DTC P0032 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
DTC P0032 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1) |
DTC DETECTING CONDITION:
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Immediately at fault recognition
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GENERAL DESCRIPTION
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Important | ||
After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode . |
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WIRING DIAGRAM:
CHECK OUTPUT SIGNAL FROM ECM.
Turn the ignition switch to ON.Measure the voltage between ECM connector and chassis ground.
Connector & terminal
(B134) No. 2 (+) — Chassis ground (−):
(B134) No. 3 (+) — Chassis ground (−):
Is the voltage more than 8 V?
Yes |
No |
CHECK FRONT OXYGEN (A/F) SENSOR HEATER CURRENT.
Turn the ignition switch to OFF.Repair the battery short circuit in harness between ECM and front oxygen (A/F) sensor connector.
Turn the ignition switch to ON.
Read the data of front oxygen (A/F) sensor heater current using Vehicle Diagnostic Interface or the OBD-II general scan tool.
Is the current more than 2.3 A?
Yes |
No |
END
CHECK OUTPUT SIGNAL FROM ECM.
Measure the voltage between ECM connector and chassis ground.Connector & terminal
(B134) No. 2 (+) — Chassis ground (−):
(B134) No. 3 (+) — Chassis ground (−):
Does the voltage change by shaking the ECM harness and connector?
Yes |
Repair battery short circuit in harness between ECM and front oxygen (A/F) sensor connector.
No |
END