Toyota Corolla (E120): Open in p squib (2nd step) circuit

Dtc b1186/58 open in p squib (2nd step) circuit

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Replacement
Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove parking brake hole cover sub–assy 4. Remove floor shift shift lever knob sub–assy (m/t transaxle) 5. Remove shifting hole cover sub–assy (m/t transaxle) 6. Remove console panel upper 7. Remove conso ...

Inspection procedure
1 Check ignition or starter switch assy Check the ignition switch, as shown in the illustration and table. Standard: 2 Check fuse (ecu–b) Remove the fuse from the instrument panel j/b.  check the continuity of the fuse. Standard: continuity 3 Check relay (m ...

Circuit description
Refer to dtc p0130 Hint: the ecm provides a pulse width modulated control circuit to adjust current through the heater. The heated oxygen sensor heater circuit uses a relay on the b+ side of the circuit. Monitor description The ecm uses the heated oxygen sensor information to regulate t ...