1. Problem symptom confirmation
2. Perform road test
Notice
: conduct the test at normal operating atf temperature 50 to 80 °c (122 to 176 °f).
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
O/d and 3rd gear lock–up prohibition control
3Rd gear lock–up prohibition control
Check for shock and slip at the 1 " 2, 2 " 3 and 3 " o/d up–shift.
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 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 .
If there is a big jump in engine speed, there is no lock–up.
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.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect.
While running in the l position, check that there is no up–shift to 2nd gear.
While running in the l position, release the accelerator pedal and check the engine braking effect.
Caution
: before conducting this test ensure that the test area is free from people and obstruction.
Check that the vehicle does not move.
Inspection procedure
1 Check operation(overdrive)
Drive the vehicle after the engine warms up.
check that overdrive on e off occurs by an operation of the o/d
switch on–off.
2 Inspect terminal voltage(od)
Remove the cruise control ecu assy with the connector
still connected.
turn ...
Circuit description
When the idle switch is turned on, a signal is sent to the cruise control ecu
assy. The cruise control ecu
assy uses this signal to correct the discrepancy between the throttle valve
position and the actuator position
sensor values to enable accurate cruise control at the set speed. If the idl ...
Inspection procedure
1 Check security indicator light
Set the system in 30 seconds after filliping the security indicator to
check if the alarm is triggered.
2 Check glass breakage sensor ecu (glass breakage sensor)
Check the continuity and voltage of the glass breakage
sensor ecu, as shown in th ...