TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) (See page
).
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A-30 (BECU) - Body ground |
- |
Battery power supply |
Always |
11 to 14 V |
A-31 (ALTB) - Body ground |
- |
Battery power supply |
Always |
11 to 14 V |
A-32 (IG) - Body ground |
- |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
A-32 (IG) - Body ground |
- |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
A-29 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
A-29 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch off |
Below 1 V |
A-11 (GND1) - Body ground |
- |
Ground |
Always |
Below 1 Ω |
F10-3 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
F9-17 (KSW) - Body ground |
B - Body ground |
Unlock warning switch input |
No key in ignition key cylinder |
10 kΩ or higher |
F9-17 (KSW) - Body ground |
B - Body ground |
Unlock warning switch input |
Key inserted in ignition key cylinder |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Install the main body ECU (multiplex network body ECU).
(d) Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
2F-27 (FLCY) - Body ground |
R - Body ground |
Front door LH courtesy switch input |
Front door LH open |
Below 1 V |
2F-27 (FLCY) - Body ground |
R - Body ground |
Front door LH courtesy switch input |
Front door LH closed |
11 to 14 V |
If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.
ID Code Box Power Source Circuit
DESCRIPTION
This circuit provides power to operate the ID code box.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
inspection procedure.
PROCEDURE
1.
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Rear seats
Vehicles without third row seats
Rear seat
Pull up the seatback angle adjustment lever until the lock is released.
Vehicles with third row seats
Second row seats
1. Seat position adjustment lever
2. Seatback angle adjustment lever
Third row seats
...