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DTC P1144 HO2S1
EC-333
[QR (WITH EURO-OBD)]
C
D
E
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G
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M
A
EC
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 below 0.8V at least 1 time.
● The minimum voltage is below 0.35V at least 1 time.
4. If NG, go to EC-333, "
Diagnostic Procedure" .
Diagnostic Procedure BBS001GI
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-135, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
MBIB0018E
PBIB2021E
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