Toyota Tacoma (2015-2018) Service Manual: Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) The steering lock ECU (steering lock actuator or UPR bracket assembly) stores DTCs when a malfunction occurs in the system. These DTCs can be confirmed by using the Techstream.
NOTICE:
- When using the Techstream with the engine switch off to confirm DTCs or Data List information related to the smart key system, the Techstream may not operate unless either of the following is performed: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle and select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key.
- Do not remove any fuses or disconnect the cable from the negative (-) battery terminal before confirming and recording DTCs as the data stored in the ECUs will be cleared.
- DTCs may have been stored due to problems unrelated to the steering lock system. Be sure to confirm and record any DTCs output for other systems.
(b) The steering lock ECU (steering lock actuator or UPR bracket assembly) is not connected to the CAN communication system. Therefore, communication with the Techstream is performed via the certification ECU (smart key ECU assembly).
(c) The steering lock ECU (steering lock actuator or UPR bracket assembly) only stores DTCs for currently existing malfunctions. History DTCs are not stored.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Dtc Check / Clear
DTC CHECK / CLEAR
NOTICE:
The steering lock ECU (steering lock actuator or UPR bracket assembly)
does not store history DTCs. If any DTCs are output, confirm and record
them as soon ...
Other materials:
Removal
REMOVAL
PROCEDURE
1. REMOVE FUEL PUMP ASSEMBLY (for High Pressure)
(See page )
2. REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY
(a) Loosen the 2 union nuts and remove the No. 2 fuel pipe sub-assembly from
the fuel delivery pipe RH and fuel delivery pipe sub-assembly LH.
Text in Illustration
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The ECM of this system is connected to the CAN communication system.
Therefore, before starting troubleshooting, make sure to check that there
is no trouble in the CAN and multiplex communication system.
*: Use the Techstream.
PROCEDURE
...
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment
or repair. Contact your Toyota dealer as soon as possible.
■ Visible sympt
● Fluid leaks under the vehicle (Water dripping from the air conditioning after
use is normal.)
● Flat-looking tires ...
