Yamaha Waverunner 3 Manual
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7-28 E –+ELECFUEL CONTROL SYSTEM FUEL CONTROL SYSTEM WIRING DIAGRAM #4 #3 #2 #1 5 7 P/W P/W P/W F O B/O P/G L/R B/O B/O B/O B/Y P/GB/O B/OR/Y R/Y R/Y R/Y R/Y R/Y Pu/G Pu/Y Pu/B Pu/R O OP R/YR/YR/Y B/O B/O B/Y B/O B/GB/G L/RBrL Y R/YR/Y R B R/Y R/Y B/YB/Y B/Y B/O B/Y B/O B/O B/O B/Y O P Y P OPu/R Pu/GPu/B B/O Pu/G Pu/B Pu/R Bu/Y B/YR/Y B/YB/OP/G R/Y Pu/Y P B/O R R R B/O B/OB/O B BB R/Y B B L B L B B B 63 2 1 B E E E EC D0 4 R/Y R/Y R/YR P P O R R R O 3 : P/W 5 : B/Y 7 : Y 8 : O 17 :L/B 18 : R/Y 19 : P/G20 : P 21 : B/Y 12 : W/B 23 : Pu/Y 24 : Pu/B 25 : Pu/R 26 : Pu/G 1 2 3 4 5 6 7 8 Pu/G R/Y Pu/Y R/Y Pu/B R/Y Pu/R R/Y R/Y R/Y B L P B B 4321 8765 A B/OL/B L/B B/O B/O P P B P B/O B P B/O PB PB 8 9 P O 1ECM 2Main and fuel pump relay 3Fuse (20A) 4Battery 5Fuel pump 6Multifunction meter 7Fuel sender 8Thermoswitch (exhaust) 9Thermoswitch (engine)0Engine temperature sensor ASlant detection switch BIntake air temperature sensor CIntake air pressure sensor DThrottle position sensor EFuel injector FOil pressure switch
7-29 E –+ELECFUEL CONTROL SYSTEM WIRING DIAGRAM #4 #3 #2 #1 5 7 P/W P/W P/W F O B/O P/G L/R B/O B/O B/O B/Y P/GB/O B/OR/Y R/Y R/Y R/Y R/Y R/Y Pu/G Pu/Y Pu/B Pu/R O OP R/YR/YR/Y B/O B/O B/Y B/O B/GB/G L/RBrL Y R/YR/Y R B R/Y R/Y B/YB/Y B/Y B/O B/Y B/O B/O B/O B/Y O P Y P OPu/R Pu/GPu/B B/O Pu/G Pu/B Pu/R Bu/Y B/YR/Y B/YB/OP/G R/Y Pu/Y P B/O R R R B/O B/OB/O B BB R/Y B B L B L B B B 63 2 1 B E E E EC D0 4 R/Y R/Y R/YR P P O R R R O 3 : P/W 5 : B/Y 7 : Y 8 : O 17 :L/B 18 : R/Y 19 : P/G20 : P 21 : B/Y 12 : W/B 23 : Pu/Y 24 : Pu/B 25 : Pu/R 26 : Pu/G 1 2 3 4 5 6 7 8 Pu/G R/Y Pu/Y R/Y Pu/B R/Y Pu/R R/Y R/Y R/Y B L P B B 4321 8765 A B/OL/B L/B B/O B/O P P B P B/O B P B/O PB PB 8 9 P O B: Black Br : Brown G: Green L: Blue O : Orange P: Pink R: Red W: White Y : YellowB/O : Black/orange B/Y : Black/yellow G/O : Green/orange L/B : Blue/black L/R : Blue/red P/G : Pink/green P/W : Pink/white Pu/B : Purple/black Pu/G : Purple/greenPu/R : Purple/red Pu/Y : Purple/yellow R/Y : Red/yellow W/B : White/black W/R : White/red
7-30 E –+ELECFUEL CONTROL SYSTEM FUEL PUMP 1. Check: Fuel pump operating sound Fuel pump does not sound → Measure the fuel pressure. Refer to “FUEL INJECTION SYSTEM” in Chapter 4. NOTE: After the engine is stopped, the fuel pump will operate for 10 seconds. FUEL SENDER 1. Measure: Fuel sender resistance Out of specification → Replace. Float positionResistance ( Ω) A91–93 B6–8
7-31 E –+ELECFUEL CONTROL SYSTEM FUEL INJECTOR Refer to “FUEL INJECTION SYSTEM” in Chapter 4. MAIN AND FUEL PUMP RELAY Refer to “IGNITION SYSTEM”. OIL PRESSURE SWITCH Refer to “IGNITION SYSTEM”. THERMOSWITCH (ENGINE) Refer to “IGNITION SYSTEM”. THERMOSWITCH (EXHAUST) Refer to “IGNITION SYSTEM”. SLANT DETECTION SWITCH Refer to “IGNITION SYSTEM”.
