Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK 4WD ECU ASSEMBLY
(a) Measure the voltage and resistance of the connector.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
O201-6 (CANH) - O201-5 (CANL) |
CAN communication line |
Cable disconnected from negative (-) auxiliary battery terminal |
54 to 69 Ω |
|
O201-4 (GND) - Body ground |
Ground |
Always |
Below 1 Ω |
|
O201-3 (IG1) - O201-4 (GND) |
Power source voltage |
Ignition switch ON |
11 to 14 V |
|
O201-2 (SLC+) - O201-1 (SLC-) |
4WD linear solenoid signal |
D position, engine idling |
Pulse generation (See waveform 1) |
If the result is not as specified, the 4WD ECU assembly may have a malfunction.
(b) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference)|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
O201-2 (SLC+) - O201-1 (SLC-) |
|
Tester Range |
2 V/DIV., 1 msec./DIV. |
|
Condition |
D position, Idling |
READ NEXT:
Freeze Frame Data
FREEZE FRAME DATA
FREEZE FRAME DATA
(a) When a DTC is stored, the 4WD ECU assembly stores the current vehicle state
as Freeze Frame Data.
HINT:
Freeze Frame Data at the time a DTC is stored:
Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE CHART
Dynamic Torque Control AWD System
DTC No.
Trouble Area
AWD Warning message
Fail-safe Operation
Memory
Data List / Active Test
DATA LIST / ACTIVE TEST
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
SEE MORE:
Inspection
INSPECTION
PROCEDURE
1. INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)
(a) Connect the battery to the transmission revolution sensor (NOUT) as shown
in the illustration.
*1
Battery
*2
Ammeter
*a
Component without harness
Insufficient Coolant Temperature for Closed Loop Fuel Control (P012500)
DESCRIPTION Refer to DTC P011511. Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Note
P012500 Insufficient Coolant Temperature for Closed Loop Fuel Control
The engine coolant temperature does not reach the closed loop enabling tem
