DTC P0032: A/F/O2 Heater Control Circuit High Bank 1 Sensor 1: Notes
DTC detecting condition:
Immediately at fault recognition
CAUTION:
- After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>CLEAR MEMORY MODE>OPERATION ., and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>INSPECTION MODE>PROCEDURE .
- Use the check board when measuring the ECM terminal voltage and resistance.
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM .
- CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.
- Turn the ignition switch to OFF.
- Measure the voltage between ECM connector and chassis ground.
Connector & terminal
(E158) No. 5 (+) - Chassis ground (-):
Is the voltage 10 V or more?
Yes Repair the short circuit to power in the harness between ECM connector and front oxygen (A/F) sensor connector.
No Go to 2 .
- CHECK GROUND CIRCUIT FOR ECM.
- Disconnect the connector from ECM.
- Measure the resistance between ECM connector and chassis ground.
Connector & terminal
(E158) No. 60 - Chassis ground:
(E158) No. 61 - Chassis ground:
(E158) No. 62 - Chassis ground:
(E158) No. 63 - Chassis ground:
(E158) No. 64 - Chassis ground:
(E158) No. 65 - Chassis ground:
Is the resistance less than 5 Ω?
Repair the poor contact of ECM connector.
Repair the open circuit in harness between ECM connector and engine ground.