TOHATSU BFT250A Service Manual page 138

dummyhead dummyhead
FUEL SYSTEM
DTC MIL
ON
8-1
ON
8-2
ON
10-1
ON
10-2
ON
14-1
ON
21-1
ON
23-1
ON
41-2
ON
58-1
ON
58-2
ON
140-1
ON
140-2
5-16
Detected component
CMP 1 sensor (no pulse)
CMP 1 sensor (abnormal pulse)
IAT sensor (voltage too low)
IAT sensor (voltage too high)
IAC valve (abnormal current)
VTEC spool solenoid valve
Knock sensor
HO2S heater (abnormal current)
CMP 2 sensor (no pulse)
CMP 2 sensor (abnormal pulse)
ECT sensor 2 (EMT sensor 1)
(voltage too low)
ECT sensor 2 (EMT sensor 1)
(voltage too high)
Probable cause
• 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
• Faulty CMP 1 sensor
• Loose or poor contact of the
connector
• Short circuit in IAT sensor wire
• Faulty IAT sensor
• Loose or poor contact of the
connector
• Open circuit in IAT sensor wire
• Faulty IAT sensor
• Loose or poor contact of the
connector
• Open or short circuit in IAC
valve wire
• Faulty IAC valve
• Loose or poor contact of the
connector
• Open or short circuit in VTEC
spool solenoid valve wire
• Faulty VTEC spool solenoid
valve
• Loose or poor contact of the
connector
• Open or short circuit in knock
sensor wire
• Faulty knock sensor
• Loose or poor contact of the
connector
• Open or short circuit in HO2S
heater wire
• Faulty HO2S
• Loose or poor contact of the
connector
• Open or short circuit in CMP 2
sensor wire
• Faulty CMP 2 sensor
• Loose or poor contact of the
connector
• Faulty CMP 2 sensor
• Loose or poor contact of the
connector
• Short circuit in EMT sensor 1
wire
• Faulty EMT sensor 1
• Loose or poor contact of the
connector
• Open circuit in EMT sensor 1
wire
• Faulty EMT sensor 1
Ref.
page
5-30
5-31
5-32
5-33
5-34
5-35
5-36
5-37
5-38
5-39
5-40
5-41