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:
Engine
ON-VEHICLE INSPECTION
HINT:
Inspect these items when the engine is cold.
1. REPLACE TIMING BELT (See page 2AZ-FE: 14-68 , 3MZ-FE: 14-206 )
2. INSPECT DRIVE BELT (See page 2AZ-FE: 14-5 , 3MZ-FE: 14-125 )
3. REPLACE SPARK PLUGS (See page 2AZ-FE: 18-1 , 3MZ-FE: 18-7 )
4. Canada:
INSPECT AIR FILT ...
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