TOHATSU BFT 250A, Service Manual

Page: 152 / 639

5-30
dummyhead dummyhead
FUEL SYSTEM
DTC 8-1, 8-2 (NO CMP 1 SENSOR PULSE OR ABNORMAL SENSOR PULSE)
DTC 8-1 (NO CMP 1 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 8-1 appear?
YES – GO TO STEP 2.
NO – Temporary failure (code does not
reappear).
2. CMP sensor inspection
Turn the combination switch OFF.
Inspect the CMP 1 sensor (page 5-123).
Is the CMP 1 sensor correct?
YES – Repair the open or short circuit in the CMP
1 sensor harness between the CMP 1
sensor and ECM. If the main wire harness
is correct, replace the ECM with a new one
and recheck.
NO – Replace the CMP 1 sensor with a new one
and recheck.
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
TDC1P
ECM CMP 1
SENSOR
R
1
25
TDC1M
24
G
R
G
R
G
2