Yamaha Mt 01 T 2005 Manual
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ELECTRIC STARTING SYSTEM 7-6 3. Main switch 4. Battery 6. Starter relay 7. Starter motor 8. Main fuse 10.ECU fuse 13.Relay unit 14.Starting circuit cut-off relay 16.Neutral switch 19.Sidestand switch 29.ECU (electronic control unit) 38.Decompression solenoid 56.Clutch switch 70.Auto decompression fuse 73.Engine stop switch 74.Start switch 81.Ignition fuse
ELECTRIC STARTING SYSTEM 7-7 EAS27180STARTING CIRCUIT CUT-OFF SYSTEM OPERATION If the engine stop switch is set to “” and the main switch is turned “ON” (both switch circuits 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 circuit is closed). The clutch lever is pulled to the handlebar (the clutch switch circuit is closed) and the sidestand is up (the sidestand switch circuit is closed). The starting circuit cut-off relay prevents the starter motor from operating when neither of these condi- tions has been met. In this instance, the starting circuit cut-off relay stays 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 pushing the start switch “”. 13 1 15 1412 4 5 11 7 7 a b9 7 10 8 166 2 3 17
ELECTRIC STARTING SYSTEM 7-8 a. WHEN THE TRANSMISSION IS IN NEUTRAL 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. Relay unit (starting circuit cut-off relay) 7. Relay unit (diode) 8. Clutch switch 9. Sidestand switch 10.Neutral switch 11.Start switch 12.Starter relay 13.Starter motor 14.ECU fuse 15.Auto decompression fuse 16.Decompression solenoid 17.ECU (electronic control unit)
ELECTRIC STARTING SYSTEM 7-9 EAS27190TROUBLESHOOTING The starter motor fails to turn. NOTE: Before troubleshooting, remove the following part(s): 1. Seat 2. Fuel tank 3. Air filter case 4. Oil tank NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ 1. Check the fuses. (Main, ignition, auto decompression, and ECU) Refer to “CHECKING THE FUSES” on page 7-93.Replace the fuse(s). 2. Check the battery. Refer to “CHECKING AND CHARGING THE BATTERY” on page 7-94.Clean the battery terminals. Recharge or replace the battery. 3. Check the starter motor. Refer to “CHECKING THE STARTER MOTOR” on page 5-72.Repair or replace the starter motor. 4. Check the relay unit (starting circuit cut-off relay). Refer to “CHECKING THE RELAYS” on page 7-96.Replace the relay unit. 5. Check the relay unit (diode). Refer to “CHECKING THE RELAY UNIT (DIODE)” on page 7-98.Replace the relay unit. 6. Check the starter relay. Refer to “CHECKING THE RELAYS” on page 7-96.Replace the starter relay. 7. Check the main switch. Refer to “CHECKING THE SWITCHES” on page 7-89.Replace the main switch/immobilizer unit.
ELECTRIC STARTING SYSTEM 7-10 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 7-89.Replace the right handlebar switch. 9. Check the neutral switch. Refer to “CHECKING THE SWITCHES” on page 7-89.Replace the neutral switch. 10.Check the sidestand switch. Refer to “CHECKING THE SWITCHES” on page 7-89.Replace the sidestand switch. 11.Check the clutch switch. Refer to “CHECKING THE SWITCHES” on page 7-89.Replace the clutch switch. 12.Check the start switch. Refer to “CHECKING THE SWITCHES” on page 7-89.Replace the right handlebar switch. 13.Check the decompression solenoid. Refer to “CHECKING THE DECOMPRESSION SOLENOID” on page 7-105.Replace the decompression solenoid. 14.Check the entire starting system wiring. Refer to “CIRCUIT DIAGRAM” on page 7-5.Properly connect or repair the starting system wiring. The starting system circuit is OK.
CHARGING SYSTEM 7-11 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM B1 B2 B1B2 R/G B2 LgY/L R/W B B B ON OFF BBB R R B BYL BG L/G L/G B(BLUE) L/G B (BLUE) (DARK GREEN)B B WL B LW/YB/L B B LB/L B GBR/L B/LGy1 Gy B LB/LW/Y L B/LB/L Br/YBr/W P/W (BLACK) (BLACK)(BLACK) (BLACK)BrB B/L B/L P/Y L Y/G B/L Y/GLY YD B BB L LD Br Br Br B D R R Br Br/LBr/R Br/G R Gy/R R RRR R/BBr/W BB RR RBB R/W R/WR L L B BB3 BB2 BB1 BB4BB BB B1BB4BB3BB2BB1 Br/WB/L B/LL P/YY(BLACK)LB Sb BSb R/LL/RL/YB/R L/W1 Sb/WSb R L (BLACK) (BLACK)BR BB B RRBr/L Br/LBr/R Br/R R R/LB BB B/Y Br/RBr/L B2 B/LGy1 B R/G R/G Y/L R/WLgB2 Sb/W R/LL/W1 L/Y L/GSbL /R B /R B/YL R BB2 Lg R/W Y/LR/G B/L Br/Y P/W (BLACK) (BLACK) B/LL
CHARGING SYSTEM 7-12 1. AC magneto 2. Rectifier/regulator 4. Battery 8. Main fuse
CHARGING SYSTEM 7-13 EAS27220TROUBLESHOOTING The battery is not being charged. NOTE: Before troubleshooting, remove the following part(s): 1. Seat NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ NG → OK ↓ 1. Check the fuse. (Main) Refer to “CHECKING THE FUSES” on page 7-93.Replace the fuse. 2. Check the battery. Refer to “CHECKING AND CHARGING THE BATTERY” on page 7-94.Clean the battery terminals. Recharge or replace the battery. 3. Check the stator coil. Refer to “CHECKING THE STATOR COIL” on page 7-101.Replace the stator assembly. 4. Check the rectifier/regulator. Refer to “CHECKING THE RECTIFIER/REGULATOR” on page 7-101.Replace the rectifier/regulator. 5. Check the entire charging system wiring. Refer to “CIRCUIT DIAGRAM” on page 7-11.Properly connect or repair the charging system wiring. This circuit is OK.
