Terminals Of Ecu

CHECK POWER WINDOW REGULATOR MASTER SWITCH (DRIVER DOOR ECU)
1. Disconnect the P22 switch connector.
2. Check the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
  
  Fig 2: Checking Power Window Regulator Master Switch (Driver Door ECU) (Voltage And Resistance)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reconnect the P22 switch connector and reset the power window motor (Refer to the pre-check, step 16.).
4. Check the voltage of each terminal of the connector.
  Standard:
  
  If the result is not as specified, the master switch (door ECU) may have a malfunction.
  
  Fig 3: Checking Power Window Regulator Master Switch (Driver Door ECU) (Voltage)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER WINDOW REGULATOR SWITCH (PASSENGER DOOR ECU)
1. Disconnect the P19 switch connector.
2. Check the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
  
  Fig 5: Checking Power Window Regulator Switch (Passenger Door ECU) (Voltage And Resistance)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reconnect the P19 switch connector and reset the power window motor (Refer to the pre-check, step 16) .
4. Check the voltage of each terminal of the connector.
  Standard:
  
  If the result is not as specified, the regulator switch (door ECU) may have a malfunction.
  
  Fig 6: Checking Power Window Regulator Switch (Passenger Door ECU) (Voltage)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER WINDOW REGULATOR SWITCH (REAR LH DOOR ECU)
1. Disconnect the P20 switch connector.
2. Check the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  HINT:
  
  *: Terminal SEL2 is used to distinguish between the front passenger side regulator switch, rear LH regulator switch and rear RH regulator switch. To distinguish between them, terminals SEL1 and SEL2 for the front passenger side regulator switch are not grounded; the positions of terminals SEL1 and SEL2 are different between the rear regulator switches LH and RH.
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
  
  Fig 8: Checking Power Window Regulator Switch (Rear LH Door ECU) (Voltage And Resistance)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reconnect the P20 switch connector and reset the power window motor (Refer to the pre-check, step 16) .
4. Check the voltage of each terminal of the connector.
  Standard:
  
  If the result is not as specified, the regulator switch (door ECU) may have a malfunction.
  
  Fig 9: Checking Power Window Regulator Switch (Rear LH Door ECU) (Voltage)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK POWER WINDOW REGULATOR SWITCH (REAR RH DOOR ECU)
1. Disconnect the P21 switch connector.
  
  Fig 10: Disconnecting P21 Switch Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  HINT:
  
  *: Terminal SEL1 is used to distinguish between the front passenger side regulator switch, rear LH regulator switch and rear RH regulator switch. To distinguish between them, terminals SEL1 and SEL2 for the front passenger side regulator switch are not grounded; the positions of terminals SEL1 and SEL2 are different between the rear regulator switches LH and RH.
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
  
  Fig 11: Checking Power Window Regulator Switch (Rear RH Door ECU) (Voltage And Resistance)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reconnect the P21 switch connector and reset the power window motor (Refer to the pre-check, step 16).
4. Check the voltage of each terminal of the connector.
  Standard:
  
  If the result is not as specified, the regulator switch (door ECU) may have a malfunction.
Fig 12: Checking Power Window Regulator Switch (Rear RH Door ECU) (Voltage) (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 13: Checking Power Window Regulator Switch (Rear RH Door ECU) (Voltage) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)

Disconnect the B4, B5 and B6 ECU connectors.
Disconnect the 1A, 1D, 1F and 1M J/B connectors.

Fig 14: Checking Multiplex Network Body ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Check the voltage and resistance between each terminal of the wire harness side connectors and body ground.
Standard:

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

Fig 15: Checking Instrument Panel J/B Assy (Multiplex Network Body ECU) (Voltage And Resistance)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Reconnect the B4, B5 and B6 ECU connectors.
Reconnect the 1A, 1D, 1F and 1M J/B connectors.

Check the voltage between each terminal of the connector and the body ground.

Standard:

MULTIPLEX NETWORK BODY ECU (VOLTAGE)

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
KSW (B4-21) - Body ground	B - Body ground	Key unlock warning switch input	No key in ignition key cylinder -> Key inserted	10 to 14 -> V

If the result is not as specified, the J/B assy (body ECU) may have a malfunction.