Diagnostics; Magnetic Position Sensor (P) (T.d.c. Sensor) - Winnebago 1987-1989 LeSharo Service Manual

IGNITION SYSTEM
DIAGNOSTICS
MAGNETIC POSITION SENSOR (P)
(T.D.C. Sensor)
The sensor can be tested using an ohm meter
connected between the wire connector pins.
p
1
100-200 ohms (150 ohms.±. 50)
170-270 ohms (220 ohms.±. 50)
@
680
F. (20° C)
Renix:
Siemens:
For correct operation the sensor must be at a
distance (A) of between 0.5 and 1 mm (0.020 and
0.039 in) from the flywheel.
The engine may be equipped with either a Siemens
or a Renix sensor. These sensors have different
resistance values as shown below.
IMPORTANT
Absolutely no interference between the flywheel
and the magnetic position (TDC) sensor can be
tolerated. A warped, bent, or damaged flywheel can
cause an interruption in the signal sent to the
ignition module, resulting in either complete or
intermittent ignition loss. An ignition analyzer
oscilliscope is extremely useful in diagnosing ignition
poblems. Do not rule out the possibility of bad spark
plugs, plug wires, distributor cap and rotor in the
case of an ignition interruption. Eliminate these
possibilities before condemning the ignition module.
WARNING
Do not short out the high tension lead (coil wire)
on the ignition module body. This can cause
permanent damage to internal cicuitry of the
module.
SPECIFICATIONS:
,
L
l
l
[
l
Firing Order: 1-3-4-2
Spark plug gap :.022 in - .026 in
Plug type - Champion RS9YCor AC CR42LTS
R10-':l