TROUBLESHOOTING AND ELECTRICAL SYSTEM
Test Procedures
2005 FE290 Gasoline Vehicle Maintenance and Service Supplement
Page 11-21
11
A
3. Using a multimeter set on 200 (ohms), place the red (+) probe on the brown ground wire and place the
black (–) probe on one of the black wire female bullet connectors. The reading should be no continuity.
If the reading is not correct, replace the RPM Limiter.
4. This test will find most bad RPM Limiters. Some of them may bench test okay but fail under a load due
to heat while operating. Another method of testing is to replace the RPM Limiter and then run the engine.
If the engine runs properly, keep the new RPM Limiter in the circuit.
TEST PROCEDURE 15 – IGNITION COIL
See General Warning, Section 10, Page 10-1.
The following test procedures will properly detect a coil that has failed in most cases; however, in rare cases,
some ignition coils can fail to operate at normal (warmer) operating temperatures. If the ignition coil has tested
okay in the vehicle and on the bench, but fails to operate reliably, replace the coil with a known good coil and
operate the engine for several minutes to ensure that the coil functions at normal operating temperature. If the
new coil functions properly, keep the new coil in the circuit.
Test Procedure 15A – Ignition coil – In Vehicle Test
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning, Section 10, Page 10-1.
2. Using a multimeter set to 200 (ohms), measure the primary coil resistance.
2.1. Disconnect both of the bullet terminals at the RPM limiter
(Figure 11-17, Page 11-21)
. Place the
red (+) probe of the meter on the male bullet terminal of the wire connecting to the ignition coil under
the fan housing, and place the black (–) probe on a clean unpainted surface of the engine or frame
(Figure 11-17, Page 11-21)
.
2.2. If the resistance is not between 0.6 - 1.7 (ohms), bench test the ignition coil.
See Test Procedure
15B – Ignition Coil – Bench Test on page 11-24.
Figure 11-17 RPM Limiter
FEMALE BULLET
TERMINAL
BLACK WIRE
BROWN WIRE
RPM LIMITER
BLACK WIRE
TO IGNITION COIL
WHITE/BLACK
KILL CIRCUIT
WIRE
FEMALE
BULLET
CONNECTOR
