Sidekick JS 2D 2WD L4-1.6L (1998)
7) Start engine and check that voltage is lower than 5V and it rises as engine speed increases.
(Reference data: 1.7 - 2.0 V at specified idle speed)
If check result is not as specified above, cause may lie in wire harness, coupler connection, MAF sensor or ECM (PCM).