PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:
|Stop and start system|
|Variable Gear Ratio Steering System|
|Parking Assist Monitor System|
|Air Conditioning System|
PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED
If any parts are replaced, perform the following procedures as necessary referring to the table below.
|Replaced Part||Reset Memory*1||Set Transmission Compensation Code||Learning by Driving(Road Test)|
|Automatic transmission assembly||-*2||Perform*3||Perform|
(If possible, read the transmission compensation code from the previous TCM)
*1: Reset Memory cannot be completed by only disconnecting and reconnecting the cable to the negative (-) battery terminal.
*2: When "Set Transmission Compensation Code" is performed, "Reset Memory" is automatically completed.
*3: Set the compensation code for the new automatic transmission.
*4: Read the compensation code from the previous TCM, then transfer it to the new TCM.
*5: Set the transmission compensation code of the current automatic transmission.
Registration of the transmission compensation code.
Learning by driving (Road Test).
When using compressed air, always aim away from yourself to prevent Automatic Transmission Fluid (ATF) or kerosene from spraying on your face.
The automatic transmission is composed of precision-made parts. Careful inspection before reassembly is necessary because even a small nick could cause fluid leakage or affect performance.
The procedures are organized so that you work on only one component group at a time. This will help avoid confusion with similar-looking parts of different sub-assemblies being on your workbench at the same time.
The component groups are inspected and repaired from the converter housing side.
Whenever possible, complete the inspection, repair and reassembly before proceeding to the next component group. If a defect is found in a certain component group during reassembly, inspect and repair this group immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep all parts of the group in a separate container while proceeding with disassembly, inspection, repair and reassembly of other component groups.
Use of Toyota Genuine ATF WS is recommended.
All disassembled parts should be washed clean, and compressed air should be blown through any fluid passages and holes.
Dry all parts with compressed air. Never use a piece of cloth.
The recommended ATF or kerosene should be used for cleaning.
After cleaning, the parts should be arranged in the order they were removed for efficient inspection, repair and reassembly.
New discs for the brakes and clutches must be soaked in ATF for at least 15 minutes before reassembly.
All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with ATF prior to reassembly.
All old gaskets and rubber O-rings must be replaced.
Do not apply adhesive cement to gaskets or similar parts.
Make sure that the ends of snap rings are not aligned with any cutouts. Make sure that snap rings are correctly installed into the grooves.
If a worn bushing is to be replaced, the sub-assembly containing the bushing must also be replaced.
Check the thrust bearings and races for wear or damage. Replace them if necessary.
Use petroleum jelly to keep parts in place.