Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu
TERMINALS OF ECU
1. COMBINATION METER ASSEMBLY
(a) Measure the voltage, resistance and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
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 |
- *1: Washer Fluid Level Warning
- *2: for Vacuum Booster Type
- *3: for 2GR-FKS
- *4: w/ Trailer Towing System
(1) Waveform 1 (Reference):
|
Item |
Condition |
|---|---|
|
Tool Setting |
5 V/DIV., 20 ms./DIV. |
|
Vehicle Condition |
Ignition switch ON, wheel being rotated |
HINT:
When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptom
are list ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any p ...
Other materials:
Poor Sound Quality in All Modes (Low Volume)
PROCEDURE
1.
CHECK AUDIO SETTINGS
(a) Set Treble, Mid and Bass to the initial values and check that sound is normal.
OK:
Malfunction disappears.
HINT:
Sound quality adjustment measures vary according to the type of amplifier.
OK
END
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
HINT:
The valve opening temperature is inscribed on the water inlet with thermostat
sub-assembly.
(a) Immerse the thermostat in the water, then heat the water gradually.
CAUTION:
Do not your hands into the wa ...
Short to +B in Outer Mirror Indicator(Slave) (C1AB1)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor RH detects a +B short in
the blind spot monitor indicator RH.
DTC Code
DTC Detection Condition
Trouble Area
C1AB1
With the blind spot monitor main switch assembly (warni ...
