FixVault

Signal Circuit Inspection

Check Item Specifications Prerequisite Condition Terminal (+) Terminal (+)
Signal Circuit - Resistance Approx. 0Ω
  1. Ignition SW "OFF"
  2. Disconnect HO2S connector
Both ends of signal terminal of HO2S (B1/S1) harness
  1. Is resistance within the specification?

    YES 

    NO 

    NOTE: HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire(s). Do not attempt to repair the wire(s), connector, or the terminals.