Toyota Highlander Service Manual: How to troubleshoot ecu controlled systems

Toyota Highlander Service Manual / Introduction / How to troubleshoot ecu controlled systems

General information
How to proceed with troubleshooting
Electronic circuit inspection procedure

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:

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 3 (VG), and negative (-) tester probe to terminal 2 (E2G). Blow air into the Mass Air Flow (M ...