Suzuki DF90A Service Manual

Engine General Information and Diagnosis: 1A-23
Self-Diagnostic Code “1 – 4” Cylinder Temp. Sensor
Z9J0111104004
Wiring Diagram
Troubleshooting
For step 1
ECM
5V
C
P
U
Lg/WB
B
B/W
1
I9J011110021-03
1. Cylinder temp. sensor
Step Action Yes No
1 1) With the ignition switch “OFF”, disconnect the Cylinder
Temp. Sensor connector.
2) With the ignition switch “ON”, check the voltage at the
“Lg/W” wire terminal of the Cylinder Temp. Sensor
connector.
Is the voltage 4 V or more?
Go to step 2. • “Lg/W” wire shorted
to the “B/W” wire or
ground circuit.
• If the wiring is OK,
substitute a known-
good ECM and
recheck.
2 1) Check the Cylinder Temp. Sensor.
Refer to “Cylinder Temp. Sensor Inspection” in Section
1C (Page 1C-8).
Is it in good condition?
Poor Cylinder Temp.
Sensor connection,
intermittent trouble or a
faulty ECM may be the
cause.
Faulty Cylinder Temp.
Sensor.
I9J011110045-02
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Suzuki DF90A Specifications

General

Gear Ratio	2.59:1
Starting System	Electric
Cooling System	Water-cooled
Steering	Remote Control
Shaft Length	L: 508mm (20in), X: 635mm (25in)
No. of Cylinders	4
Oil Pan Capacity	4.5 L
Alternator	12V 40A
Engine Mounting	Shear Mount
Trim Method	Power Trim and Tilt
Exhaust	Through Prop Hub Exhaust
Engine Type	4-stroke
Maximum Output	90 hp
Fuel System	Sequential Multi Point Electronic Fuel Injection
Full Throttle Operating Range	5300 - 6300 rpm
Ignition System	Fully-transistorized
Displacement	1498 cm³