Terminals Of Ecu

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

Fig 1: Checking Instrument Panel J/B Assy (Multiplex Network Body ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the B6, B7 and B8 ECU connectors.
2. Disconnect the 2D, 2F and 2M J/B connectors.
3. Measure the voltage and resistance of the wire harness side connectors.
  Standard:
  
  Fig 2: Measuring Voltage & Resistance Of Wire Harness Side Connectors Specification Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
4. Reconnect the B6, B7 and B8 ECU connectors.
5. Reconnect the 2D, 2F and 2M J/B connectors.
6. Measure the voltage of the connector.
Standard:

Fig 3: Measuring Voltage Of Connector Specification Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, the J/B assy (multiplex network body ECU) may have a malfunction.
CHECK CONVERTIBLE ROOF CONTROL ECU

Fig 4: Identifying Convertible Roof Control ECU Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the C17, C18 and C19 ECU connectors.
2. Measure the voltage and resistance of the wire harness side connectors.
  Standard:
  
  Fig 5: Measuring Voltage & Resistance Of Wire Harness Side Connectors Specification Table (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 6: Measuring Voltage & Resistance Of Wire Harness Side Connectors Specification Table (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
3. Reconnect the C17, C18 and C19 ECU connectors.
4. Measure the voltage of the connectors.
Standard:

Fig 7: Measuring Voltage Of Connectors Specification Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, the ECU may have a malfunction.