Diagnostic Chart - Toyota 1 MZ–FE Manual

EG2–528

DIAGNOSTIC CHART

TOYOTA hand–held tester
Connect the TOYOTA hand–held tester and read
value of EGR gas temperature.
Check for short in harness and ECM.
Check for short in harness or ECM.
Check and replace ECM.
Check the VSV for EG R.
Check operation of the VSV for EG R.
Check for open in harness and connector between J/B
No.2 and ECM.
1MZ–FE ENGINE – CIRCUIT INSPECTION
G o to step
Replace EGR gas temp. sensor.
Repair or replace harness or connector.
Check EGR valve.
Replace VSV for EG R.