Toyota Tundra Service Manual: All Power Windows does not Operate with Door Key Cylinder

DESCRIPTION

When the driver door key cylinder (key linked switch) is turned, the following occurs: 1) the door lock motor receives the signal; 2) the main body ECU (multiplex network body ECU) sends the signal to the power window regulator motors; and 3) the power window motors are activated.

PROCEDURE

1.

CHECK LIN COMMUNICATION SYSTEM

(a) Check for LIN communication system DTCs related to the power window control system.

Click here

OK:

LIN communication system DTCs are not output.

NG

GO TO LIN COMMUNICATION SYSTEM

OK

2.

CHECK FOR DTC (B2312)

(a) Check if DTC B2312 is output (See page ).

OK:

DTC B2312 is not output.

NG

GO TO DTC (B2312)

OK

3.

READ VALUE USING TECHSTREAM (DOOR LOCK SWITCH)

(a) Use the Data List to check if the door lock switch is functioning properly.

Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Door Key SW-Lock

Door key linked lock switch signal / ON or OFF

ON: Driver side door key cylinder is turned to lock position

OFF: Driver side door key cylinder is not turned

-

Door Key SW-Unlock

Door key linked unlock switch signal / ON or OFF

ON: Driver side door key cylinder is turned to unlock position

OFF: Driver side door key cylinder is not turned

-

OK:

On the Techstream screen, each item changes between ON and OFF according to above chart.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

4.

CHECK POWER WINDOW MANUAL FUNCTION

(a) Check that the manual UP/DOWN function using the master switch can operate the front door power window LH and RH (See page ).

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

    Power Window Control System(w/ Jam Protection Function)

    Power Window Motor Malfunction (B2311)

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