cut-off relay prevents the starte r motor from operating when neither of these con- ditions has been met. In this instance, the starting circuit cut-off relay is open so current cannot reach the starter motor. When at least one of the above conditions has been met the starting circuit cut-off relay is closed and the engine can be started by pressing the starter switch.
ELECTRIC STARTING SYSTEM 8-8 a. WHEN THE TRANSMISSION IS IN NEU-TRAL b. WHEN THE SIDESTAND IS UP AND THE CLUTCH LEVER IS PULLED TO THE HANDLEBAR 1. Battery 2. Main fuse 3. Main switch 4. Ignition fuse 5. Engine stop switch 6. Starting circuit cut-off relay 7. Diode 8. Clutch switch 9. Sidestand switch 10.Neutral switch 11.Start switch 12.Starter relay 13.Starter motor
ELECTRIC STARTING SYSTEM 8-9 EAS27190 TROUBLESHOOTING The starter motor fails to turn. NOTE: Before troubleshooting, remove the following part(s): 1 Rider and passenger seat 2 Fuel tank 3 Air filter caseNG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ 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 starter motor operation. Refer to CHECKING THE STAR- TOR MOTOR OPERATION on page 8-105. Replace the starter motor. 4 Check the starter motor. Refer to CHECKING THE STARTER MOTOR on page 5-42. Repair or replace the starter motor. 5 Check the relay unit (starting circuit cut-off relay). Refer to CHECKING THE RELAYS on page 8-100. Replace the relay unit. 6 Check the relay unit (diode). Refer to CHECKING THE RELAYS on page 8-100. Replace the relay unit. 7 Check the starter relay. Refer to CHECKING THE RELAYS on page 8-100. Replace the starter relay.
ELECTRIC STARTING SYSTEM 8-10 NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ 8 Check the main switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the immobilizer kit. 9 Check the engine stop switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the right handlebar switch. 10 Check the neutral switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the neutral switch. 11 Check the sidestand switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the sidestand switch. 12 Check the clutch switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the clutch switch. 13 Check the start switch. Refer to CHECKING THE SWITCHES on page 8-93. Replace the right handlebar switch. 14 Check the entire starting system’s wiring. Refer to CIRCUIT DIAGRAM on page 8-5. Properly connect or repair the starting system’s wiring The starting system circuit is OK.
CHARGING SYSTEM 8-11 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM
CHARGING SYSTEM 8-12 2. Rectifier/regulator 3. A.C.magneto 6. Fuse (main) 7. Battery
CHARGING SYSTEM 8-13 EAS27230 TROUBLESHOOTING The battery is not being charged. NOTE: Before troubleshooting, remove the following part(s): 1 Rider and passenger seatNG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ NG→ OK ↓ 1 Check the fuse. (Main) Refer to CHECKING THE FUSES on page 8-97. Replace the fuse. 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 stator coil. Refer to CHECKING THE STATOR COIL on page 8-106. Replace the startor assembly. 4 Check the rectifier/regulator. Refer to CHECKING THE RECTI- FIER/REGULATOR on page 8- 106. Replace the rectifier/regulator. 5 Check the entire charging system’s wiring. Refer to CIRCUIT DIAGRAM on page 8-11. Properly connect or repair the charg- ing system’s wiring. This circuit is OK.
LIGHTING SYSTEM 8-15 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM (FZ1-N)
LIGHTING SYSTEM 8-16 1. Main switch 6. Fuse (main) 7. Battery 23.ECU 49.High beam indicator light 52.Meter light 61.Pass switch 62.Dimmer switch 72.Auxiliary light 73.Headlight 74.License plate light 75.Tail/brake light 76.Headlight relay (on/off) 77.Fuse (tail light)) 81.Fuse (headlight)