Toyota Corolla (E120): Road test
1. Problem symptom confirmation
- Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms of the trouble. If the problem is that the transaxle does not shift up, shift down, or the shift point is too high or too low conduct the following road test referring to the automatic shift schedule and simulate the problem symptoms.
2. Perform road test
Notice
: conduct the test at normal operating atf temperature 50 to 80 °c (122 to 176 °f).
- D position test shift into the d position and fully depress the accelerator pedal and check the following points:
- check up–shift operation.
Check that 1 " 2, 2 " 3 and 3 " o/d up–shift takes place, and that the shift points conform to the automatic shift schedule .
Hint
: o/d gear up–shift prohibition control
- coolant temp. Is 55 °c (131 °f) or less and vehicle speed is 70 km/h (43 mph) or less.
O/d and 3rd gear lock–up prohibition control
- brake pedal is depressed.
- Accelerator pedal is released.
- Coolant temp. Is 55 °c (131 °f) or less.
3Rd gear lock–up prohibition control
- o/d main switch off (o/d on)
- check for shift shock and slip.
Check for shock and slip at the 1 " 2, 2 " 3 and 3 " o/d up–shift.
- Check for abnormal noises and vibration.
Run in d position lock–up or o/d gear and check for abnormal noises and vibration.
Hint: the check for the cause of abnormal noises and vibration must be done very thoroughly as it could also be sure to loss of balance in the differential, torque converter, etc.
- Check kick–down operation.
Check that the possible kick–down vehicle speed limits for 2nd to 1st, 3rd to 2nd, o/d to 3rd kick– downs conform to those indicated on the automatic shift schedule while driving through all gears with the shift lever in the d position .
- Check for abnormal shock and slip at kick–down.
- Check the lock–up mechanism.
- Drive in d position o/d gear, at a steady speed (lock–up on) of about 60 km/h (37 mph).
- Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
If there is a big jump in engine speed, there is no lock–up.
- 2 position test shift into the 2 position and fully depress the accelerator pedal and check the following points:
- check up–shift operation.
Check that the 1 " 2 up–shift takes place and that the shift point conforms to the automatic shift schedule .
Hint
: there is no o/d up–shift and lock–up in the 2 position.
- Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect.
- Check for abnormal noises during acceleration and deceleration, and for shock at up–shift and down–shift.
- l position test shift into the l position and fully depress the accelerator pedal and check the following points:
- check no up–shift.
While running in the l position, check that there is no up–shift to 2nd gear.
- Check engine braking.
While running in the l position, release the accelerator pedal and check the engine braking effect.
- Check for abnormal noises during acceleration and deceleration.
- r position test
shift into the r position and fully depress the accelerator pedal and check
for slipping.
Caution
: before conducting this test ensure that the test area is free from people and obstruction.
- p position test
stop the vehicle on a grade (more than 5°), shift into the p position and
release the parking brake.
Check that the vehicle does not move.
Other materials:
Preparations to use wireless communication
The following can be performed using Bluetooth® wireless communication:
■ A portable audio player can be operated and listened to via multimedia system
■ Hands-free phone calls can be made via a cellular phone In order to use wireless
communication, register and connect a Bluetooth ...
Check and replace ecu
Notice:
start an inspection of the connector from the backside
of the connector on the wire harness side with
the connector connected to the ecu.
When no measurement condition is specified, perform
the inspection with the engine stopped and also
the ignition switch on.
First check the ec ...
Wireless charger (if
equipped)
A portable device, such as a
smartphone or mobile battery,
can be charged by just placing it
on the charging area, provided
the device is compatible with the
Qi wireless charging standard
created by the Wireless Power
Consortium.
The wireless charger cannot be
used with a portable device that is la ...