Suzuki DF150 Service Manual page 136

CHART 16: SELF-DIAGNOSTIC CODE "4-1" Model discrimination
START
<Ignition switch "ON">
Check CMP sensor #1, #2 signal.
Is result OK? (See page 3-57.)
YES
Possible cause:
• No. 13 terminal wiring harness/connector
open circuit. (DF150)
• No. 13 terminal connector short circuit
(DF175)
CHART 17: SELF-DIAGNOSTIC CODE "6-2" OCV
START
<Ignition switch "OFF">
Check OCV operation.
Is result OK? (See page 3-62.)
YES
<Ignition switch "OFF">
Check OCV resistance.
Is result OK? (See page 3-62.)
YES
Possible cause:
• ECM failure
• Wire continuity/connection failure
CHART 18: SELF-DIAGNOSTIC CODE "1-1" Over charging
START
<Individual check>
Check rectifier & regulator resistance.
[NOTE 1]
Is result OK? (See page 4-8.)
YES
<Engine running>
Check "20" terminal voltage at idle speed.
Is result 16 V or over? (See page 3-48.)
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.
NOTE 1:
It is difficult to check rectifier & regulator completely. Before replacing with new one, check if its ground point
has good electrical contact.
NO
• CMP sensor failure
• Wire continuity/connection failure
NO
OCV failure
NO
OCV failure
NO
Rectifier & regulator failure
ENGINE CONTROL SYSTEM
YES
3-77