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:
Problem symptoms table
Use the table below to help determine the cause of the problem. The numbers
indicate the priority
of the possible cause of the problem. Check each part in order. If necessary,
replace these parts.
Symptom
Suspected Area
Bottoming
Vehicle (Overloaded)
...
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