TOHATSU MD 70-90C2 Service Manual page 284

O
Troubleshooting
K
Symptom
-2.
Fuel System
.
- .
Engine can be
Air System
cranked and
starts, but idling
revolution
cannot be
maintained or is
unstable.
-4.
Electrical
System
4.
4-1.
Idling speed is
Electrical
too high.
System
5-1.
5.
Engine
5-2.
revolution is
unstable at
5- .
000rpm or
higher.
5-4.
6.
Engine will not
6-1.
fully increase
Power Head
speed with wide
open throttle.
9-8
Item
Fuel pressure is low.
Normal value range:
0.67 - 0.78MPa
(97.17 - 11 .1 psi)
[6.7 - 7.8kg/cm )
2
Fuel pressure is high.
Normal value range:
0.67 - 0.78MPa
(97.17 - 11 .1 psi)
[6.7 - 7.8kg/cm )
2
Air pressure is low.
[Normal value range:
0.61 - 0.70MPa
(88.47 - 101.5 psi)]
[6.1 - 7.0kg/cm ]
2
Air pressure is high.
Spark Plug
Spark Plug Cap
Self-diag. reports component
abnormality.
Self-diag. reports component
abnormality.
Air Injector
Key switch
Self-diag. reports TPS idle
position incorrect.
Spark Plug
Engine speed is controlled.
(due to ESG)
Fuel or air pressure is low.
TPS(*1) function is faulty.
Advancer arm will not move.
Compression insufficient
Warning
indicator A
Self-
(Oil level)
diagnosable
eep
( )
○
Flashing
○
Flashing
○
Flashing
○
Flashing
○
Flashing
○
Warning Warning
lamp lamp C
(Water temp.) ( attery volt.)
Flashing Flashing
Flashing Flashing
Flashing Flashing
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Flashing Flashing
TLDI 75/90C2 2010