Suzuki DF 90 Service Manual page 96

3-48 ENGINE CONTROL SYSTEM
CHART9 : SELF-DIAGNOSTIC CODE "1-1"
START
< Individual check >
Check rectifier & regulator resistance.
[NOTE1]
Is result OK? (See page 4-4)
YES
< Engine running >
Check "30" terminal voltage at idle
speed. (See page 3-37)
Is result 16 V or over?
NO
Possible cause :
• ECM failure
• Wire continuity / connection failure
NOTE:
This self-diagnostic code indication may be canceled by turning ignition switch ON because ECM detects
battery voltage.
NOTE1:
It is difficult to check rectifier & regulator completely. Before replacing with new one, check if its ground point
has good electrical contact.
CHART10 : SELF-DIAGNOSTIC CODE "1-5"
START
< Ignition switch "OFF" >
Check exhaust manifold temp. sensor
resistance.
Is result OK? (See page 3-38)
YES
Possible cause :
• ECM failure
• Wire continuity / connection failure
CHART11 : SELF-DIAGNOSTIC CODE "4-3"
START
< Ignition switch "OFF" >
Check fuel injector operating sound
(individual).
Is result OK? (See page 3-39)
YES
Possible cause :
• ECM failure
• Wire continuity / connection failure
NO
Rectifier & regulator failure
YES
NO
Exhaust manifold temp. sensor failure
NO
Fuel injector failure