M/T

DTC P1130 - FRONT OXYGEN (A/F) SENSOR CIRCUIT MALFUNCTION (OPEN CIRCUIT)

DTC DETECTING CONDITION:
- Two consecutive driving cycles with fault

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How To Clear Diagnostic Trouble Codes.

Wiring Diagram:

WIRING DIAGRAM

10BY1: CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.

1. Turn ignition switch to OFF.
2. Disconnect connectors from ECM and from oxygen (A/F) sensor connector.

Connector & Terminal - [(B136) No.7 - (B18) No.1]:

3. Measure resistance of harness between ECM and front oxygen (A/F) sensor connector.

CHECK: Is the resistance less than 1 Ohm?

YES: Go to step 10BY2.

NO: Repair harness and connector.

NOTE: In this case, repair the following:
- Open circuit in harness between ECM and front oxygen (A/F) sensor connector
- Poor contact in front oxygen (A/F) sensor connector
- Poor contact in ECM connector

10BY2: CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.

Connector & Terminal - [(B136) No.20 - (B18) No.3]:

Measure resistance of harness between ECM and front oxygen (A/F) sensor connector.

CHECK: Is the resistance less than 1 Ohm?

YES: Go to step 10BY3.

NO: Repair harness and connector.

NOTE: In this case, repair the following:
- Open circuit in harness between ECM and front oxygen (A/F) sensor connector
- Poor contact in front oxygen (A/F) sensor connector
- Poor contact in ECM connector

10BY3: CHECK POOR CONTACT.
Check poor contact in front oxygen (A/F) sensor connector.

CHECK: Is there poor contact in front oxygen (A/F) sensor connector?

YES: Repair poor contact in front oxygen (A/F) sensor connector.

NO: Replace front oxygen (A/F) sensor.