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 |
|---|---|---|---|---|
|
K52-15 (FUSW) - Body ground |
G - Body ground |
Fuel lid opener switch signal |
Fuel lid opener switch pushed |
Below 1 V |
|
Fuel lid opener switch not pushed |
11 to 14 V | |||
|
K51-24 (FUEL) - Body ground |
G - Body ground | Fuel lid open request signal |
| 11 to 14 V → Below 1 V → 11 to 14 V |
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a
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Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION
Detection Item Symptom
Trouble Area Air Conditioning Amplifier Communication Stop Mode
Any of the following conditions are met:
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (a) Before cleaning, or after cleaning the throttle body with motor assembly and installing it to the vehicle, turn the engine switch on (IG) without operating the accelerator pedal sensor assembly.
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