Mil Troubleshooting - TOHATSU 200 Series Service Manual

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FUEL SYSTEM

MIL TROUBLESHOOTING

MIL INDEX
MIL
No. of
Condition
blinks
Detected
component
MIL does
not blink
ON
Stays ON
Blink
1
(Except
XT, XCT,
XXT, XXCT
types)
Blink
3
Blink
4
Blink
6
Blink
7
Blink
8
Blink
10
Blink
14
5-30
Detected component
ECM
ECM
HO2S
MAP sensor (sensor voltage)
CKP sensor (pulse)
EBT sensor (sensor voltage)
TP sensor (sensor voltage)
CMP 1 sensor (pulse)
IAT sensor (sensor voltage)
IAC valve (abnormal current)
Probable cause
• Loose or poor contact of the
connector
• Faulty indicator light
• Open circuit in MIL wire
• Open circuit in ECM power/
ground cable
• Faulty ECM
Normal with the SCS service
connector installed - If engine
condition continues without the MIL
blinking, check the following:
• Short circuit in DLC wire
• Short circuit in MIL wire
• Short circuit in sensor power
circuit
• Faulty ECM
• Loose or poor contact of the
connector
• Open or short circuit in HO2S
wire
• Faulty fuel supply system
• Faulty HO2S
• Loose or poor contact of the
connector
• Open or short circuit in MAP
sensor wire
• Faulty MAP sensor
• Loose or poor contact of the
connector
• Open or short circuit in CKP
sensor wire
• Faulty CKP sensor
• Faulty guide plate
• Loose or poor contact of the
connector
• Open or short circuit in EBT
sensor wire
• Faulty EBT sensor
• Loose or poor contact of the
connector
• Open and short circuit in TP
sensor wire
• Faulty TP sensor
• Loose or poor contact of the
connector
• Open or short circuit in CMP 1
sensor wire
• Faulty CMP 1 sensor
• Loose or poor contact of the
connector
• Open and short circuit in IAT
sensor wire
• Faulty IAT sensor
• Loose or poor contact of the
connector
• Open and short circuit in IAC
valve wire
• Faulty IAC valve
Ref.
page
4-4
5-32
5-34
5-35
5-36
5-37
5-38
5-39
5-40
5-41