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DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
DI--127
DTC P 0136/ 27, 29 Heated Oxygen S ensor Ci rcui t M al -
functi on (Bank 1 S ensor 2) (2RZ -- F E ).
CIRCUIT DESCRIPTION
Refer to DTC P0130/21,28 (Oxygen Sensor Circuit Malfunction (Bank1)
DTC No.
DDTC Detecting Condition
Trouble Area
P0136/27,29
Oxygen sensor (sensor 1) signal is 0.45 V or more and oxygen
sensor (Bank 2) signal is 0.45 V or less under conditions
(a) and (b):
(2 trip detection logic)
(a) Water temp.: 80
˚
C (176
˚
F) or more
(b) Accelerator pedal: Full depressed for 2 sec. or more
S
Open or short in heated oxygen sensor
S
Heated oxygen sensor
S
Engine ECU
HINT:
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.
W hen using hand -- held tester
1 Are th ere an y o t h er co d es ( b esid es DT C P0136/27,29) b ein g o u t p u t ?
YES
Go to relevant DTC chart.
NO
2 Check for open and short in harness and connector between engine ECU and
h eated o xyg en sen so r
NG
Repair or replace harness or connector.
OK
DI1IH--01
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