Terminals Of Ecu

NOTE:

CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY

Fig 1: Identifying Power Window Regulator Master Switch Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the D12 master switch connector and check the voltage and continuity of each terminal of the wire harness side connector.

Standard:

CHECKING VOLTAGE AND CONTINUITY OF EACH TERMINAL

Symbols (Terminal No.)

Wiring color

Condition

Specified condition

BW⁽¹⁾, B⁽²⁾ (D12-7) <--> Body ground

L-W <--> -

Constant

10 - 14 V

E (D12-1) <--> Body ground

W-B <--> -

Constant

Continuity

SIG (D-11) <--> Body ground

B-R <--> -

Ignition switch turned to ON from OFF

0 V --> 14 V

⁽¹⁾	w/ Jam Protection

⁽²⁾	w/o Jam Protection

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the D12 master switch connector, and check the voltage of each terminal of the connector.
Standard:

Fig 2: Voltage Checking Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, the master switch may be defective.
Check the illumination.
1. When the ignition switch is turned to ON from OFF with the connector connected, check that the illumination (LED) AUTO will light up.