Toyota Tacoma (2015-2018) Service Manual: Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
HINT:
Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.
- Clear DTCs (See page
.gif)
). - Switch the ECM from normal mode to check mode using the Techstream (See
page ).
- Perform a simulation test (See page
).
- Check and wiggle the harness(es), connector(s) and terminal(s) (See
page ).
System Diagram
SYSTEM DIAGRAM
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the manual transaxle system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGH ...
Other materials:
Operation History List
OPERATION HISTORY LIST
NOTICE:
The cause of a malfunction is stored in the RAM or EEPROM in the certification
ECU (smart key ECU assembly). As the cause of a malfunction stored in the
RAM will be cleared when the cable is disconnected from the negative (-)
battery terminal, do ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK ENGINE SWITCH
(a) Measure the resistance and voltage according to the value(s) in the table
below.
Terminal No. (Symbol)
Input/Output
Wiring Color
Terminal Description
Condition
Specified Condition
...
Lost Communication With Vehicle Dynamics Control Module (U0122)
DESCRIPTION
This DTC is detected if communication is lost with the skid control ECU (brake
actuator assembly).
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0122
Lost Communication with Vehicle Dynamics Contro ...
