Coil location and mounting bolts (arrowed)

probable source of failure. Work through the list systematically, referring to the subsequent sections for full details of the necessary checks and tests. Note:Before checking the following items ensure that the battery is fully charged and that all fuses are In good condition.

a) Loose, corroded or damaged wiring connections, broken or shorted wiring between any of the component parts of the ignition system (see Chapter 9).

b) Faulty HT lead or spark plug cap, faulty spark plug, dirty, worn or corroded plug electrodes, or incorrect gap between electrodes.

cj Faulty ignition (main) switch or engine kill switch (see Chapter 9).

d) Faulty neutral, clutch or sidestand switch (see Chapter 9).

e) Faulty pulse generator coil or damaged rotor.

f) Faulty ignition HT coil(s).

g) Faulty ignition control unit.

7 If the above checks don't reveal the cause of the problem, have the ignition system tested by a Honda dealer equipped with a special diagnostic tester.

3 Ignition HT coils - check,

removal and installation A.

Check

1 In order to determine conclusively that the ignition coils are defective, they should be tested by a Honda dealer equipped with a peak voltage tester.

2 However, the coils can be checked visually (for cracks and other damage) and the primary and secondary coil resistance can be measured with a multimeter. If the coils are undamaged, and if the resistance readings are as specified at the beginning of this Chapter, they are probably capable of proper operation.

3 Remove the fuel tank (see Chapter 4) and the seat (see Chapter 8). Unscrew the bolt retaining the battery cover, pull back the cover and disconnect the battery negative (-ve) lead.

4 The coils are mounted on a bracket behind the steering head.

5 Disconnect the primary circuit electrical connectors from the coil being tested and the HT lead from the spark plug. Note the locations of all wires before disconnecting them.

6 Set the meter to the ohms x 1 scale and measure the resistance between the primary circuit terminals (see illustration).This will give a resistance reading for the primary windings of the coil and should be consistent with the value given in the Specifications at the beginning of this Chapter.

7 To check the condition of the secondary windings, set the meter to the K-ohm scale. Connect one meter probe to the spark plug cap and the other probe to the negative (-ve) black/white wire terminal on the coil (see illustration).If the reading obtained is not within the range shown in the Specifications, unscrew the cap from the end of the HT lead and repeat the test. If the reading is now as specified, renew the spark plug cap. If the reading is still outside the specified range, it is likely that the coil is defective.

8 Should any of the above checks not produce the expected result, have your findings confirmed by a Honda dealer (see Step 1). If the coil is confirmed to be faulty, it must be renewed; the coil is a sealed unit and cannot be repaired.

Removal

9 Remove the fuel tank (see Chapter 4) and disconnect the battery negative (-ve) lead.

10The coils are mounted on a bracket behind the steering head (see illustration).

11Disconnect the primary circuit electrical connectors from the coil and disconnect the HT lead from the spark plug. Mark the locations of all wires before disconnecting them.

12Unscrew the two bolts securing the coil to the mounting and remove the coil assembly and the two spacers between the coil and the bracket (see illustration 3.10).Note the routing of the HT leads.

Installation

13Installation is the reverse of removal.
Don't forget to replace the spacers between
the coil and the mounting bracket. Make sure
the wiring connectors and HT leads are
securely connected.

4 Pulse generator coil

assembly - check, removal ^,
and installation JS

Check

1 Remove the seat (see Chapter 8) and disconnect the battery negative (-ve) lead. Remove the right-hand frame side panel (see Chapter 8).

2 Trace the pulse generator coil wiring back from the right-hand engine cover and disconnect it at the white 4-pin connector inside the rubber boot on the right-hand side of the frame (see illustration).Using a

5»4 Ignition system

Date: 2016-01-14; view: 541