TROUBLESHOOTING AND ELECTRICAL SYSTEM
Test Procedures
Page 11-22
2005 FE290 Gasoline Vehicle Maintenance and Service Supplement
11
A
Test Procedure 15A – Ignition coil – In Vehicle Test, Continued:
3. Using a multimeter set to 20k (ohms), measure the resistance of the secondary coil and spark plug cap
together.
3.1. Place the red (+) probe of the meter into the end of the spark plug cap that normally connects to
the spark plug and place the black (–) probe on a clean unpainted surface of the engine or frame
(Figure 11-19, Page 11-22)
.
3.2. If the resistance is between 6.0 - 11.0 k (ohms), the secondary coil and spark plug cap are within
acceptable limits; proceed to step 6 on page 11-24. If the resistance is not between 6.0 - 11.0 k
(ohms), the spark plug cap and secondary coil must be tested independently from each other.
Figure 11-18 Primary Coil Resistance – In Vehicle Test
Figure 11-19 Secondary Coil Test – In Vehicle Test
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED