Toyota Celica 2005 Repair Manual page 631

DI−432
TYPICAL ENABLING CONDITION
Item
The monitor will run whenever this DTC is
not present
Time after following conditions are met:
Engine coolant temperature
Engine RPM
Vehicle speed
Idle
Time after engine start
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
Front heated oxygen sensor voltage
COMPONENT OPERATING RANGE
Parameter
Front heated oxygen sensor voltage in the normal condition
WIRING DIAGRAM
Refer to DTC P0130 on page DI−411.
INSPECTION PROCEDURE
HINT:
Hand−held tester only:
To determine the trouble area is possible by performing "A/F CONTROL" ACTIVE TEST (heated oxygen
sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand−held tester (A/F CONTROL).
HINT:
"A/F CONTROL" is the ACTIVE TEST which changes the injection volume to −12.5 % or +25 %.
(1) Connect the hand−held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 90 seconds.
(4) Select the item "DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL.
(5) Perform "A/F CONTROL" with the engine idling (press the right or left button).
RESULT:
Heated oxygen sensor reacts in accordance with increase and decrease of the injection volume
+25 % → rich output: More than 0.5 V,
−12.5 % → lean output: Less than 0.4 V
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
Minimum
50 sec.
40_C (104°F)
1,400 rpm
40 km/h (25 mph)
180 sec.
630
Specification
See page DI−295
OFF
Threshold
Less than 0.45 V
Standard value
0 to 1 V
Maximum
−
−
−
−
−