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) 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.
Entry Exterior Alarm and Answer-back Buzzer do not Sound
DESCRIPTION
The smart key system (for Entry Function) uses the wireless door lock buzzer
to perform various vehicle exterior warnings. When the conditions of each warning
are met, the certification ECU (smart key ECU assembly) sends a buzzer activation
request signal to the main body ECU (mul ...
Heater Circuit (C1AAE)
DESCRIPTION
The forward recognition camera controls the current supplied to the camera heater
(forward recognition hood).
If the forward recognition camera detects a malfunction in the camera heater
(forward recognition hood) circuit, DTC C1AAE is stored.
DTC No.
Detecti ...
System Diagram
SYSTEM DIAGRAM
Transmitting ECU (Transmitter)
Receiving ECU
Signals
Communication Method
ECM
Skid control ECU
Throttle position signal
Engine speed signal
Accelerator pedal position ...