Wire Color Of Ts On Obd2 For 1999 Toyota Avalon

Junction Connector (CAN J/C) 1

D41

ECM

G

C *\ CANH

33

W

CANL

34

D20 DLC3

P

CANH

6

W

CANL

14

A34 Skid Contorol ECU with VSC Acutuator

B (*1)

CANH

11

W(*1)

CANL

' \ \ 25

A40 Skid Contorol ECU with ABS Acutuator

B (*2)

CANH

\

26

W (*2)

CANL

15

/

*1 with VSC *2 without VSC

C131063E01

INSPECTION PROCEDURE

CHECK DLC3

(a) Turn the ignition switch off.

(b) Measure the resistance according to the value(s) in the table below.

Result

Tester connecti on

Condition

Specified value

Result

D20-6 (CANH) -D20-14 (CANL)

Q

A

D20-6 (CANH) -D20-14 (CANL)

ignition switch off

69 Q or more

When the measured value is 69 Q or more and a CAN communication system diagnostic trouble code is output, there may be a fault besides disconnection of the DLC3 sub bus line. For that reason, troubleshooting should be performed again from "HOW TO PROCEED WITH TROUBLESHOOTING" (See page CA-7) after repairing the trouble area.

REPAIR OR REPLACE DLC3 SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

CHECK CAN MAIN BUS LINE FOR DISCONNECTION

ECM Wire Harness View:

ECM Wire Harness View:

CANH

C129818E02

CANH

C129818E02

(a) Turn the ignition switch off.

(b) Disconnect the ECM connector (D41).

(c) Measure the resistance according to the value(s) in the table below.

Resistance

Tester Connection

Condition

Specified value

D41 -33 (CANH) - D41-34 (CANL)

Ignition switch off

108 to 132 n

REPLACE ECM

REPLACE ECM

CONNECT CONNECTOR

(a) Reconnect the ECM connector (D41) to the ECM.

NEXT

CHECK CAN MAIN BUS LINE FOR DISCONNECTION

CAN J/C Side (with Earth Terminal) Wire Harness View:

m ZEE nnn pn

(D50) Earth Terminal

(D50) Earth Terminal

G031957E07

(a) Disconnect the CAN main bus line connector (D50) from the CAN J/C A side (w/ earth terminal).

NOTICE:

• Before disconnecting the connector, make a note of where it is connected.

• Reconnect the connector to its original position.

(b) Measure the resistance according to the value(s) in the table below.

Resistance

Tester Connection

Condition

Specified value

D50-1 (CANH) - D50-2 (CANL)

Ignition switch off

108 to 132 n

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (D50-D41)

CONNECT CONNECTOR

(a) Reconnect the CAN main bus line connector (D50) to the CAN J/C Aside (without earth terminal).

NEXT

CHECK CAN MAIN BUS LINE FOR DISCONNECTION (CAN J/C)

Skid Control ECU Connector Front View:

CANH

1

2

3

4

5

6

7

8

9

10 1

1 12

13

14

15

16

17

18

19

20

21

22

23

24 2

:5 26

27

28

29

30 r

31

32

Il-II-II-

—..-.1 _

|33|34|35|36|37|38|39|40|.

-1142|43|44|45|46|

CANL

NOTICE:

For vehicles without VSC, go to step 7

(a) Turn the ignition switch off.

(b) Disconnect the skid control ECU connector (A34).

(c) Measure the resistance according to the value(s) in the table below.

Resistance

Tester Connection

Condition

Specified value

A34-11 (CANH) - A34-25 (CANL)

Ignition switch off

108 to 132 n

Go to step 8

Go to step 8

REPLACE SKID CONTROL ECU WITH ACTUATOR

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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