Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecm
TERMINALS OF ECM
HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
E14-2 (BATT) - E11-1 (E1) |
L - W-B |
Battery (for measuring battery voltage and for ECM memory) |
Always |
11 to 14 V |
|
E12-6 (+BM) - E11-1 (E1) |
GR - W-B |
Power source of throttle actuator |
Always |
11 to 14 V |
|
E14-3 (+B) - E11-1 (E1) |
B - W-B |
Power source of ECM |
Ignition switch ON |
11 to 14 V |
|
E14-4 (+B2) - E11-1 (E1) |
B - W-B |
Power source of ECM |
Ignition switch ON |
11 to 14 V |
|
E14-25 (MREL) - E11-1 (E1) |
GR - W-B |
EFI-MAIN NO. 1 relay operation signal |
Ignition switch ON |
11 to 14 V |
|
E9-26 (VCNE) - E11-1 (E1) |
R - W-B |
Power source of crankshaft position sensor (specific voltage) |
Ignition switch ON |
4.5 to 5.5 V |
|
E9-25 (NE+) - E9-33 (NE-) |
B - G |
Crankshaft position sensor |
Idling |
Pulse generation |
|
E13-24 (SPD) - E11-1 (E1) |
R - W-B |
Vehicle speed signal from combination meter assembly |
Driving at 20 km/h (12 mph) |
Pulse generation |
|
E11-1 (E1) - Body ground |
W-B - Body ground |
Ground circuit of ECM |
Always |
Below 1 Ω |
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) To check DTCs, connect the Techstream to the Data Link Connector 3 (DLC3)
of the vehicle. The Techstream displays DTCs and freeze frame data. The DTCs and
fre ...
Check Mode Procedure
CHECK MODE PROCEDURE
1. DESCRIPTION
Check mode has a higher sensitivity to malfunctions and can detect malfunctions
that cannot be detected in normal mode. Check mode can also detect all of the ma ...
Other materials:
Fuel information
Your vehicle must use only unleaded gasoline.
Select octane rating 87 (Research Octane Number 91) or higher. Use of unleaded
gasoline with an octane rating lower than 87 may result in engine knocking. Persistent
knocking can lead to engine damage.
At minimum, the gasoline you use should meet t ...
Clutch Switch
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the engine switch off, waiting time may be required before disconnecting
the cable from the battery terminal. Therefore, make sure to read the disconnecting
the cable from the battery t ...
Brake Warning Light does not Come ON
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination
meter assembly via CAN communication.
WIRING DIAGRAM
Refer to Brake Warning Light Remains ON (See page
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly) ...
