Initialization

AA80E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: INITIALIZATION

1. PERFORM ROAD TEST TO ALLOW TCM TO LEARN

CAUTION:
* Perform the following procedures while strictly observing all traffic laws and speed limits.
* Do not accelerate or decelerate rapidly.
(a) "Road test" procedure is as follows:

(1) Warm up the engine.

(2) According to the replaced parts, perform the road test shown below.
















HINT
* *1: After gradually accelerating for a distance of approximately 130 m (426.4 ft.) for a period of approximately 15 seconds, gradually decelerate for a distance of approximately 45 m (147.6 ft.) for a period of approximately 5 seconds.
* *2: Accelerate the vehicle to a speed slightly higher than 50 km/h (31 mph).
Move the shift lever to M and select 5th gear.
Release the accelerator pedal and allow the vehicle to decelerate gradually.
When the vehicle decelerates to approximately 50 km/h (31 mph), downshift to 4th gear.
When the vehicle decelerates to approximately 40 km/h (25 mph), downshift to 3rd gear.
When the vehicle decelerates to approximately 30 km/h (19 mph), downshift to 2nd gear.
* When decelerating, apply the brakes as necessary to adjust the vehicle speed.





HINT
* *1: The speed, time and distance values are approximate values.
* *2: After accelerating, the deceleration does not need to be performed immediately.
* *3: There is no specified time or distance.

(3) Repeat the road tests until the shift shock and engine speed overrun (engine speed flare when shifting) reach an acceptable level.

NOTICE:
When repeating the acceleration/deceleration cycle of a road test pattern, bring the vehicle to a complete stop before accelerating again.

2. RESET MEMORY

NOTICE:
* Perform Reset Memory (AT initialization) when replacing the engine assembly or ECM.
* Reset Memory can be performed only with the Techstream.
* Reset Memory cannot be completed by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

HINT
The TCM (ECT) memorizes the vehicle conditions when controlling the automatic transmission assembly and engine assembly.

(a) The "Reset Memory" procedure is as follows:

(1) Turn the engine switch off.

(2) Connect the Techstream to the DLC3.

(3) Turn the engine switch on (IG).

(4) Turn the Techstream on.

(5) Enter the following menus: Powertrain / ECT / Utility / Reset Memory.

NOTICE:
After performing the Reset Memory, be sure to perform the Road Test described previously Road Test.