134 VL1500K5 (’05-MODEL)
Step 2
1) Measure the battery voltage between input lead wires at the ECM with the ignition switch in the “ON”
position. (E-02, 19, 24: O/G and B/W, E-03, 28, 33: O/W and B/W)
Is the voltage OK?
Step 3
1) Measure the ignition coil primary peak voltage. (
!
Page 135)
NOTE:
This inspection method is applicable only with the multi circuit tester and the peak volt adaptor.
Is the peak voltage OK?
Step 4
1) Check the plug caps for poor contacts.
2) If OK, then inspect the spark plugs. (
!
VL1500 Service Manual 2-4)
Are the spark plugs OK?
Step 5
1) Inspect the ignition coils. (
!
Page 136)
Are the ignition coils OK?
Step 6
1) Measure the CKP sensor peak voltage and its resistance. (
!
Page 136 and 137)
NOTE:
The CKP peak voltage inspection is applicable only with the multi-circuit tester and peak volt adaptor.
Are the peak voltage and its resistance OK?
YES
Go to Step 3.
NO
• Faulty ignition switch
• Faulty turn signal/side-stand relay
• Faulty engine stop switch
• Broken wire harness or poor connection of related circuit couplers
YES
Go to Step 4.
NO
Go to Step 5.
YES
Go to Step 5.
NO
Faulty spark plug (-s)
YES
Go to Step 6.
NO
Faulty ignition coil (-s)
YES
• Faulty ECM
• Open or short circuit in wire harness
• Poor connection of ignition couplers
NO
• Faulty CKP sensor
• Metal particles or foreign material being stuck on the CKP sensor and rotor tip
SA
MP
LE
