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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Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U023A)
DESCRIPTION The power steering ECU (rack and pinion power steering gear assembly) receives signals from the ECM, steering sensor, skid control ECU (brake actuator assembly) and forward recognition camera via CAN communication.
DTC No. Detection Item
DTC Detection Condition
Troub
Installation
INSTALLATION PROCEDURE 1. INSTALL VVT SENSOR (for Exhaust Side of Bank 2)
(a) Apply a light coat of engine oil to the O-ring of the VVT sensor. NOTICE:
If reusing the VVT sensor, be sure to inspect the O-ring. (b) Clean the bolt and bolt hole.
(c) Apply adhesive to 2 or 3 threads at the en
