100
9.2.7
Spark Plug Power Supply Failure
If no power is supplier to the spark plug and the
LED signals that ignition is possible, follow these
steps:
-
Run a pick-up check:
detach the control unit
connector
and
check
continuity
between
terminals no. 2 (green) and no. 8 (black). This
check involves the pick up and its supply:
Standard resistance:
Pick-Up
105-124 O
Ve = Green, Ne = Black
If the circuit is interrupted, repeat the check between the flywheel connector and the engine
ground (see engine manual). If the measured values are not as specified, replace the pick-
up, otherwise repair the wiring.
If, on the other hand, the values are as specified, try replacing the control unit (without
programming it) and ensure that the problem has been solved by checking that a spark is
produced at the plug, then proceed to program the control unit.
H.T. coil primary circuit check
Detach the control unit connector and check
continuity between terminals no. 3 and no. 8 (see
figure).
Standard resistance:
H.T. coil secondary circuit
0.4-0.5O
If the resistance is not as specified, repeat the check
directly on the positive and negative terminals of the
H.T. coil primary circuit.
If the measured resistance is as specified, proceed by
repairing the wiring or restoring the connections,
otherwise replace the H.T. coil.
Vi = Purple
Ne = Black
H.T.
coil secondary circuit check
Disconnect the spark plug cap from the H.T. cable
and measure the resistance between the end of the
H.T. cable and the negative terminal of the H.T. coil
(see figure).
Standard resistance:
H.T. coil secondary circuit
~3,000±300 O
If the measured values are not as specified, replace
the H.T. coil. To obtain a more accurate diagnosis
proceed to verify the peak voltage using the
multimeter adaptor.
Specific equipment and tools:
Multimeter adaptor
020409Y
1 = Black cap
2 = Green cap
Summary of Contents for GT 200
Page 1: ......
Page 90: ...90 9 1 2 Turn Signal Lights Horn Services and Accessory Pre Wiring ...
Page 151: ...151 10 10 Lubrication Circuit ...
