Toyota Celica 2005, Repair Manual

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− DIAGNOSTICS ENGINE (1ZZ − FE)
DI − 125
2005 CELICA (RM1131U)
WIRING DIAGRAM
Refer to DTC P0130 on page DI − 112.
INSPECTION PROCEDURE
HINT:
Hand
− held tester only:
Narrowing down the trouble area is possible by performing ”A/F CONTROL” ACTIVE TEST (heated oxygen
sensor or other trouble areas can be distinguished). Perform ACTIVE TEST using hand
− held tester (A/F
CONTROL).
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 speed 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 in an idle condition (press the right or left button).
RESULT:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume
+25 %
→ rich output: More than 0.5 V,
− 12.5 % → lean output: Less than 0.4 V
NOTICE:
There is a delay of few seconds in the sensor 1 (front sensor) output, and there is about 20 seconds
delay at maximum in the sensor 2 (rear sensor).
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