Troubleshooting

IGNITION SYSTEM

EAS27140

TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
NOTE:
• Before troubleshooting, remove the following part(s):
1. Front cowling assembly
2. Fuel tank
3. T-bar
4. Throttle bodies

   1. Check the fuses.                          NG →
      (Main and ignition)
                                                            Replace the fuse(s).
      Refer to “CHECKING THE FUS-
      ES” on page 8-217.
           OK ↓
   2. Check the battery.                        NG →
      Refer to “CHECKING AND                                • Clean the battery terminals.
      CHARGING THE BATTERY” on                              • Recharge or replace the battery.
      page 8-218.

           OK ↓
   3. Check the spark plugs.                    NG →
      Refer to “CHECKING THE SPARK                          Re-gap or replace the spark plug(s).
      PLUGS” on page 3-11.

           OK ↓
   4. Check the ignition spark gap.             OK →
      Refer to “CHECKING THE IGNI-                          Ignition system is OK.
      TION SPARK GAP” on page 8-227.
           NG ↓
   5. Check the spark plug caps.                NG →
      Refer to “CHECKING THE SPARK                          Replace the spark plug cap(s).
      PLUG CAPS” on page 8-226.

           OK ↓
   6. Check the ignition coils.                 NG →
      Refer to “CHECKING THE IGNI-                          Replace the ignition coil(s).
      TION COILS” on page 8-226.

           OK ↓
   7. Check the crankshaft position sen-        NG →
      sor.
      Refer to “CHECKING THE CRANK-                         Replace the crankshaft position sensor.
      SHAFT POSITION SENSOR” on
      page 8-227.

           OK ↓

                                                 8-10
                                                             IGNITION SYSTEM

8. Check the main switch.              NG →
   Refer to “CHECKING THE                      Replace the main switch.
   SWITCHES” on page 8-211.

      OK ↓
9. Check the engine stop switch.       NG →
   Refer to “CHECKING THE                      Replace the right handlebar switch.
   SWITCHES” on page 8-211.

      OK ↓
10.Check the gear position switch.     NG →
   (FJR13A)
                                               Replace the gear position switch.
   Refer to “CHECKING THE
   SWITCHES” on page 8-211.

      OK ↓
11.Check the neutral switch.           NG →
   (FJR13AE)
                                               Replace the neutral switch.
   Refer to “CHECKING THE
   SWITCHES” on page 8-211.
      OK ↓
12.Check the sidestand switch.         NG →
   Refer to “CHECKING THE                      Replace the sidestand switch.
   SWITCHES” on page 8-211.

      OK ↓
13.Check the relay unit (diode).       NG →
   Refer to “CHECKING THE RELAY                Replace the relay unit.
   UNIT (DIODE)” on page 8-225.

      OK ↓
14.Check the lean angle sensor.        NG →
   Refer to “CHECKING THE LEAN                 Replace the lean angle sensor.
   ANGLE SENSOR” on page 8-227.

      OK ↓
15.Check the entire ignition system    NG →
   wiring.
   Refer to “CIRCUIT DIAGRAM (1/2)
   (FJR13A)” on page 8-1, “CIRCUIT
                                               Properly connect or repair the ignition sys-
   DIAGRAM (2/2) (FJR13A)” on page
                                               tem wiring.
   8-3, “CIRCUIT DIAGRAM (1/2)
   (FJR13AE)” on page 8-5, and “CIR-
   CUIT DIAGRAM (2/2) (FJR13AE)”
   on page 8-7.

      OK ↓
Replace the ECU.

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       IGNITION SYSTEM

8-12