Suzuki DF150 Service Manual page 135

3-76 ENGINE CONTROL SYSTEM
CHART 13: SELF-DIAGNOSTIC CODE "2-6" CMP sensor (VVT)
START
<Ignition switch "ON">
Check CMP sensor (VVT) signal.
Is result OK? (See page 3-57.)
YES
Possible cause:
• ECM failure
• Wire continuity/connection failure
CHART 14: SELF-DIAGNOSTIC CODE "5-2" VVT advance
START
<Ignition switch "ON">
Check "20" "23" terminal voltage
(ECM power source voltage).
Is result OK? (See page 3-48.)
YES
<Ignition switch "OFF">
Check OCV operation and OCV gasket
filter condition.
Is result OK? (See page 3-62.)
YES
Possible cause:
• ECM failure
• Wire continuity/connection failure
• OCV oil passage failure
• VVT actuator failure
CHART 15: SELF-DIAGNOSTIC CODE "3-3" Neutral switch
START
<Ignition switch "OFF">
Check neutral switch function.
Is result OK? (See page 4-15.)
YES
Possible cause:
• ECM failure
• Wire short circuit
• Shift position sensor lever damage
NO
• CMP sensor failure
• Wire continuity/connection failure
NO
ECM power source (battery, battery
switch, sub-battery cable, etc.) failure.
NO
OCV and/or OCV gasket failure
NO
Neutral switch failure