Toyota 1 MZ–FE Manual page 555

Check voltage between terminal 8 of igniter connector (I15) and
body ground.
Check for open and short in harness and connector between
terminal IGF of ECM and igniter (See page IN–31).
Check and replace ECM (See page IN–36).
1MZ–FE ENGINE – CIRCUIT INSPECTION
Turn ignition switch ON.
Measure voltage between terminal 8 of igniter
connector (I15) and body ground.
Voltage: 4.5 – 5.5 V
Go to step (7)
Repair or replace harness or connector.
EG2–555