Toyota Tacoma (2015-2018) Service Manual: Initialization
INITIALIZATION
1. RESET MEMORY
NOTICE:
- Perform Reset Memory (AT initialization) when replacing the automatic transmission assembly, transmission valve body assembly or any of the shift solenoid valves.
- Reset Memory can be performed only with the Techstream.
HINT:
The ECM memorizes the vehicle conditions when the ECT controls the automatic transmission assembly and transmission valve body assembly. Therefore, when the automatic transmission assembly, transmission valve body assembly or any of the shift solenoid valves has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.
The reset procedure is as follows.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory.
NOTICE:
After performing Reset Memory, be sure to perform the Road Test (See page
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) described earlier.
HINT:
The ECM learns through the Road Test.
2. ATF THERMAL DEGRADATION ESTIMATE RESET
NOTICE:
If either of the following conditions is met, perform ATF Thermal Degradation Estimate Reset.
- The ATF has been replaced.
HINT:
If 50000 or more is displayed for the Data List item "ATF Thermal Degradation Estimate", thermal degradation of the ATF is suspected. Perform ATF Thermal Degradation Estimate Reset after replacing the ATF.
- Approximately 50% or more of the ATF has been replaced during a repair of the transmission or a similar operation.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
NOTICE:
Do not start the engine.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / ATF Thermal Degradation Estimate Reset.
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down ...
Manual Shifting Test
MANUAL SHIFTING TEST
1. PERFORM MANUAL SHIFTING TEST
HINT:
Using this test, it can be determined whether a problem is in an electrical
circuit or if it is a mechanical problem in the tr ...
Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the parts listed in
the table below and proceed to the "See page" given.
*1: "Comes on" means the Malfunction Indicator Lamp (MIL) illuminates.
*2: "DTC stored" means ...
PTC Heater Circuit
DESCRIPTION
PTC HTR heater relays are closed in accordance with signals from the air conditioning
amplifier assembly and power is supplied to the quick heater assembly installed
on the radiator heater unit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits rela ...
SM Solenoid Circuit (C1225,C1468,C1469,C146A,C146B)
DESCRIPTION
These solenoids turn on when signals are received from the skid control ECU (brake
actuator assembly) and they control the pressure acting on the wheel cylinders to
control the braking force.
DTC No.
Detection Item
DTC Detection Condition
...
