Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Random/multiple cylinder misfire detected

Toyota Corolla (E120): Random/multiple cylinder misfire detected

Dtc p0300 random/multiple cylinder misfire detected

Dtc p0301 cylinder 1 misfire detected

Dtc p0302 cylinder 2 misfire detected

Dtc p0303 cylinder 3 misfire detected

Dtc p0304 cylinder 4 misfire detected

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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). Hint: ”a/f control” is the active te ...

Inspection procedure
1 Inspect ecm(+b voltage) Turn the ignition switch on.  measure the voltage between the terminals of the e4 and e6 ecm connectors. Standard: 2 Check harness and connector(ecm – body ground) Disconnect the e4 ecm connector. check the resistance between the wire ...

Wireless remote control/electronic key battery
Replace the battery with a new one if it is depleted. As the key may be damaged if the following procedure is not performed properly, it is recommended that key battery replacement be performed by your Toyota dealer. ■If the key battery is depleted The following symptoms may occur: The smart ke ...