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DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
DI--125
DTC P0135/21,28 Heated Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 1)(2RZ--FE)
DTC P0141/27,29 Heated Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)(2RZ--FE)
CIRCUIT DESCRIPTION
Refer to DTC P0130/21,28 (Oxygen Sensor circuit Malfunction (Bank1))
DTC No.
DTC Detecting Condition
Trouble Area
P0135/21 28
O
h t i h t
i
it f
f 0 5
S
Open or short in heater circuit of heated oxygen sensor
P0135/21,28
P0141/27 29
Open or short in heater circuit of oxygen sensor for 0.5. or
more
S
Open or short in heater circuit of heated oxygen sensor
S
Heated oxygen sensor heater
P0141/27,29
more
Heated oxygen sensor heater
S
Engine ECU
HINT:
S
Sensor 1 refers to the sensor closer to the engine body.
S
Sensor 2 refers to the sensor farther away from the engine body.
WIRING DIAGRAM
Refer to DTC P0130/21,28 (Oxygen Sensor Circuit Malfunction)
INSPECTION PROCEDURE
HINT:
Read freed frame data using hand--held tester. Because freeze frame records the engine conditions when
the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was run-
ning or stopped, the engine warmed up or not, the air--fuel ratio lean or rich, etc. at the time of the malfunction.
DI1IG--01
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3RZ-F,3RZ-FE