Toyota Camry (XV70): Terminals Of Ecu
TERMINALS OF ECU
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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(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 connectors 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 the instrument panel junction block assembly.
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(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 |
|---|---|---|---|---|
|
K53-4 (TSW) - Body ground |
LG - Body ground |
Luggage compartment door opening switch signal |
Luggage compartment door opening switch on |
Below 1 V |
|
Ignition switch off, all doors closed and luggage compartment door opening switch off |
Pulse generation | |||
|
3D-34 (LGCY) - Body ground |
LA-GR - Body ground |
Luggage compartment door courtesy light switch assembly input signal |
Luggage compartment door open |
Below 1 V |
|
Luggage compartment door closed |
11 to 14 V | |||
|
3D-20 (TR+) - Body ground |
LA-G - Body ground |
Luggage compartment door open relay output signal |
Luggage compartment door opening switch on |
11 to 14 V |
|
Luggage compartment door opening switch off |
Below 1 V |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)
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SEE MORE:
Panoramic moon roof
Use the overhead switches to operate the panoramic moon roof
and electronic sunshade.
Opening and closing the electronic sunshade
Opens the electronic sunshade
Slide and hold the switch
backward. The electronic sunshade
will fully open automatically.*
Closes the electronic sunshade
Diameter of the Tire is not Uniform (C1337)
DESCRIPTION The 4WD ECU assembly outputs this DTC if a difference in tire size is detected.
DTC No. Detection Item
DTC Detection Condition Trouble Area
C1337 Diameter of the Tire is not Uniform
When the following continues for 36 seconds or more: At a vehicle speed of
