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:

Dtc Check / Clear
DTC CHECK / CLEAR 1. DTC CHECK USING TECHSTREAM (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 / Air Conditioner / Trouble Codes. (e) Check for DTCs. 2. DTC CLEAR USING TECHSTREAM (a) Conn ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK BRAKE BOOSTER ASSEMBLY (a) Airtightness check. Text in Illustration *a Correct *b Incorrect (1) Start the engine and stop it after 1 or 2 minut ...

Camper information
This information has been prepared in accordance with regulation issued by the National Highway Traffic Safety Administration of the U.S. Department of Transportation. It provides the purchasers and/or prospective purchasers of Toyota vehicles with information on truck-camper loading. Your Toy ...

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