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

C9-1 (CANH) - Body ground

G - Body ground

CAN communication line

-

-

C9-2 (CANL) - Body ground

W - Body ground

CAN communication line

-

-

C9-4 (MSCH) - Body ground

B - Body ground

Local bus communication line

-

-

C9- 5 (MSCL) - Body ground

W - Body ground

Local bus communication line

-

-

C9-7 (EL) - Body ground

V - Body ground

LH turn indicator light signal (Input)

Ignition switch ON, LH turn signal switch off

11 to 14 V

Ignition switch ON, LH turn signal switch on

Below 1 V

C9-8 (ER) - Body ground

GR - Body ground

RH turn indicator light signal (Input)

Ignition switch ON, RH turn signal switch off

11 to 14 V

Ignition switch ON, RH turn signal switch on

Below 1 V

C9-9 (SW) - Body ground

R - Body ground

Turn switch signal

Ignition switch ON, LH and RH turn signal switch off

11 to 14 V

Ignition switch ON, LH or RH turn signal switch on

Below 1 V

C9-11 (BKSW) - Body ground

L - Body ground

Stop light switch signal

Stop light switch on

11 to 14 V

Stop light switch off

Below 1 V

C9-13 (HAZ) - Body ground

Y - Body ground

Hazard warning signal switch signal

Ignition switch ON, hazard warning signal switch not pressed

11 to 14 V

Ignition switch ON, hazard warning signal switch pressed

Below 1 V

C9-15 (ILL-) - Body ground

BE - Body ground

Illumination signal

Headlight dimmer switch off

Below 1 V

Headlight dimmer switch in tail or head position

Pulse generation

C9-17 (EP) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

C9-18 (ES) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

C9-19 (B) - Body ground

P - Body ground

Battery

Always

11 to 14 V

C9-20 (IG+) - Body ground

BE - Body ground

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

C9-21 (L) - C9-23 (E3)

BE - G

Fuel level signal

Ignition switch ON, fuel level full

Below 1 V

Ignition switch ON, fuel level low (fuel level warning light on)

4.5 to 9 V

C9-25 (S) - Body ground

LG - Body ground

Oil pressure signal

Ignition switch ON, oil pressure warning OFF

11 to 14 V

Ignition switch ON, oil pressure warning ON

Below 1 V

C9-26 (WLVL) - Body ground*1

B - Body ground

Washer fluid level signal

Ignition switch ON, washer fluid level not low

11 to 14 V

Ignition switch ON, washer fluid level low

Below 1 V

C9-28 (SW) - Body ground*2

LG - Body ground

Brake fluid level signal

Ignition switch ON, brake fluid level not low

11 to 14 V

Ignition switch ON, brake fluid level low

Below 1 V

C9-30 (MSM+) - Body ground

P - Body ground

Steering pad switch assembly signal

Ignition switch ON, enter, top and back switches on steering pad switch assembly not pushed

4.8 to 5.2 V

Ignition switch ON, enter, top or back switches on steering pad switch assembly pushed

Below 1 V

C9-32 (MSSL) - Body ground

SB - Body ground

Steering pad switch assembly signal

Ignition switch ON, enter, top and back switches on steering pad switch assembly not pushed

4.8 to 5.2 V

Ignition switch ON, enter, top or back switches on steering pad switch assembly pushed

Below 1 V

C9-34 (MSTI) - Body ground

L - Body ground

Steering pad switch assembly signal

Ignition switch ON, up, down, right, and left switches on steering pad switch assembly not pushed

4.8 to 5.2 V

Ignition switch ON, up, down, right, or left switches on steering pad switch assembly pushed

Below 1 V

C9-36 (OIL) - Body ground*3

W - Body ground

Oil level switch signal

Ignition switch ON, oil level low

11 to 14 V

Ignition switch ON, oil level not low

Below 1 V

C9-37 (VCM) - Body ground*2*3

LG - Body ground

Vacuum switch signal

Ignition switch ON, vacuum pressure not low

11 to 14 V

Ignition switch ON, vacuum pressure low

Below 1 V

C9-39 (SI) - Body ground

G - Body ground

Speed signal for other system (Input)

Ignition switch ON, wheel being rotated

Pulse generation (See waveform 1)

C9-40 (+S) - Body ground

V - Body ground

Speed signal for other system (Output)

Ignition switch ON, wheel being rotated

Pulse generation (See waveform 1)

C10-1 (B) - Body ground

V - Body ground

Battery

Always

11 to 14 V

C10-3 (RRT) - Body ground

L - Body ground

RH turn indicator light signal (Input)

Ignition switch ON, RH turn signal switch off

Below 1 V

Ignition switch ON, RH turn signal switch on

11 to 14 V ←→ Below 1 V

C10-5 (RLT) - Body ground

Y - Body ground

LH turn indicator light signal (Output)

Ignition switch ON, LH turn indicator light off

Below 1 V

Ignition switch ON, LH turn indicator light blinking

11 to 14 V ←→ Below 1 V

C10-9 (LL) - Body ground

BE - Body ground

LH turn indicator light signal (Output)

Ignition switch ON, LH turn indicator light off

Below 1 V

Ignition switch ON, LH turn indicator light blinking

11 to 14 V ←→ Below 1 V

C10-11 (TLT) - Body ground*4

V - Body ground

LH turn indicator light signal (Output)

Ignition switch ON, LH turn indicator light off

Below 1 V

Ignition switch ON, LH turn indicator light blinking

11 to 14 V ←→ Below 1 V

C10-12 (TRT) - Body ground*4

SB - Body ground

RH turn indicator light signal (Output)

Ignition switch ON, RH turn signal switch off

Below 1 V

Ignition switch ON, RH turn signal switch on

11 to 14 V ←→ Below 1 V

C10-13 (B) - Body ground

W - Body ground

Battery

Always

11 to 14 V

C10-10 (LR) - Body ground

SB - Body ground

RH turn indicator light signal (Output)

Ignition switch ON, RH turn indicator light off

Below 1 V

Ignition switch ON, RH turn indicator light blinking

11 to 14 V ←→ Below 1 V

Tool Setting

5 V/DIV., 20 ms./DIV.

Vehicle Condition

Ignition switch ON, wheel being rotated