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ft丰田卡罗拉corolla维修手册带电路图英inspection2.pdf

发布：2025-04-17约2.08万字共8页下载文档
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12–1

EMISSIONCONTROL–EMISSIONCONTROLSYSTEM

EMISSIONCONTROLSYSTEM

1204D–01

ON–VEHICLEINSPECTION

1.INSPECTAIR–FUELRATIOCOMPENSATIONSYS-

TEM

HINT:

Youcanalsocheckthesystembychoosing”DATAMONITOR”,

then”O2SENSOROUTPUTVOLTAGE”onthemonitorofthe

hand–heldtester.

(a)Connectthehand–heldtestertotheterminal23(OX1A)

⇔7(E1)and21(OX1B)⇔7(E1)oftheECM.

CAUTION:

Connecttestleadsfromthebacksideoftheconnectorwith

theECUconnected.

E1OX1B

(b)Warmuptheoxygensensorwiththeenginespeedat

2,500rpmforapprox.2minutes.

(c)Confirmthatthevoltagechangesbetween0Vto1Vwith

theenginespeedat2,500rpm.

OK:

Thevoltagechangesmorethan8timesin10se-

conds.

CAUTION:

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