TOHATSU BFT 250A, Service Manual

Page: 160 / 639

5-38
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FUEL SYSTEM
2. HO2S heater inspection
Turn the combination switch OFF.
Inspect the HO2S heater (page 5-126).
Is the HO2S heater correct?
YES – Repair open in the main wire harness
between the No.10 fuse and the HO2S or
between the HO2S and ECM. If the main
wire harness is correct, replace the ECM
with a new one and recheck.
NO – Replace the HO2S with a new one and
recheck.
DTC 58-1, 58-2 (NO CMP 2 SENSOR PULSE OR ABNORMAL SENSOR PULSE)
DTC 58-1 (NO CMP SENSOR PULSE)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the CMP sensor 4P connector
,
ECM connector A and then reconnect them.
Clear the DTC (page 5-6).
• Continue the procedure if the DTC does not
clear.
Start the engine and check the DTC using the HDS.
Does the DTC 58-1 appear?
YES – GO TO STEP 2.
NO – Temporary failure (code does not
reappear).
Bl: Black
Y: Yellow
Bu: Blue
G: Green
R: Red
W: White Br: Brown
O: Orange
Lb: Light blue
Lg: Light green
P: Pink
Gr: Gray
ECM
CMP 2
SENSOR
Bl
5
TDC2P Y
4
TDC2M
4
Y Y
Bl
3
Bl