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EC-218
[QR (WITH EURO-OBD)]
DTC P0139 HO2S2
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure BBS001D1
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-135, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
16 OR/B Heated oxygen sensor 2
[Engine is running]
● Revving engine form idle to 3,000 rpm quickly
after the following conditions are met
– Engine: After warming up
– Keeping the engine speed between 3,500 and
4,000 rpm for 1 minute and at idle for 1 minute
under no load
0 - Approximately 1.0V
74 B
Sensor ground
(Heated oxygen sensor)
[Engine is running]
● Warm-up condition
● Idle speed
Approximately 0V
PBIB2021E
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