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 |
