Toyota Camry (XV70): Terminals Of Ecu
TERMINALS OF ECU
CHECK WINDSHIELD WIPER MOTOR ASSEMBLY
(a) Disconnect the A31 windshield wiper motor assembly connector.
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|---|
|
A31-4 (+B) - Body ground |
SB - Body ground |
Ignition switch ON signal (Power source circuit) |
Ignition switch ON |
11 to 14 V |
|
Less than approximately 60 seconds after ignition switch turned off | ||||
|
Approximately 60 seconds after ignition switch turned off |
Below 1 V | |||
|
A31-1 (GND) - Body ground |
W-B - Body ground |
Ground | Always |
Below 1 Ω |
(c) Connect the A31 windshield wiper motor assembly connector.
HINT:
Since the A31 windshield wiper motor assembly connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
(d) 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 |
|---|---|---|---|---|
|
A31-3 (2S) - Body ground |
B - Body ground |
Windshield wiper motor assembly HI operation signal |
Windshield wiper motor assembly stopped |
11 to 14 V |
|
Windshield wiper motor assembly operating in HI |
Below 1 V | |||
|
A31-2 (LIN) - Body ground |
R - Body ground | LIN communication signal |
Ignition switch ON |
Pulse generation |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
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(a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
(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 |
|---|---|---|---|---|
|
3B-3 - Body ground |
LA - Body ground |
Ground | Always |
Below 1 Ω |
|
3C-1 - Body ground |
LG - Body ground |
Battery power supply |
Always | 11 to 14 V |
|
3F-1 - Body ground |
W - Body ground | Battery power supply |
Always | 11 to 14 V |
(c) Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
(d) 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 |
|---|---|---|---|---|
|
3C-2 - Body ground |
R - Body ground | Washer circuit IG power source |
Ignition switch ON |
11 to 14 V |
|
K51-3 (LIN3) - Body ground |
BE - Body ground |
LIN communication line |
Ignition switch ON |
Pulse generation |
|
K51-12 (FWSR) - Body ground |
L - Body ground |
WASHER Relay operation signal |
Ignition switch ON, front washer switch off |
11 to 14 V |
|
Ignition switch ON, front washer switch on |
Below 2 V | |||
|
K52-21 (WPS) - Body ground |
LG - Body ground |
WIPER Relay operation signal |
Ignition switch ON |
11 to 14 V |
|
Less than approximately 60 seconds after ignition switch turned off | ||||
|
Approximately 60 seconds after ignition switch turned off |
Below 1 V |
CHECK COMBINATION METER ASSEMBLY
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READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK FOR DTC (a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON. (c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / (desired
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a DTC is detected, the windshield wiper motor motor assembly stores the current vehicle state as Freeze Frame Data.
CHECK FREEZE FRAME DATA (a) Conn
Fail-safe Chart
FAIL-SAFE CHART PROTECTION FUNCTION (a) The windshield wiper motor assembly operates the following protection functions if it detects an abnormal condition, in order to protect the wiper and washer sy
SEE MORE:
Lost Communication With ECM/PCM "A" (U0100-U0142,U0151,U0155)
DESCRIPTION
DTC No. Detection Item
DTC Detection Condition Trouble Area
Memory U0100
Lost Communication With ECM/PCM "A"
No communication with ECM
CAN communication system
ECM
Memorized
U0131 Lost Communication With Power Steering Control Mo
Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Ground (P032511,P033011)
DESCRIPTION A flat-type knock control sensor (non-resonant type) has a structure that can detect vibrations between approximately 5 kHz and 15 kHz.
The knock control sensor is fitted onto the engine block to detect engine knocking.
The knock control sensor contains a piezoelectric element which
