Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Catalyst system efficiency below threshold

Toyota Corolla (E120): Catalyst system efficiency below threshold

Dtc p0420 catalyst system efficiency below threshold (bank 1)

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Preparation Sst Recomended tools Ssm Equipment ...

Sound quality is bad only when cd is played(volume is too low)
Inspection procedure 1 Replace cd with another and recheck Replace the cd with another and recheck.  Check the installation condition of the radio receiver assembly. Standard: malfunction disappear. Check and replace radio receiver assy ...

Turning on light switch does not light up night time illumination of radio receiver
Wiring diagram Inspection procedure 1 Inspect radio receiver assy(ill+, ill–) Check that the voltage between terminals at each condition, as shown in the chart. Standard: Repair or replace harness or connector ...