Toyota 1 MZ–FE Manual page 573

Check A/C idle–up VSV.
Check for open and short in harness and connector between EFI
main relay and ECM (See page IN–31).
Check and replace ECM (See page IN–36).
1MZ–FE ENGINE – CIRCUIT INSPECTION
(1) Remove A/C idle–up VSV.
(2) Disconnect A/C idle–up VSV connector.
(1) Measure resistance between terminals.
(2) Measure resistance between each terminal
and the body.
(1) Resistance: 22 – 42 at 202C (682F)
(2) Resistance: 1 M
Check operation of A/C idle–up VSV when battery
positive voltage is applied to the terminals of A/C
idle–up VSV connector or not.
Battery positive voltage is applied:
The air from pipe E is flowing out through pipe F.
Battery positive voltage is not applied:
The air from pipe E is not flowing out through
pipe F.
Replace A/C idle–up VSV.
Repair or replace harness or connector.
EG2–573
or higher