Check Harness And Connector Certification Ecu Battery And Body Ground

(a) Disconnect the D39 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector. Voltage

Tester Connection

Specified Condition

D39-1 (+B1) - Body ground

10 to 14 V

(c) Measure the resistance between the specified terminals on the wire harness side connector. Resistance

Tester Connection

Specified Condition

D39-17 (E) - Body ground

Below 1 Q

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK RESISTANCE OF COMMUNICATION LINE

Combination Switch Connector Front View:

- h

1 12 3 516 7

Certification ECU Connector Front View: (D39

/

rvTffVrJ

r

1

2

3

4

5

6

7

8

9

J U

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

7|28 29|30|3l|32

33

34

35

36

37

38

39

40

MPX1 MPX2

Power Source Control ECU Connector Front View:

27 28 29 30 31 32

MPX1

(a) Disconnect the D13, D39 and D44 ECU connectors.

(b) Measure the resistance between the specified terminals on the wire harness side connector.

Resistance

Tester Connection

Specified Condition

D39-27 (MPX1) - D13-7 (MPX2)

Below 1 Q

D39-28 (MPX2) - D44-7 (MPX1)

Below 1 Q

Result

Result

Proceed to

Both are OK

A

One is OK

B

Both are NG

C

REPLACE CERTIFICATION ECU AND REPAIR OR REPLACE HARNESS OR CONNECTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE CERTIFICATION ECU

B1208

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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