BOMBARDIER SEA-DOO GTX RFI 5666 1998 Manual page 36

IGNITION SYSTEM
GENERAL
On this ignition system, the spark plugs spark in-
dependently.
The Electronic Control Unit (ECU) controls the ig-
nition timing and signals the ignition coil at the
right time for optimum engine performance.
INSPECTION
Ignition Coil
2
F07H0EA
IGNITION COIL
1. Primary side
2. Secondary side
3. Ground wire
Primary Winding
Disconnect the wire connector on the primary
side of the ignition coil.
Using a multimeter, check the resistance be-
tween the terminals 1 and 2. Repeat a resistance
test between terminals 2 and 3.
The resistance should be 0.41 ± 0.05 Ω at 20°C.
If not within specification, replace the ignition coil.
If the ignition coil test good, check the power sup-
ply on the primary side.
There should be 12 Vdc between the RED and
WHITE/BLUE wires or between the RED and
WHITE/GREEN wires while starting the engine.
If there is no voltage, either the MPEM or the wir-
ing harness is defective.
Secondary Winding
Due to the integrated diode, it is not possible to
take any resistance measurement.
IGNITION TIMING
Adjustment
To perform this adjustment, proceed as follows:
NOTE: For the static and dynamic tests, refer to
the 1998 Sea-Doo Shop Manual .
Access the BOSCH SYSTEM in the MPEM pro-
grammer. Then, select ADJUSTMENT in the sub-
menu.
Choose IGNITION in the ADJUSTMENT menu.
The screen will display the actual adjustment of
1
the ignition timing in degrees and it will also offer
to adjust it.
Unlike the other models, the number in the
MPEM programmer corrects the ignition timing in
0.75° increments.
3
Ignition timing is set at 11° BTDC at 3300 RPM.
Section 05 ELECTRICAL SYSTEM
Subsection 02 (IGNITION SYSTEM)
TIMING CORRECTION CHART
PROGRAMMER NUMBER
(MPEM)
4
3
2
1
0
-1
-2
-3
-4
0
IGNITION TIMING
CORRECTION
3°
2.25°
1.50°
0.75°
0
-0.75°
-1.50°
-2.25°
-3°
05-02-1