Toyota 2GR-FE Manual page 350

ES–194
3.3 V
ES
1 V
0 V
OK
CHECK AND REPAIR EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (INJECTOR, FUEL
PRESSURE, GAS LEAKAGE FROM EXHAUST SYSTEM)
14
CHECK FOR EXHAUST GAS LEAKS
OK
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
+12 %
Malfunction
NG
OK:
No gas leakage.
NG
Injection Volume
-12 %
Normal
HO2 Sensor Output
REPLACE AIR FUEL RATIO SENSOR (See
page EC-19)
REPAIR OR REPLACE EXHAUST GAS
LEAKAGE POINT
A/F Sensor Output
Malfunction
A087979E16