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:
General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in the TOYOTA TACOMA.
In general, ECU controlled systems are considered to be very intricate,
requiring a high level of technical knowledge to troubleshoot. However,
most problem checking procedures only involv ...
Freeze Frame Data
FREEZE FRAME DATA
1. CHECK FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Navigation System / Trouble
Codes.
(e) Select a PTC to display its Freeze Frame Data.
2. LIST ...
Operation Check
OPERATION CHECK
1. MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY)
(a) Open circuit indication
(1) If there is an open circuit between a No. 1 ultrasonic sensor and the clearance
warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed
as shown in the illustration.
...
