Toyota/Lexus: Critical Wear Areas, Vacuum Test Locations
You should keep a record of vacuum results for each valve body at each tested circuit/port location.
Nissan Frontier: Finding Failures, Faults
Nissan uses two accelerator pedal position (APP) sensors to transmit a throttle position command.
Use A Smoke Machine To Locate A Vacuum Leak
Several technicians struggle trying to find a vacuum leak. Try using a smoke machine to find a vacuum leak.