Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Oxygen sensor circuit no activity detected

Toyota Corolla (E120): Oxygen sensor circuit no activity detected

Dtc p0134 oxygen sensor circuit no activity detected (bank 1 sensor 1)

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Circuit description
The actuator motor is operated by signals from the cruise control ecu assy. Acceleration and deceleration signals are transmitted by changes in the duty ratio (see below). Duty ratio: the duty ratio is the ratio of the period of continuity in one cycle. For example, if a is the period of co ...

Replacement
1. Remove engine under cover rh 2. Remove cylinder head cover no.2 Remove the 2 screw, 3 clips and engine under cover. 3. Remove fan and generator v belt Turn the v–ribbed belt tensioner slowly clockwise and loosen it. Then, remove the fan and generator v belt and put back ...

Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the horn button assy and the airbag sensor assy center.  for the blac ...