Terminals Of Ecu

INSPECT INTEGRATION RELAY

Fig 1: Identifying Integration Relay Connector Terminals (Wire Harness Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the connector from the integration relay.
2. Check the continuity between each terminal of the disconnected connector and the body ground, as shown in Fig 1 and Fig 2.
  Standard:
  
  Fig 2: Integration Relay Connector Terminal Specifications (Wire Harness Side Connector Disconnected)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the vehicle's side may malfunction.
3. Reconnect the connector and check the voltage between each terminal and the body ground, as shown in Fig 1 and Fig 3.
  Standard:
  
  Fig 3: Integration Relay Connector Terminal Specifications (Wire Harness Side Connector Connected)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the integration relay may malfunction.
INSPECT INSTRUMENTAL PANEL J/B (INTEGRATION RELAY)

Fig 4: Identifying Instrumental Panel J/B Integration Relay & Related Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the connectors IA, IB, ID, IF, IH and IJ of the instrument panel J/B.
2. Check the continuity between each terminal of the disconnected connectors and the body ground, as shown in Fig 4 and Fig 5.
  Standard:
  
  Fig 5: Instrumental Panel J/B Connectors IA, IB, ID, IF, IH & IJ Terminal Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the vehicle's side may malfunction.
3. Reconnect the connectors and check the voltage between each terminal and the body ground, as shown in Fig 4 and Fig 6.
  Standard:
  
  Fig 6: Terminal Symbol Specified Condition Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the integration relay or instrument panel J/B assembly may malfunction.