Check Harness And Connector Af Sensor Ecm Af Sensor Af Sensor Heater Relay

Wire Harness Side:

A/F Sensor Connector

A/F Sensor Connector

ECM Connector

ECM Connector

(a) Check the harness and the connector between the ECM and the A/F sensor.

(1) Disconnect the A4 or A5 A/F sensor connector.

(2) Disconnect the E5 ECM connector.

(3) Check the resistance.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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