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
.gif)
) 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:
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT ENGINE COOLANT
(See page )
2. INSPECT ENGINE OIL
(See page )
3. INSPECT BATTERY
(See page )
4. INSPECT SPARK PLUG
(See page )
5. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
(a) Remove the air cleaner filter element sub-assembly.
(b) Visu ...
Removal
REMOVAL
PROCEDURE
1. REMOVE INSTRUMENT PANEL LOWER FINISH PANEL SUB-ASSEMBLY
(See page )
2. REMOVE DRIVER SIDE JUNCTION BLOCK
(a) Disconnect the 5 connectors on the front side.
(b) Remove the 2 nuts to separate the driver side j ...
Transfer Shift Motor Control Circuit Circuit Open (P17A8)
DESCRIPTION
This DTC is output when an open circuit in the transfer shift motor drive circuit
is detected.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17A8
Transfer Shift Motor Control Circuit Circuit Open
...
