Power Windows do not Operate at All: Procedure

1. Remove the ECU-B fuse from the engine room relay block.
   Fig 1: Identifying ECU-B And ECU-IG Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the ECU-IG fuse from the main body ECU.
3. Measure the resistance.

   Standard resistance

   Below 1Ω

4. Reinstall the fuses.

NG → REPLACE FUSE 

OK: Go to next step 

1. Remove the POWER fuse from the main body ECU.
   Fig 2: Identifying Power Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ON.
3. Measure the voltage between the POWER fuse terminal of the main body ECU and body ground.

   Standard voltage

   Tester Connections	Ignition Switch Conditions	Specified Conditions
   POWER fuse terminal (1) - Body ground	ON	11 to 14 V

4. Reinstall the POWER fuse.

NG → REPLACE MAIN BODY ECU (PWR RELAY) 

OK: Go to next step 

1. Disconnect the G1 power window regulator master switch assembly connector.
   Fig 3: Identifying Power Window Regulator Master Switch Harness Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage of the wire harness side connector.

   Standard voltage

   3 Door

   Tester Connection	Condition	Specified Condition
   G1-15 (B)- Body ground	Ignition switch ON	11 to 14 V

   Standard voltage

   Except 3 door

   Tester Connection	Condition	Specified Condition
   G1-6 (B)- Body ground	Ignition switch ON	11 to 14 V

3. Measure the resistance of the wire harness side connector.

   Standard resistance

   3 Door

   Tester Connection	Specified Condition
   G1-7 (E)- Body ground	Below 1 Ω

   Standard resistance

   Except 3 door

   Tester Connection	Specified Condition
   G1-1 (E)- Body ground	Below 1 Ω

4. Reconnect the G1 power window regulator master switch assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY