Honda TRANSALP XL600-650V (1987-2002) [153/291] Ignition system 5 3
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Honda TRANSALP XL600-650V (1987-2002) [153/291] Ignition system 5 3

Honda TRANSALP XL600-650V (1987-2002) [153/291] Ignition system 5 3

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Ignition system 5 3 3 4 To test the HT coil primary resistance connect the multimeter leads between the primary circuit terminals 3 7 To test the HT coil secondary resistance connect the multimeter leads between the spark plug sockets Faulty ignition main switch or engine kill switch see Chapter 9 Faulty neutral clutch or sidestand switch see Chapter 9 Faulty pulse generator coil or damaged trigger on timing or alternator rotor according Io model Faulty ignition HT coil s Faulty throttle position sensor if fitted 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 the other cap see illustration 8 If on all models the reading obtained is not within the range shown in the Specifications unscrew the cap s from the end of the HT lead s and repeat the measure ment If the reading is now as specified then the cap s could be faulty To test the cap s measure the resistance which should be around 5 K ohms see illustration 9 If the caps are good separate the lead from the coil by unscrewing its retainer and check the lead for continuity zero resistance If there is no continuity i e a very high resistance the lead is faulty With the lead s detached recheck the coil If the coil reading is still outside the specified range it is likely that the coil is defective 10 It is advisable to confirm your findings with a Honda dealer before buying a new coil Note that on later models the following peak voltage test can be made to confirm the coil s condition 3 Ignition HT coils check removal and installation Check 1 Remove the fuel tank see Chapter 4 Check the coils visually for loose or damaged terminals cracks and other damage 2 Remove the seat see Chapter 8 Disconnect the battery negative lead 3 Remove the coil being tested see Steps 16 to 18 Peak voltage test XL600V T to X 1997 to 1999 models XL650V models and XRV750 T models onwards 1996 on 11 Honda specify their own Imrie diagnostic tester model 625 or the peak voltage Primary windings check all models adapter Pt No 07HGJ 0020100 with an 4 Set an ohmmeter or multimeter to the ohms aftermarket digital multimeter having an x 1 scale and measure the resistance between impedance of 10 M ohm DCV minimum for the primary circuit terminals on the coil see the peak voltage test If this equipment is illustration This will give a resistance available install and reconnect the coils as reading of the primary windings of the coll and described in Steps 19 to 21 should be consistent with the value given in the Specifications at the beginning of the Chapter Secondary windings check all models 5 To check the condition of the secondary windings set the meter to the K ohm scale 6 On XL600V H to R 1987 to 1995 models and XRV750 L to S 1990 to 1995 models connect one meter probe to the spark plug cap and the other probe to the green primary circuit terminal on the coil 7 On XL600V T to X 1997 to 1999 models XL650V models and XRV750 T models onward 1996 on connect one meter probe to one spark plug cap and the other probe to 3 17 Disconnect the primary wiring connectors arrowed 3 8 Measuring spark plug cap resistance 12 Connect the positive lead of the voltmeter and peak voltage adapter arrangement to the blue yellow front cylinder coil or yellow blue rear cylinder coil wire terminal on the coil with the wiring connector still securely connected and connect the negative lead to a suitable earth ground point 13 Check that the kill switch Is in Ihe RUN position and the transmission is in neutral then turn the ignition switch ON Note the initial voltage reading on the meter then turn the engine over on the starter motor and note the ignition coil peak voltage reading on the meter Once both readings have been noted turn the ignition switch oft and disconnect the meter 14 If the initial voltage reading is not as expected or the peak voltage readings are lower than the specified minimum see Specifications then a fault is present somewhere else in the ignition system circuit see Section 2 note that the peak voltage readings for each coil can be different but each one must exceed the specified minimum 15 If the initial and peak voltage readings are as specified and the plug does not spark then the ignition HT coil HT lead or plug cap are faulty the plug caps and leads are available separately In order to determine conclusively that an ignition coil is defective it should be tested by a Honda dealer If the coil is confirmed to be faulty it must be renewed the coil is a sealed unit and cannot therefore be repaired Removal 16 Remove the fuel tank see Chapter 4 Mark the locations of all wires and leads before disconnecting them The colls can now be removed Note the spacers fitted on the coil mounting 17 Disconnect the primary circuit wiring connectors from the coils see illustration Pull the caps off the spark plugs see illustration 2 2 18 Unscrew the bolts nuts securing the coil or its mounting bracket according to model noting the spacers and remove the coil noting how it fits see illustrations

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