Highlander 4WD V6-3.0L (1MZ-FE) (2003)
1. Disconnect the connector.
Terminals Of ECU/pinouts
2. Check the voltage or continuity of each terminal of the vehicle's side connector.
6. ECM
Inspect the ECM operation.
Terminals Of ECU/pinouts
Check the voltage or continuity of each terminal of the vehicle's side connectors.
NOTE:
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The Inspection should be started from the back side of the connector with the ECM connector being connected.
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Before the measurement, check the power source voltage (10 - 14 V when IG ON) and body ground (5 ohms or less between each ground
terminal and the engine body, when IG OFF).