7-32 E –+ELECSTARTING SYSTEM STARTING SYSTEM WIRING DIAGRAM FREE PUSHBr BrFREE PUSHWBRBr 4321 8765 R/Y718R/Y L/RBrL Y R/YR/Y B R/Y R/Y Y R Br Br Br Br R Br R B B R 43 2 1 87 6 R/Y R/Y R P P O R R R R R R 1 2 3 4 5 6 7 8 B BB 5 Br BBB 1ECM 2Main and fuel pump relay 3Fuse (20A) 4Starter relay 5Starter motor 6Battery 7Start switch 8Engine shut-off switchB: Black Br : Brown R: Red Y : Yellow R/Y : Red/yellow
7-33 E –+ELECSTARTING SYSTEM BATTERY Refer to “ELECTRICAL” in Chapter 3. WIRING CONNECTIONS 1. Check: Wiring connections Poor connections → Properly connect. FUSE 1. Check: Fuse broken Broken → Replace. NOTE: 20A fuse is for main relay, engine shut-off switch and rectifier/regulator. 3A fuse is for multifunction meter and electric bilge pump. Fuse rating: 3A, 20A START SWITCH 1. Check: Continuity Out of specification → Replace. Start continuity (natural color coupler) Clip PositionLeads Red Brown Installed Free Push Removed Free Push
7-34 E –+ELECSTARTING SYSTEM STARTER RELAY 1. Inspect: Brown lead terminal Black lead terminal Loose → Tighten. 2. Check: Starter relay Faulty → Replace. Checking steps: Connect the tester leads between the starter relay terminals as shown. Connect the brown lead terminal to the positive battery terminal. Connect the black lead terminal to the negative battery terminal. Check that there is continuity between the starter relay terminals. Check that there is no continuity after the brown or black lead is removed. Br B
7-35 E –+ELECSTARTER MOTOR STARTER MOTOR EXPLODED DIAGRAM REMOVAL AND INSTALLATION CHART *: As requiredStep Procedure/Part name Q’ty Service points STARTER MOTOR DISASSEMBLYFollow the left “Step” for disassembly. Starter motor Refer to “GENERATOR AND STARTER MOTOR” in Chapter 5. 1 O-ring 1 2Bolt 2 3 Starter motor front cover 1 4 O-ring 1 5 Oil seal retainer 1 6 Washer 1 7 Shim * t = 0.2 mm, 0.5 mm Not reusable Not reusable
7-36 E –+ELECSTARTER MOTOR EXPLODED DIAGRAM *: As requiredStep Procedure/Part name Q’ty Service points 8 Starter motor rear cover 1 9 O-ring 1 10 Shim * t = 0.2 mm, 0.8 mm 11 Armature assembly 1 12 Nut/spring washer/washer 1/1/4 13 O-ring 1 14 Brush holder 1 15 Brush spring 4 16 Bolt 1 17 Brush assembly 1 Not reusable Not reusable
7-37 E –+ELECSTARTER MOTOR EXPLODED DIAGRAM Step Procedure/Part name Q’ty Service points 18 Spacer 1 19 Holder 1 20 Starter motor yoke 1 Reverse the disassembly steps for assembly.