Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
(b) Reconnect the power distribution box assembly connector.
(c) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connectors connected.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
MB-13 (GND1) - Body ground |
Ground | Always |
Below 1 Ω |
|
MB-14 (GND2) - Body ground |
Ground | Always |
Below 1 Ω |
|
MB-26 (BECU) - Body ground |
Auxiliary battery power supply |
Ignition switch off | 11 to 14 V |
|
MB-27 (IGR) - Body ground |
IG power supply | Ignition switch ON |
11 to 14 V |
(d) Install the main body ECU (multiplex network body ECU) to power distribution box assembly.
(e) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
8F-3 (FLCY) - Body ground |
Front door courtesy light switch (LH) input |
Front door LH open | Below 1 V |
|
Front door LH closed |
11 to 14 V | ||
|
I85-16 (KSW) - Body ground |
Un-lock warning switch input |
No key in ignition key cylinder |
11 to 14 V |
|
Key in ignition key cylinder |
Below 1 V |
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the following table, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whethe
Key Reminder Buzzer does not Sound
DESCRIPTION The key reminder warning buzzer sounds when the driver door is opened while the ignition switch is off or ACC. The key reminder warning buzzer is activated when the main body ECU (multiple
SEE MORE:
Removal
REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 TAIL EXHAUST PIPE ASSEMBLY
17430
- -
2 FRONT FLOOR CENTER BRACE
57533B -
- -
3 NO. 2 AIR FUEL RATIO SENSOR
89467B
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU Receiving ECU
Signal Communication Method
Multiplex Network Master Switch Assembly
Power Window Regulator Motor Assembly (for Driver Door)
Power window auto up and down signal
LIN
Power Window Regulat
