Replace Main Body Ecu

Only Driver Door LOCK / UNLOCK Functions do not Operate

DESCRIPTION

The main body ECU receives lock/unlock switch signals and activates the door lock motor accordingly. WIRING DIAGRAM

Main Body Ecu Assembly

INSPECTION PROCEDURE

INSPECT FRONT DOOR LOCK ASSEMBLY LH

(a) Apply the battery voltage to the door lock motor and check the operation of the door lock motor. OK

Measurement Condition

Specified Condition

Battery positive (+) ^ Terminal 4 Battery negative(-) ^ Terminal 1

Lock

Battery positive (+) ^ Terminal 1 Battery negative(-) ^ Terminal 4

REPLACE FRONT DOOR LOCK ASSEMBLY LH

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR LOCK ASSEMBLY LH)

Wire Harness Side:

Main Body ECU Connector

ACTD

fl

n

1

, 2

3

4 5

S|7

S 9

10

11

12

UJ i-i

8 19

Front View

Main Body ECU Connector

^-^

n

hd

n

(

1

2

3

4

5

6

7

17

18

10

11

12

13

14

15

16

Front View

Front View

Front Door Lock Assembly LH Connector UL.jf

Front Door Lock Assembly LH Connector UL.jf

1

2

3

, I

6

7

8

9

Front View b123825e04

(a) Disconnect the D33 and 4H main body ECU connectors.

(b) Disconnect the G5 door lock connector.

(c) Measure the resistance. Standard resistance

Tester Connection

Specified Condition

4H-17 (ACT+) - G5-4 (L)

Below 1 Q

D33-2 (ACTD) - G5-1 (UL)

Below 1 Q

(d) Reconnect the main body ECU connectors.

(e) Reconnect the door lock connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

Was this article helpful?

0 0
Simple Car Care Tips and Advice

Simple Car Care Tips and Advice

Put an End to All Your Car Troubles. Does Your Car Break Down Often? Are You Spending More On Fuel Than You Thought You Would? Is Maintaining Your Car Eating Into Your Budget? Make Your Car Last Longer with Some Simple Do It Yourself Tips.

Get My Free Ebook


Responses

  • stewart
    How to replace vitz 2006 ecu?
    8 years ago
  • june
    Where is the body ecu located on a 2007 Toyota Avalon?
    3 years ago

Post a comment