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:
On-vehicle inspection
1. INSPECT COOLING SYSTEM FOR LEAKS
(a) Remove the radiator cap.
CAUTION:
Do not remove the radiator cap while the engine and radiator
are still hot. Pressurized, hot engine coolant and steam
may be released and cause serious burns.
(b) Fill the radiator with coolant and attach a radiator ...
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