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Diagnostic Procedure
NGEC0689
1 CHECK HO2S2 (REAR) POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Check heated oxygen sensor 2 (rear) harness protector color.
SEF372Z
3. Disconnect corresponding heated oxygen sensor 2 (rear) harness connector.
WEC546
4. Turn ignition switch ON.
5. Check voltage between HO2S2 terminal 3 and ground.
SEF637W
Voltage: Battery voltage
OK or NG
OK 䊳 GO TO 3.
NG 䊳 GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
쐌 Harness connectors M59, F27
쐌 Fuse block (J/B) connector M26
쐌 10A fuse
쐌 Harness for open or short between heated oxygen sensor 2 (rear) and fuse
䊳 Repair harness or connectors.
DTC P0141, P0161 HEATED OXYGEN SENSOR 2 HEATER
(REAR) (BANK 1)/(BANK 2)
VG33E
Diagnostic Procedure
EC-880
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