Terminals Of Ecu

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTEGRATION RELAY

Fig 1: Identifying Integration Relay Connector
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 the illustration and table.
  Standard:
  
  Fig 2: Terminal Condition Continuity Reference Chart
  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 the illustration and table.
  Standard:
  
  Fig 3: Terminal Condition Voltage Reference Chart
  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)
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 the illustration and table.
  Standard:
  
  Fig 5: Terminal Condition Continuity Reference Chart
  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 the illustration and table.
  Standard:
  
  Fig 6: Terminal Condition Voltage Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the integration relay or instrument panel J/B assembly may malfunction.