DTC P1153 O2 Sensor Circuit Range/Performance (High) (Bank1 Sensor1)

DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
GENERAL DESCRIPTION <Ref. to DTC P1153 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK 1 SENSOR 1) . >

CAUTION: After repairing or replacing the defective part, carry out the Clear Memory Mode <Ref. to OPERATION , CLEAR MEMORY MODE. > and Inspection Mode <Ref. to PROCEDURE , INSPECTION MODE. >.

WIRING DIAGRAM:

Fig 1: O2 Sensor Circuit Range/Performance (Bank1 Sensor1) - Wiring Diagram

DIAGNOSTICS PROCEDURE CHART

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from ECM. Measure the resistance of harness between ECM connector and chassis ground. Connector & terminal (B135) No. 9 - Chassis ground:	Is the resistance more than 1 MΩ?	Repair the ground short circuit of harness between ECM and front oxygen (A/F) sensor connector.	Go to step 2.
2 CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR. Measure the resistance of harness between ECM connector and chassis ground. Connector & terminal (B135) No. 8 - Chassis ground:	Is the resistance more than 1 MΩ?	Repair the ground short circuit of harness between ECM and front oxygen (A/F) sensor connector.	Go to step 3.
3 CHECK OUTPUT SIGNAL FOR ECM. Connect the connector to ECM. Turn the ignition switch to ON. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 9 (+) - Chassis ground <-):	Is the voltage more than 4.5 V?	Go to step 4.	Go to step 5.
4 CHECK OUTPUT SIGNAL FOR ECM. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 9 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Repair the battery short circuit of harness between ECM and front oxygen (A/F) sensor connector. After repair, replace the ECM. <Ref. to ENGINE CONTROL MODULE (ECM) . >	Repair poor contact in ECM connector.
5 CHECK OUTPUT SIGNAL FOR ECM. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 8 (+) - Chassis ground (-):	Is the voltage more than 4.95 V?	Go to step 6.	Replace the front oxygen (A/F) sensor. <Ref. to FRONT OXYGEN (A/F) SENSOR . >
6 CHECK OUTPUT SIGNAL FOR ECM. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 8 (+) - Chassis ground (-):	Is the voltage more than 10 V?	Repair the battery short circuit of harness between ECM and front oxygen (A/F) sensor connector. After repair, replace the ECM. <Ref. to ENGINE CONTROL MODULE (ECM) . >	Repair poor contact in ECM connector.