Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Terminals Of Ecu

TERMINALS OF ECU

1. OCCUPANT DETECTION ECU

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specification

+B (O5-1) -

GND (O5-3)

R - W-B

Battery

Ignition switch on

10 to 14 V

DIA (O5-2) -

GND (O5-3)

W - W-B

Diagnosis (DLC3)

Ignition switch on

Pulse generation

GND (O5-3) -

Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

FSR- (O5-4) -

GND (O5-3)

B - W-B

Airbag sensor assembly communication line (-)

Always

Below 1 Ω

BGND (O5-5) -

GND (O5-3)

P-G - W-B

Passenger side buckle switch ground line

Always

Below 1 Ω

IG (O5-7) -

GND (O5-3)

BE - W-B

Power source (IGN Fuse)

Ignition switch on

10 to 14 V

FSR+ (O5-8) -

FSR- (O5-4)

W - B

Airbag sensor assembly communication line

Ignition switch on

Pulse generation

BSW (O5-9) -

BGND (O5-5)

G - P-G

Passenger side buckle switch line

Buckle switch ON

Buckle switch OFF

Pulse generation

SGD1 (O4-1) -

GND (O5-3)

L - W-B

Occupant classification sensor front LH ground line

Always

Below 1 Ω

SGD2 (O4-2) -

GND (O5-3)

BE - W-B

Occupant classification sensor front RH ground line

Always

Below 1 Ω

SGD3 (O4-3) -

GND (O5-3)

P-G - W-B

Occupant classification sensor rear LH ground line

Always

Below 1 Ω

SGD4 (O4-4) -

GND (O5-3)

B-R - W-B

Occupant classification sensor rear RH ground line

Always

Below 1 Ω

SVC1 (O4-11) -

SGD1 (O4-1)

B-L - L

Occupant classification sensor front LH power supply line

Ignition switch on, a load is applied to occupant classification sensor front LH

4.5 to 5.1 V

SVC2 (O4-12) -

SGD2 (O4-2)

LG-B - BE

Occupant classification sensor front RH power supply line

Ignition switch on, a load is applied to occupant classification sensor front RH

4.5 to 5.1 V

SVC3 (O4-5) -

SGD3 (O4-3)

B -P-G

Occupant classification sensor rear LH power supply line

Ignition switch on, a load is applied to occupant classification sensor rear LH

4.5 to 5.1 V

SVC4 (O4-6) -

SGD4 (O4-4)

GR-L - B-R

Occupant classification sensor rear RH power supply line

Ignition switch on, a load is applied to occupant classification sensor rear RH

4.5 to 5.1 V

SIG1 (O4-7) -

SGD1 (O4-1)

G - L

Occupant classification sensor front LH signal line

Ignition switch on, a load is applied to occupant classification sensor front LH

Pulse generation

SIG2 (O4-8) -

SGD2 (O4-2)

R-L - BE

Occupant classification sensor front RH signal line

Ignition switch on, a load is applied to occupant classification sensor front RH

Pulse generation

SIG3 (O4-9) -

SGD3 (O4-3)

R-B - P-G

Occupant classification sensor rear LH signal line

Ignition switch on, a load is applied to occupant classification sensor rear LH

Pulse generation

SIG4 (O4-10) -

SGD4 (O4-4)

L-R - B-R

Occupant classification sensor rear RH signal line

Ignition switch on, a load is applied to occupant classification sensor rear RH

Pulse generation

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Proceed to the troubleshooting for each circuit in the table below. Symptom Suspected Area See page Passenger seat occ ...

Sleep Operation Failure of Occupant Classification ECU (B1796)
DESCRIPTION During sleep mode, the occupant detection ECU monitors the condition of each sensor while the ignition switch is off. In this mode, if the occupant detection ECU detects an internal m ...

Other materials:

Engine Switch
Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT ENGINE SWITCH (a) Measure the resistance according to the value(s) in the table below. Text in Illustration *a Component without harness connected (Engine Switch) - ...

Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a forward recognition camera system DTC is stored, the forward recognition camera stores the current vehicle state (ECU and sensor information) as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignit ...

TC and CG Terminal Circuit
DESCRIPTION Tire pressure warning system DTCs can be checked by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by blinking the tire pressure warning light. WIRING DIAGRAM PROCEDURE 1. CHECK CAN COMMUNICATION SYSTEM (a) Check for ...

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