Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Cruise control system / Open vehicle speed sensor circuit/ Vehicle speed signal abnormal
Toyota Corolla (E120): Open vehicle speed sensor circuit/ Vehicle speed signal abnormal
Dtc 21 open vehicle speed sensor circuit
Dtc 23 vehicle speed signal abnormal
Other materials:
Safe Exit Assist
The safe exit assist is a system
that uses rear side
radar sensors installed on
the inner side of the rear
bumper to help occupants
judge if an approaching
vehicle or bicycle may collide
with a door when opening
it or cancel opening of
the door, to reduce the possibility
of a collision.
WARNING
■C ...
Symptom confirmation and diagnostic trouble code
Hint:
the diagnostic system in corolla has various functions. The first
function is the diagnostic trouble
code (dtc) check, in which a malfunction in the signal circuits to the ecu
is stored in code form in
the ecu memory. Another function is the input signal check, which checks if
...
Circuit description
The rear heated oxygen sensor is used to monitor oxygen concentration in the
exhaust gas. For optimum
catalytic converter operation, the air fuel mixture must be maintained near the
ideal ”stoichiometric” ratio.
The heated oxygen sensor output voltage changes suddenly in the vicinity of ...