Toyota Tacoma manuals

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

TERMINALS OF ECU

1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION BLOCK

(a) Remove the main body ECU (multiplex network body ECU) from the driver side

(a) Remove the main body ECU (multiplex network body ECU) from the driver side junction block (See page (b) Disconnect the 1D driver side junction block connector. ).

(b) Disconnect the 1D driver side junction block connector.

(c) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

MB-11 (GND1) - Body ground

None - Body ground

Ground

Always

Below 1 Ω

MB-31 (BECU) - Body ground

None - Body ground

Battery power supply

Always

11 to 14 V

MB-30 (ACC) - Body ground

None - Body ground

ACC power supply

Ignition switch ON(ACC)

11 to 14 V

MB-32 (IG) - Body ground

None - Body ground

Ignition switch power supply

Ignition switch ON(IG)

11 to 14 V

1D-31 (KSW) - Body ground

G - Body ground

Unlock warning switch input

No Key in ignition key cylinder (off)

10 kΩ or higher

Key inserted ignition key cylinder (on)

Below 1 Ω

(d) Install the main body ECU (multiplex network body ECU) to the driver side junction block (See page (e) Reconnect the 1D driver side junction block connector. ).

(e) Reconnect the 1D driver side junction block connector.

(f) Measure the voltage and check for pulse according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

M6-6 (FLCY) - Body ground

Y - Body ground

Front door LH courtesy light switch input

Front door LH open

Below 1 V

Front door LH closed

Pulse generation

1D-31 (KSW) - Body ground

G - Body ground

Unlock warning switch input

No Key in ignition key cylinder (off)

11 to 14 V

Key inserted ignition key cylinder (on)

Below 1 V

Diagnosis System
DIAGNOSIS SYSTEM 1. CHECK DLC3 (a) Check the DLC3 (See page ). 2. INSPECT BATTERY VOLTAGE (a) Measure the battery voltage. Standard voltage: 11 to 14 V If the voltage is below 11 V, replace t ...

Key Reminder Buzzer does not Sound
DESCRIPTION The key reminder warning buzzer sounds when the driver side door is opened while the ignition switch is in the LOCK or ACC positions. The key reminder warning buzzer is activated when ...

Other materials:

GPS Mark is not Displayed
PROCEDURE 1. CHECK CABIN (a) Check the cabin for any object that might interrupt radio reception or additional devices which use radio waves on the instrument panel. If such an object exists, remove it and check if the GPS mark reappears. HINT: The GPS uses ex ...

Removal
REMOVAL PROCEDURE 1. REMOVE NO. 2 ENGINE UNDER COVER SUB-ASSEMBLY (w/ Off Road Package) 2. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY 3. DRAIN ENGINE COOLANT 4. REMOVE RADIATOR GRILLE (See page ) 5. REMOVE V-BANK COVER SUB-ASSEMBLY 6. REMOVE RADIATOR SUPPORT TO FRAME SEAL 7. R ...

Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) When a pre-collision system DTC is stored, the millimeter wave radar sensor assembly stores the current vehicle (ECU or sensor) state as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c ...

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