Toyota Tacoma (2015-2018) Service Manual: Definition Of Terms
DEFINITION OF TERMS
|
Term |
Definition |
|---|---|
|
Monitor Description |
Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). |
|
Related DTCs |
A group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic. |
|
Typical Enabling Conditions |
Preconditions that allow the ECM to detect malfunctions. With all preconditions satisfied, the ECM stores a DTC when the monitored value(s) exceeds the malfunction threshold(s). |
|
Sequence of Operation |
Order of monitor priority, applied if multiple sensors and components are involved in a single malfunction detection process. Each sensor and component is monitored in turn and subsequent items are not monitored until the previous detection operation completes. |
|
Required Sensors/Components |
Sensors and components used by the ECM to detect each malfunction. |
|
Frequency of Operation |
Number of times the ECM checks for each malfunction during each driving cycle. "Once per driving cycle" means that the ECM only checks for malfunctions once during a single driving cycle. "Continuous" means that the ECM checks for malfunctions whenever enabling conditions are met. |
|
Duration |
Minimum time for which the ECM must detect continuous deviation in monitored value(s) in order to store a DTC. Timing begins when typical enabling conditions are met. |
|
Typical Malfunction Thresholds |
Value beyond which the ECM will determine that there is a malfunction and store a DTC. |
|
MIL Operation |
Timing of MIL illumination after a malfunction is detected. "Immediate" means that the ECM illuminates the MIL as soon as a malfunction is detected. "2 driving cycles" means that the ECM illuminates the MIL if the same malfunction is detected again during the next driving cycle. |
Precaution
PRECAUTION
IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used ...
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Hydraulic Brake Booster
*B
for Vacuum Brake Booster
*C
for Automatic Transmission
...
Other materials:
Voice Guidance does not Function
PROCEDURE
1.
CHECK VOICE GUIDANCE SETTING
(a) Check that the voice guidance settings are not off.
OK:
Voice guidance settings are not off.
NG
CHANGE VOICE GUIDANCE SETTINGS TO ON
OK
...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING GEAR BOLT
(a) Remove the camshaft timing oil control solenoid assembly (See page
).
(b) Check that the plunger strokes when the plunger in the center of
the camshaft timing gear bolt is pressed.
Standard stroke:
4 ...
Meter Illumination does not Dim at Night
DESCRIPTION
In this circuit, the combination meter assembly auto dimmer signals from the
main body ECU using the CAN communication system (CAN V1 Bus). When the combination
meter assembly an auto dimmer signal, it dims the meter illumination (warning and
indicator lights). The main body ECU ( ...
