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EC-320
[QR (WITH EURO-OBD)]
DTC P1143 HO2S1
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and ground.
3. Check one of the following with engine speed held at 2,000 rpm
constant under no load.
● The maximum voltage is over 0.6V at least 1 time.
● The minimum voltage is over 0.1V at least 1 time.
4. If NG, go to EC-320, "
Diagnostic Procedure" .
Diagnostic Procedure EBS010S8
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body.
Refer to EC-131, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
MBIB0018E
PBIB2021E
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