LIGHTING SYSTEM 7-15 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM Br/W B L/B R/Y B/YPGY BDg Ch Br/W L/YG/L R/Y B/Y B G Y B Dg Ch B1 B2 B1B2 R/GB2 LgY/L R/W B B BL G G Sb/W R/GLg Dg R/WCh Y/L Y/L YLR/W R/G Lg B B ON OFF BBB R R B BYL BG L/GL/GB(BLUE) L/G B (BLUE) (DARK GREEN)B B B3B3 WL B LW/YB/L B B LB/L B GBR/L B Y B G B/LGy1 Gy B LB/LW/Y L B/LB/L Br/YBr/W P/W (BLACK) (BLACK)(BLACK) (BLACK)BrB LgBr/B Br/B R/B R/BR/G P/L W/G Br/L B/BrB/Br P/YP/W P/LW/GW/RBr/LR/G P/LW/GBr/LR/G R/B B/L B/L P/Y L Y/GB/L Y/GL Gy/BB/R GG/RB/LG G/RB/LGy/RW/R Gy/G Sb/W WG (GRAY)WGy(DARK GRAY) (BLACK) (BLACK) (BLACK) LgL Gy/RLg BB G G G W B YYD BBBLLD BrBr Br B D (BLACK) (BLACK) (BLACK) (BLACK) B B/YL/Y (BROWN) (BROWN)Y Br W/B L/W1 B/RR/WYBr(BLUE) (BLACK) (BLACK)R R (GRAY)(GRAY) R/WL/W R/B B B/YB(BLUE) Y L/W1 B/RR/W Br Y L B LY BLYB Br LLBBr/LBr/LBr/LR/BG/Y R/W Br/R Br/G R Gy/R R R BRR R/BBr/W BBRR RBBR/WR/WR LL B OOB/R OOB/RA WIRE HARNESS WIRE HARNESS WIRE HARNESS WIRE HARNESS SUB-WIRE-HARNESS1 SUB-WIRE-HARNESS2 SUB-WIRE-HARNESS2 SUB-WIRE-HARNESS3WG B Gy B Gy WG(BLACK) (BLACK)B ChB BDg ChBBDgCLL YY Br Br D YBr B B B LL B G/YBr/WR/BL BB3 BB2 BB1 BB4BB BB Y YG GL/R L/RB B (GRAY) (GRAY)(BLACK) (BLACK) DgB B L ChBBCh B B Ch B Dg Dg (BLACK) (BLACK)BBB Dg Dg GG Y/B R/Y G/L R/Y B1BB4BB3BB2BB1 Br/WB/L B/LL P/YY(BLACK)LB SbBSb R/LL/RL/YB/R L/W1 Sb/WSb R L (BLACK) (BLACK)BR BB B RRBr/L Br/LBr/R Br/R R R/BR/BR/LL/RW/BG/YY/GR/W R/W W/YYBr/YBr/WLBrB/LL/YL/W Gy/RB/R Gy/W B/RB/R W/R B/GB/R B/LL LgDgChL B G Y/L R/G R/L B/L R/W Gy/G Gy/W SbDgCh Y BB WL R/LGy/W Gy/GB/L (GRAY) (GRAY)BBChB Ch Br/GBr/WBr/W B/GB/R B/GB/R G/RY/LGOO OO GyY/B Y/BG/LG/L R/Y R/YR/Y B B (BLACK) B ChDg B Br/WBr/G Y B L/R LB Br/W R/Y Br GyGyGyBWWB C C Gy1 W R/LB BB B/Y W/B Br/RBr/L B2 B/LGy1 R/B Gy/BGy/R B/Y Y B R/G R/G Y/LR/WLgB2 G/R Dg Ch Dg Ch Dg Ch C C B B B B B/L O B/RB/R OA A OOA Br/BR/W Y Sb/W R/LL/W1 L/Y L/GSbL /R B /RB/YL R BB2 LgR/WY/LR/G B/L Br/Y G/Y Br/B B/RY/B Gy Lg O OGy/R Gy/B Gy/WB/GB3 B3GG/R Y/GBr/LB/Y Y/L Gy1 L/RL/Y R/L R/W Y W/Y W/B W/R W/G R/B R/BR/G BrGy/GBr/Y P/WP/L P/Y Br/W B/Br B/BrB/L L/W L P/W (BLACK) (BLACK) B/LL