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4 CHECK GROUND CIRCUIT
1. Check harness continuity between heated oxygen sensor 2 (rear) terminal 4 and engine ground. Refer to “Wiring
Diagram”, EC-269.
Continuity should exist.
2. Also check harness for short to power.
OK or NG
OK 䊳 GO TO 5.
NG 䊳 GO TO 4.
5 CHECK HARNESS CONNECTOR
Check heated oxygen sensor 2 (rear) harness connector for water.
Water should not exist.
OK or NG
OK (With CONSULT-II) 䊳 GO TO 6.
OK (Without CONSULT-
II)
䊳 GO TO 7.
NG 䊳 Repair or replace harness connector.
DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)
(HIGH VOLTAGE)
KA24DE
Diagnostic Procedure (Cont’d)
EC-271
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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