Toyota Camry owners & service manuals

Toyota Camry: Terminals Of Ecu

TERMINALS OF ECU

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K140-1 (+B) - K140-20 (E)

B - W-B

Power source (+B)

Always

11 to 14 V

K140-3 (SIG-) - K140-20 (E)

GR - W-B

Ground

Always

Below 1 V

K140-4 (IND1) - K140-20 (E)

P - W-B

Manual (SOS) switch red indicator illumination signal

For 2 seconds after turning the engine switch on (IG)

1 to 8.5 V

Engine switch off

Below 1 V

K140-5 (MCVD) - K140-20 (E)

B - W-B

Telephone microphone assembly power supply

Engine switch on (ACC)

4 to 6 V

Engine switch off

Below 1 V

K140-6 (MCI+) - K140-20 (E)

W - W-B

Receive microphone voice signal

Voice being input to telephone microphone assembly

A waveform synchronized with microphone voice signal is input

K140-7 (MCI-) - K140-20 (E)

R - W-B

Receive microphone voice signal

Always

Below 1 V

K140-13 (GSW) - K140-20 (E)

W - W-B

Collision detection signal

Engine switch on (IG)

Pulse generation (Refer to waveform1)

K140-19 (IG2) - K140-20 (E)

LG - W-B

Power source (IG)

Engine switch on (IG)

11 to 14 V

Engine switch off

Below 1 V

K140-20 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K140-21 (SIG1) - K140-3 (SIG-)

B - G

Manual (SOS) switch button condition signal

Manual (SOS) switch not pressed

1.3 to 1.9 V

Manual (SOS) switch pressed

0.5 to 0.8 V

K140-22 (IND2) - K140-20 (E)

LG - W-B

Manual (SOS) switch green indicator illumination signal

For 2 seconds after turning the engine switch on (IG)

1 to 8.5 V

Engine switch off

Below 1 V

K140-23 (SGND) - K140-20 (E)

Shielded - W-B

Shield ground

Always

Below 1 Ω

K140-25 (CANP)

R

CAN communication signal

-

-

K140-26 (CANN)

W

CAN communication signal

-

-

CHECK DCM (TELEMATICS TRANSCEIVER)

(a) Oscilloscope waveform:

(1) Waveform 1

Item

Condition

Tester connection

K140-13 (GSW) - K140-20 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Engine switch on (IG)

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

w/o Navigation System: Click here

w/ Navigation System: Click here

    READ NEXT:

     Dtc Check / Clear

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     Diagnostic Trouble Code Chart

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