TOHATSU BFT75A - DTC Troubleshooting

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