Toyota Highlander Service Manual: How to troubleshoot ecu controlled systems

Vehicle lift and support locations

1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP THE VEHICLE  The vehicle must be unloaded before jacking up the vehicle. Never jack up/lift up a heavily loaded vehicle.  When remo ...

General information

A large number of ECU controlled systems are used in the HIGHLANDER. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troub ...

More about Toyota Highlander:

Engine (3MZ-FE)
INSPECTION 1. INSPECT ENGINE COOLANT (See page 16-20 ) 2. INSPECT ENGINE OIL 3. INSPECT BATTERY (See page 19-36 ) 4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSY 5. INSPECT SPARK PLUG (See page 18-9 ) 6. INSPECT V-RIBBED BELT (a) Using a belt tension gauge, check the belt tension. Belt te ...