TOHATSU 200 Series Service Manual page 70

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FUEL SYSTEM
3. CKP sensor inspection
Replace the CKP sensor and connect the CKP
sensor 2P connector
Start the engine and check the DTC using the HDS.
Does the DTC 4-2 appear?
YES
NO
DTC 6-1, 6-2 (ECT SENSOR 1 (EBT
SENSOR) VOLTAGE IS TOO LOW OR
TOO HIGH)
DTC 6-1 (ECT SENSOR 1 (EBT SENSOR) VOLTAGE
IS TOO LOW)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EBT sensor 2P connector
ECM connector A
switch wire 6P connector
Clear the DTC (page 5-2).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the EBT sensor voltage using the HDS.
Is the measurement within 0.08 – 4.92 V?
YES
NO
2. EBT sensor signal line short circuit inspection
Turn the combination switch OFF and disconnect
the EBT sensor 2P connector
Turn the combination switch ON.
Measure the voltage between the EBT sensor 2P
connector
White) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
5-14
.
– Replace the ECM with a new one and
recheck.
– Faulty original CKP sensor.
, ECM connector B
, joint connector 1
and then reconnect them.
– Temporary failure (code
reappear).
– GO TO STEP 2.
main wire harness side No.1 (Red/
– Replace the EBT sensor with a new one
and recheck.
– Repair short in the main wire harness
between the ECM and EBT sensor. If the
main wire is correct, replace the ECM with
a new one and recheck.
,
,
does not
.
EBT SENSOR 2P CONNECTOR
MAIN WIRE HARNESS SIDE
TE
(Red/White)