TOHATSU BFT250A Service Manual page 147

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2. CKP sensor inspection
Turn the combination switch OFF.
Inspect the CKP sensor (page 5-123).
Is the CKP sensor correct?
YES
NO
DTC 4-2 (ABNORMAL CKP SENSOR PULSE)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the CKP sensor 2P connector
ECM connector A
Clear the DTC (page 5-6).
• Continue the procedure if the DTC does not
Start the engine and check the DTC using the HDS.
Does the DTC 4-2 appear?
YES
NO
2. CKP sensor installation inspection
Turn the combination switch OFF.
Inspect the CKP sensor installation (page 5-102).
Is the CKP sensor installed correctly?
YES
NO
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
– Repair the open or short circuit in the CKP
sensor harness between the CKP sensor
and ECM. If the main wire harness is
correct, replace the ECM with a new one
and recheck.
– Replace the CKP sensor with a new one
and recheck.
and then reconnect them.
clear.
– GO TO STEP 2.
– Temporary failure
reappear).
– GO TO STEP 3.
– Install the CKP sensor correctly and
recheck.
.
– Replace the ECM with a new one and
recheck.
– Faulty original CKP sensor.
,
(code does not
FUEL SYSTEM
5-25