TERMINALS OF ECU
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
*A |
Main Body ECU (Multiplex Network Body ECU) with 2 Connectors |
- |
- |
*1 |
Main Body ECU (Multiplex Network Body ECU) |
- |
- |
*a |
2 Connectors |
- |
- |
*A |
Main Body ECU (Multiplex Network Body ECU) with 1 Connector |
- |
- |
*1 |
Main Body ECU (Multiplex Network Body ECU) |
- |
- |
*a |
1 Connector |
- |
- |
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(b) Reconnect the instrument panel junction block assembly connectors.
(c) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
MB-11 (GND1) - Body ground |
- |
Ground |
Always |
Below 1 Ω |
MB-31 (BECU) - Body ground |
- |
Battery power supply |
Always |
11 to 14 V |
MB-30 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
MB-30 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch off |
Below 1 V |
MB-32 (IG) - Body ground |
- |
IG power supply |
Ignition switch ON |
11 to 14 V |
MB-32 (IG) - Body ground |
- |
IG power supply |
Ignition switch off |
Below 1 V |
(d) Install the main body ECU (multiplex network body ECU) to instrument panel junction block assembly.
Click here
(e) Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F15-6 (FLCY) - Body ground |
R - Body ground |
Front door courtesy light switch (for LH) input |
Front door LH open |
Below 1 V |
F15-6 (FLCY) - Body ground |
R - Body ground |
Front door courtesy light switch (for LH) input |
Front door LH closed |
Pulse generation |
3A-41 (KSW) - Body ground |
V - Body ground |
Key unlock warning switch input |
No key in ignition key cylinder |
Pulse generation |
3A-41 (KSW) - Body ground |
V - Body ground |
Key unlock warning switch input |
Key in ignition key cylinder |
Below 1 V |
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ILLUSTRATION
*A
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*B
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*1
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*2
TONNEAU COVER ASSEMBLY
ILLUSTRATION
*A
for Type A
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ILLUSTRATION
*1
FRONT AXLE HUB ASSEMBLY RH
- FRONT SPEED SENSOR ROTOR RH
*2
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*3
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*4
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