Toyota 2GR-FE Manual page 346

ES–190
Result
HO2 Sensor Output Voltage
A
ES
3
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT)
Wire Harness Side Front View:
C55
HT2B
HT1B
OX1B
OX2B
OK
REPLACE ECM (See page ES-518)
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(c) Enter the following menus: DIAGNOSIS / ENHANCED
(d) Allow the engine to idle.
(e) Read the Heated Oxygen (HO2) sensor output voltage
More than 1.2 V
Less than 1.0 V
(a) Turn the engine switch off and wait for 5 minutes.
(b) Disconnect the C55 ECM connector.
(c) Measure the resistance according to the value(s) in the
ECM Connector
(d) Reconnect the ECM connector.
A107892E78
OBD II / DATA LIST / PRIMARY / O2S B1S2 or O2S
B2S2.
while idling.
B
Go to step 5
table below.
Standard resistance
Tester Connection
HT1B (C55-48) - OX1B (C55-88)
HT2B (C55-47) - OX2B (C55-87)
NG
Go to step 4
Proceed to
A
B
Specified Condition
10 kΩ or higher
10 kΩ or higher