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Land Cruiser

  1. Disconnect 20-pin power window master switch connector from switch. Inspect connector on wire harness side. See POWER WINDOW MASTER SWITCH CIRCUIT TEST - CONNECTOR DISCONNECTED (LAND CRUISER)  table. See Fig 1. If circuit is not as specified, inspect circuits connected to other components.
  2. Connect 20-pin power window master switch. Inspect connector from back side of connector. See POWER WINDOW MASTER SWITCH CIRCUIT TEST - CONNECTOR CONNECTED (LAND CRUISER)  table. See Fig 1. If circuit is not as specified, inspect circuits connected to other components.
POWER WINDOW MASTER SWITCH CIRCUIT TEST - CONNECTOR DISCONNECTED (LAND CRUISER)

Connector Terminal No. To Ground Condition Result
9 Constant Continuity
1 Constant Battery Voltage
3 Ignition Switch In LOCK Position No Voltage
3 Ignition Switch In ACC Or ON Position Battery Voltage
POWER WINDOW MASTER SWITCH CIRCUIT TEST - CONNECTOR CONNECTED (LAND CRUISER)

Connector Terminal No. To Ground Condition Result
6 (1) Window Lock Switch OFF Battery Voltage
6 (1) Window Lock Switch ON No Voltage
8 (1) Master Switch OFF No Voltage
8 (1) Master Switch DOWN 9 Volts Or Greater
8 (1) Driver Door Glass Closed No Voltage
8 (1) Master Switch AUTO DOWN 9 Volts Or Greater
8 (1) Driver Door Glass Open No Voltage
10 Constant Continuity
12 Power Window Operating Approximately 5.5 Volts
13 Master Switch DOWN (Driver Door Glass Open) Less Than 1 Volt
13 Master Switch UP (Driver Door Glass Closed) 10-14 Volts
13 Master Switch OFF No Voltage
18 (1) 2.5 Volts
20 (1) Master Switch OFF No Voltage
20 (1) Master Switch DOWN 9 Volts Or Greater
20 (1) Driver Door Glass Is Closed No Voltage
20 (1) Master Switch AUTO UP 9 Volts Or Greater
20 (1) Driver Door Glass Is Open No Voltage
(1) Ignition switch in ON position.
Fig 1: Identifying Power Window Master Switch 20-Pin Harness Connector Terminals (Land Cruiser)
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