Toyota Highlander Service Manual: Location
SYSTEM DIAGRAM
The emission control system is determined by the ECM based on signals from various sensors.
On-vehicle inspection
1. INSPECT AIR-FUEL RATIO COMPENSATION SYSTEM
(a) Measure the voltage between the terminals of the ECM
connectors.
Standard:
NOTICE:
Connect test leads to the connector's backside. The co ...
More about Toyota Highlander:
Data list/active test
1. CHECK USING INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Select the DATA LIST mode on the intelligent tester.
Sliding roof ECU:
(c) The active test will indicate if the part is normal or malfunctioning.
Sliding roof ECU:
...
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