TOHATSU BFT115A Service Manual page 172

FUEL SYSTEM
MIL
No. of Condition
blinks
23 Blink
24 Blink
25 Blink
27 Blink
41 Blink
48 Blink
5-54
Detected component
Knock sensor
(abnormal detection)
ECT sensor 2
(voltage too low or too high)
ECT sensor 3
(voltage too low or too high)
ECT sensor 4
(voltage too low or too high)
A/F sensor heater
(abnormal current)
A/F sensor
(abnormal current)
Probable cause
• Loose or poor contact of the connec-
tor
• Open and short circuit in knock sen-
sor wire
• Faulty knock sensor
• Loose or poor contact of the connec-
tor
• Open and short circuit in ECT sensor
2 wire
• Faulty ECT sensor 2
• Loose or poor contact of the connec-
tor
• Open and short circuit in ECT sensor
3 wire
• Faulty ECT sensor 3
• Loose or poor contact of the connec-
tor
• Open and short circuit in ECT sensor
4 wire
• Faulty ECT sensor 4
• Loose or poor contact of the connec-
tor
• Open and short circuit in A/F sensor
heater wire
• Faulty A/F sensor heater
• Faulty A/F sensor heater relay
• Loose or poor contact of the connec-
tor
• Open and short circuit in A/F sensor
wire
• Faulty A/F sensor
Ref.
page
5-70
5-71
5-72
5-73
5-74
5-77