General Precautions

Before connecting or disconnecting the TCM harness connector, turn ignition switch OFF and disconnect negative battery cable. Because battery voltage is applied to TCM even if ignition switch is turned OFF.

Fig 1: Disconnecting Negative Battery Cable
Courtesy of NISSAN MOTOR CO., U.S.A.
When connecting or disconnecting pin connectors into or from TCM, take care not to damage pin terminals (bend or break).
Make sure that there are not any bends or breaks on TCM pin terminal, when connecting pin connectors.

Fig 2: Damaging TCM Pins
Courtesy of NISSAN MOTOR CO., U.S.A.
Before replacing TCM, perform TCM input/output signal inspection and make sure whether TCM functions properly or not. See Figure under TCM Input/Output Signal Reference Values.
After performing each TROUBLE DIAGNOSIS, perform "DTC (Diagnostic Trouble Code) CONFIRMATION PROCEDURE".
If the repair is completed the DTC should not be displayed in the "DTC CONFIRMATION PROCEDURE".

Fig 3: Identifying Instrument Panel DTC Indicator Lamp
Courtesy of NISSAN MOTOR CO., U.S.A.

When removing the RE5R05A model transmission from a vehicle, do not use the companion flange section at the rear end of the transmission as a support point.
Always use the specified brand of A/T fluid. Refer to " FLUIDS AND LUBRICANTS " .
Use paper rags not cloth rags during work.
After replacing the A/T fluid, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
Before proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter.
Disassembly should be done in a clean work area.
Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere with the operation of the transmission.
Place disassembled parts in order for easier and proper assembly.
All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly.
Gaskets, seals and O-rings should be replaced any time the transmission is disassembled.

Fig 4: Improper Supporting & Lifting Procedures For Transmissions
Courtesy of NISSAN MOTOR CO., U.S.A.
It is very important to perform functional tests whenever they are indicated.
The valve body contains precision parts and requires extreme care when parts are removed and serviced. Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs and small parts from becoming scattered or lost.
Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and seals, or hold bearings and washers in place during assembly. Do not use grease.
Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
After overhaul, refill the transmission with new ATF.
When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque converter and ATF cooling system.
Always follow the procedures under "Changing A/T Fluid" in the A/T section when changing A/T fluid. Refer to CHECKING A/T FLUID and CHANGING A/T FLUID under A/T FLUID.