Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecm

TERMINALS OF ECM

HINT:

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:

Slip Indicator Light Remains ON
DESCRIPTION The slip indicator light blinks during VSC or TRAC and AUTO LSD operation. When the system fails, the slip indicator light comes on to warn the driver. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When replacing the skid control ECU (master cylinder solenoid), perform ...

Vehicle Speed Sensor "A" No Signal (P050031)
DESCRIPTION Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle speed using the skid control ECU (brake actuator assembly) and speed sensors. Each speed sensor monitors the wheel rotation speed and sends a signal to the skid control ECU. The skid control ECU con ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL INDICATOR LIGHT WIRE SUB-ASSEMBLY (a) Connect the connector to install the indicator light wire sub-assembly to the shift position indicator. (b) Attach the clamp to install the indicator light wire sub ...

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