Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Electronic controlled automatic transaxle / Manual shifting test
Toyota Corolla (E120): Manual shifting test
1. Perform manual shifting test
Hint
: by this test, it can be determined whether the trouble is within the electrical circuit or is a mechanical problem in the transaxle.

- Disconnect the transmission wire connector.
- inspect the manual driving operation.
Check that the shift and gear positions correspond to the table below.
While driving, shift through the l, 2 and d positions.
Check that the gear change corresponds to the shift position.

Hint
: if the gear positions of the l, 2 and d are difficult to distinguish, do the following road test.
If any abnormality is found in the above test, the problem is in the transaxle itself.
- Connect the transmission wire connector.
- clear the dtc
Other materials:
Repair
1. Steering off center repair procedure
Inspect steering wheel off center.
Apply masking tape on the top center of the steering
wheel and steering column upper cover.
Driving the vehicle on a straight line for 100 meters
at a constant speed of 35 mph (56 km/h), and ho ...
Monitor description
Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure
sensor malfunctions.
P0451
The ecm senses pressure in the fuel tank using the vapor pressure sensor. The
ecm supplies the sensor
with a regulated 5 v reference–voltage and the sensor returns a signal voltage
betwee ...
Circuit description
The purpose of this circuit is to prevent the engine from stalling while
driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ecm. Then
the ecm cancels the operation
of the lock–up clutch while braking is i ...


