Dtc Troubleshooting - TOHATSU BFT75A Service Manual

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DTC TROUBLESHOOTING

DTC INDEX
DTC MIL
MIL does not
come ON/
blink
0 or does not
communicate
0 or does not MIL stay ON
communicate
0-2 ON
0-5
0-8
1-4 ON
3-1 ON
3-2 ON
4-1 ON
4-2 ON
6-1 ON
6-2 ON
7-1 ON
Detected component
ECM
ECM
ECM (internal failure)
HO2S (failure)
MAP sensor (voltage too low)
MAP sensor (voltage too high)
CKP sensor (no pulse)
CKP sensor (abnormal pulse)
EBT sensor
(voltage too low)
EBT sensor
(voltage too high)
TP sensor (voltage too low)
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
• SCS service check connector
activated
• Short circuit in DLC wire
• Short circuit in MIL wire
• Short circuit in sensor power circuit
• Faulty ECM
• 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
• Short circuit in MAP sensor wire (PB)
• Open circuit in MAP sensor wire
(VCC1)
• Faulty MAP sensor
• Loose or poor contact of the
connector
• Open circuit in MAP sensor wire (PB)
• Open circuit in MAP sensor wire
(VCC1)
• Open circuit in MAP sensor wire
(SG1)
• Faulty MAP sensor
• Loose or poor contact of the
connector
• Open or short circuit in CKP sensor
wire (CRK)
• Open circuit in CKP sensor wire
(IGP2)
• Open circuit in CKP sensor wire (LG1)
• Faulty CKP sensor
• Loose or poor contact of the
connector
• Faulty CKP sensor
• Faulty crank purser plate
• Loose or poor contact of the
connector
• Short circuit in EBT sensor wire (TE)
• Faulty EBT sensor
• Loose or poor contact of the
connector
• Open circuit in EBT sensor wire (TE)
• Open circuit in EBT sensor wire (SG2)
• Faulty EBT sensor
• Loose or poor contact of the
connector
• Open or short circuit in TP sensor wire
(THL)
• Open circuit in TP sensor wire (VCC2)
• Faulty TP sensor
FUEL SYSTEM
Ref. page
4-17
5-16
5-19
5-19
5-20
5-21
5-23
5-24
5-25
5-26
5-27
5-13