26 AN650A/K7 (’07-MODEL)
Step 2 (When indicating C44/P0135:)
1) Connect the HO2 sensor coupler.
2) Insert the needle pointed probe to the HO2 sensor coupler.
3) Turn the ignition switch ON and measure the heater voltage
between B (O/W) wire and ground.
4) If the tester voltage indicates the battery voltage, it is good
condition.
$ Heater voltage: Battery voltage
(
+ B –
- Ground)
NOTE:
Battery voltage can be detected only before starting the engine.
! 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
' Tester knob indication: Voltage (( )
Is the voltage OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(Refer to the SDS operation manual for further details.)
YES
• O/W or B wire open or shorted to ground, or
poor
\ connection.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• Replace the ECM with a known good one, and
inspect it again.
NO
• Open or short circuit in the Y/W wire or O/W
wire.
• Loose or poor contacts on the ECM coupler
(Terminal
\) or HO2 sensor coupler.
2
ECM coupler (Harness side)
SAMPLE
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