Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
.png)
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
(b) Reconnect the power distribution box assembly connectors.
(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 the 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-5 (FRCY) - Body ground |
Front door courtesy light switch (for RH) input |
Front door RH open | Below 1 V |
|
Front door RH closed |
11 to 14 V | ||
|
8F-3 (FLCY) - Body ground |
Front door courtesy light switch (for LH) input |
Front door LH open | Below 1 V |
|
Front door LH closed |
11 to 14 V | ||
|
8F-1 (RCTY) - Body ground |
Rear door courtesy light switch (for RH) input |
Rear door RH open | Below 1 V |
|
Rear door RH closed | Pulse generation | ||
|
8F-28 (LCTY) - Body ground |
Rear door courtesy light switch (for LH) input |
Rear door LH open | Below 1 V |
|
Rear door LH closed | Pulse generation | ||
|
8F-2 (BCTY) - Body ground |
Back door courtesy light switch input |
Back door closed | Below 1 V |
|
Back door open | 11 to 14 V | ||
|
8F-42 (TR+) - Body ground |
Back door lock motor drive output |
Back door closed → open |
Below 1 V → 11 to 14 V → Below 1 V |
|
8F-36 (ACT-) - Body ground |
Door lock motor unlock drive output |
Door control switch or driver door key cylinder off → on (unlock) |
Below 1 V → 11 to 14 V → Below 1 V |
|
8F-37 (ACT-) - Body ground | |||
|
8F-40 (ACT+) - Body ground |
Door lock motor lock drive output |
Door control switch or driver door key cylinder off → on (lock) |
Below 1 V → 11 to 14 V → Below 1 V |
|
8F-41 (ACT+) - Body ground | |||
|
I85-3 (LSFR) - Body ground |
Front door RH unlock detection switch input |
Front door RH unlocked |
Below 1 V |
|
Front door RH locked |
Pulse generation | ||
|
I85-9 (LSFL) - Body ground |
Front door LH unlock detection switch input |
Front door LH unlocked |
Below 1 V |
|
Front door LH locked |
Pulse generation | ||
|
I86-23 (LSWR) - Body ground |
Rear door RH unlock detection switch input |
Rear door RH unlocked |
Below 1 V |
|
Rear door RH locked | Pulse generation | ||
|
I85-10 (LSWL) - Body ground |
Rear door LH unlock detection switch input |
Rear door LH unlocked |
Below 1 V |
|
Rear door LH locked | Pulse generation | ||
|
I85-28 (L2) - Body ground |
Driver door key-linked lock input |
Driver door key cylinder turned to lock |
Below 1 V |
|
Driver door key cylinder not turned |
Pulse generation | ||
|
I85-4 (UL3) - Body ground |
Driver door key-linked unlock input |
Driver door key cylinder turned to unlock |
Below 1 V |
|
Driver door key cylinder not turned |
Pulse generation | ||
|
8C-43 (GSW) - Body ground |
Airbag sensor signal (collision detection signal) |
Ignition switch ON with airbag sensor assembly connector disconnected |
4.3 to 5.5 V |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)
(a) Disconnect the I222 certification ECU (smart key ECU assembly) connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I222-29 (E) - Body ground |
Ground | Always |
Below 1 Ω |
|
I222-6 (+B) - Body ground |
Auxiliary battery power supply |
Ignition switch off | 11 to 14 V |
(c) Reconnect the O200 certification ECU (smart key ECU assembly) connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Tester Connection | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
O200-16 (TSW5) - Body ground |
Back door opener switch input |
Back door opener switch assembly (open switch) off → on |
Below 1 V → Pulse generation |
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT:
Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This no
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Power Door Lock Control System
DTC No. Detection Item
Link B124300
Impact Detection Sensor Circuit Malfunction
Impact Detection Sensor Circuit Malfunction (B124300)
DESCRIPTION If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B1243
SEE MORE:
Engine Oil Pressure Sensor/Switch "A" Circuit Short to Battery (P052012)
DESCRIPTION
Variable oil pump control uses the oil pressure control valve assembly, oil pressure and temperature sensor and ECM to optimize the oil pressure and oil volume required by each component to reduce friction by monitoring the engine temperature and engine speed. The oil pressure sensor
Steering Angle Sensor Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Steering Angle Sensor Communication Stop Mode
Communication stop for "Spiral cable (Steering Angle Sensor)" is indicated
on the "Communication Bus Check" screen of th
