SAAB WIS ONLINE

DTC P1153 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK1 SENSOR1)

DTC P1153 O 2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK1 SENSOR1)

DTC DETECTING CONDITION:


• Two consecutive driving cycles with fault

• GENERAL DESCRIPTION


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.

Turn the ignition switch to OFF.

Disconnect the connector from ECM.

Measure the resistance of harness between ECM connector and chassis ground.

Connector & terminal

(B84) No. 19 — Chassis ground:

Is the resistance more than 1 MΩ?

Yes

Repair the ground short circuit in harness between ECM and front oxygen (A/F) sensor connector.


No


CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.

Measure the resistance of harness between ECM connector and chassis ground.

Connector & terminal

(B84) No. 29 — Chassis ground:

Is the resistance more than 1 MΩ?

Yes

Repair the ground short circuit in harness between ECM and front oxygen (A/F) sensor connector.


No


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

(B84) No. 19 (+) — Chassis ground (−):

Is the voltage more than 4.5 V?

Yes


No


CHECK OUTPUT SIGNAL FOR ECM.

Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B84) No. 19 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes

Repair the battery short circuit in harness between ECM and front oxygen (A/F) sensor connector. After repair, replace the ECM.


No

Repair the poor contact in ECM connector.


CHECK OUTPUT SIGNAL FOR ECM.

Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B84) No. 29 (+) — Chassis ground (−):

Is the voltage more than 4.95 V?

Yes


No

Replace the front oxygen (A/F) sensor.


CHECK OUTPUT SIGNAL FOR ECM.

Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B84) No. 29 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes

Repair the battery short circuit in harness between ECM and front oxygen (A/F) sensor connector. After repair, replace the ECM.


No

Repair the poor contact in ECM connector.