TOHATSU BFT 250A, Service Manual

Page: 137 / 639

5-15
dummyhead dummyhead
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 connector
activated
• Short circuit in DLC wire
• Short circuit in MIL wire
• Short circuit in sensor power
circuit
• Faulty ECM
5-18
0-2
ON Internal failure of ECM • Faulty ECM
5-20
1-4
ON HO2S • Loose or poor contact of the
connector
• Open or short circuit in HO2S
wire
• Faulty fuel supply system
• Faulty HO2S
5-21
3-1
ON MAP sensor (voltage too low) • Loose or poor contact of the
connector
• Short circuit in MAP sensor wire
• Faulty MAP sensor
5-22
3-2
ON MAP sensor (voltage too high) • Loose or poor contact of the
connector
• Open circuit in MAP sensor wire
• Faulty MAP sensor
5-23
4-1
ON CKP sensor (no pulse) • Loose or poor contact of the
connector
• Open or short circuit in CKP
sensor wire
• Faulty CKP sensor
5-24
4-2
ON CKP sensor (abnormal pulse) • Loose or poor contact of the
connector
• Faulty CKP sensor
• Faulty Guide plate
5-25
6-1
ON ECT sensor 1 (EBT sensor)
(voltage too low)
• Loose or poor contact of the
connector
• Short circuit in EBT sensor wire
• Faulty EBT sensor
5-26
6-2
ON ECT sensor 1 (EBT sensor)
(voltage too high)
• Loose or poor contact of the
connector
• Open circuit in EBT sensor wire
• Faulty EBT sensor
5-27
7-1
ON TP sensor (voltage too low) • Loose or poor contact of the
connector
• Open and short circuit in TP
sensor wire
• Faulty TP sensor
5-28
7-2
ON TP sensor (voltage too high) • Loose or poor contact of the
connector
• Open circuit in TP sensor wire
• Faulty TP sensor
5-29