Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
COMBINATION METER ASSEMBLY
(a) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I4-1 (EP) - Body ground |
Ground | Always |
Below 1 Ω |
|
I4-2 (ES) - Body ground |
Ground | Always |
Below 1 Ω |
|
I4-5 (B) - Body ground |
Auxiliary battery | Ignition switch off |
11 to 14 V |
|
I4-6 (IG+) - Body ground |
Ignition switch signal |
Ignition switch off | Below 1 V |
|
Ignition switch ON | 11 to 14 V | ||
|
I4-8 (+S) - Body ground |
Vehicle speed output signal |
Ignition switch ON, wheel being rotated |
Pulse generation (See waveform 1) |
|
I4-11 (SW) - Body ground*1 |
Brake fluid level warning switch signal |
Ignition switch ON, brake fluid level not low (brake warning light/red (malfunction) off) → low (brake warning light/red (malfunction) on) |
11 to 14 V → Below 1 V |
|
I4-12 (HZSW) - Body ground |
Hazard warning signal switch signal |
Hazard warning signal switch off → on |
11 to 14 V → Below 1 V |
|
I4-13 (WLVL) - Body ground*2 |
Washer fluid level signal |
Ignition switch ON, washer fluid level not low → low |
11 to 14 V → Below 1 V |
|
I4-14 (OILW) - Body ground |
Engine oil level sensor signal |
Ignition switch ON, engine oil level not low → low |
Below 1 V → 11 to 14 V |
|
I4-22 (BKSW) - Body ground |
Stop light signal input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
11 to 14 V → 1.5 V or less |
|
I4-25 (SI) - Body ground |
Vehicle speed input signal |
Ignition switch ON, wheel being rotated |
Pulse generation (See waveform 1) |
|
I4-29 (BKL) - Body ground |
Driver seat belt buckle switch signal |
Ignition switch ON, driver seat belt unfastened → fastened |
Below 1 V → 11 to 14 V |
|
I5-2 (B) - Body ground |
Auxiliary battery | Ignition switch off |
11 to 14 V |
|
I5-5 (LL) - Body ground |
Front turn signal flasher signal (LH side) |
Turn indicator light (LH) blinking |
11 to 14 V → Below 1 V |
|
Turn indicator light (LH) off |
Below 1 V | ||
|
I5-6 (LR) - Body ground |
Front turn signal flasher signal (RH side) |
Turn indicator light (RH) blinking |
11 to 14 V → Below 1 V |
|
Turn indicator light (RH) off |
Below 1 V | ||
|
I5-7 (FR) - I5-25 (FE&B) |
Fuel level signal | Ignition switch ON, fuel receiver gauge indicates F → E (fuel level warning light on) |
Pulse generation (See waveform 3) |
|
I5-10 (TC) - Body ground |
Tail cancel switch signal |
Ignition switch ON, light control rheostat knob not fully turned upward (Tail cancel switch off) → fully turned upward (Tail cancel switch on) |
Below 1 V → 4 to 6 V |
|
I5-11 (SW1) - Body ground |
Light control rheostat (Power source) |
Ignition switch ON | 4 to 6 V |
|
I5-12 (MSTI) - Body ground |
Steering pad switch signal |
Ignition switch ON, up, down, left and right switches on steering pad switch not pushed |
4.8 to 5.2 V |
|
I5-14 (CANL) | CAN communication signal |
- | - |
|
I5-15 (TX-) | Local bus communication signal |
- | - |
|
I5-21 (TRNR) - Body ground |
Side/rear turn signal flasher signal (RH side) |
Turn indicator light (RH) blinking |
11 to 14 V → Below 1 V |
|
Turn indicator light (RH) off |
Below 1 V | ||
|
I5-22 (TRNL) - Body ground |
Side/rear turn signal flasher signal (LH side) |
Turn indicator light (LH) blinking |
11 to 14 V → Below 1 V |
|
Turn indicator light (LH) off |
Below 1 V | ||
|
I5-23 (FV) - Body ground |
Power source for fuel sender gauge |
Ignition switch ON | Pulse generation (See waveform 2) |
|
I5-24 (FR2) - I5-25 (FE&B)*3 |
Fuel level signal | Ignition switch ON, fuel level full → low (fuel level warning light on) |
Pulse generation (See waveform 3) |
|
I5-25 (FE&B) - Body ground |
Ground for fuel sender gauge |
Always | Below 1 Ω |
|
I5-26 (SW3) - Body ground |
Ground for trip switch |
Always | Below 1 Ω |
|
I5-28 (SW2) - Body ground |
Light control rheostat signal |
Ignition switch ON, light control rheostat knob fully turned downward → fully turned upward |
Below 1 V → 4 to 6 V (Gradually change) |
|
I5-29 (MSM+) - Body ground |
Steering pad switch signal |
Ignition switch ON, OK and back switches on steering pad switch not pushed |
4.8 to 5.2 V |
|
I5-31 (CANH) | CAN communication signal |
- | - |
|
I5-32 (TX+) | Local bus communication signal |
- | - |
- *1: for Gasoline Model
- *2: w/ Washer Fluid Level Warning System
- *3: for AWD
(b) Check for pulses according to the value(s) in the table below.
- Waveform 1:
Item
Condition
Tester connection
- I4-25 (SI) - Body ground
- I4-8 (+S) - Body ground
Tool setting
5 V/DIV., 20 ms./DIV.
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.
Waveform 2:
Item
Condition
Tester connection
I5-23 (FV) - Body ground
Tool setting
2.5 V/DIV., 20 ms./DIV.
Condition
Ignition switch ON
Specified Condition
4.5 to 5.5 V
- Waveform 3:
Item
Condition
*1: for AWD Tester connection
- I5-7 (FR) - I5-25 (FE&B)
- I5-24 (FR2) - I5-25 (FE&B)*1
Tool setting
2.5 V/DIV., 20 ms./DIV.
Condition
Ignition switch ON, fuel level full → low (fuel level warning light on)
HINT:
(A) varies depending on the fuel level.
- Fuel level full: 4.2 to 4.6 V
- Fuel level low (fuel level warning light on): 0.3 to 0.7 V
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Meter / Gauge System
DTC No. Detection Item
Link B132187
Lost Communication with EMV Missing Message
B150013 Fuel Sender Circuit
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT SPEEDOMETER
NOTICE:
The combination meter assembly receives the vehicle speed signal from the skid control ECU (brake actuator assembly) via CAN comm
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT EGR VALVE ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
1 (EGA+) - 2 (EGA-)
20°C (68°F)
3.1 to 3.7 Ω
3
Second Row Left Side Airbag Deployment Control Circuit Short to Ground (B003011)
DESCRIPTION
DTC No. Detection Item
DTC Detection Condition Trouble Area
Warning Indicate Test Mode / Check Mode
B003011 Second Row Left Side Airbag Deployment Control Circuit Short to Ground
One of the following conditions is met:
The airbag ECU assembl
