Toyota Highlander Service Manual: Location

Toyota Highlander Service Manual / Emission control / Emission control system (3MZ-FE) / Location

Location

SYSTEM DIAGRAM

The emission control system is determined by the ECM based on signals from various sensors.

SYSTEM DIAGRAM

Emission control system (3MZ-FE)

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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:

Inspection
1. INSPECT MASS AIR FLOW METER (a) Check the output voltage. Apply battery voltage across terminals 1 (+B) and 2 (E2G). Connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G. Blow air into the Mass Air Flow (MAF) meter, ...