Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Audio system / Turning on light switch does not light up night time illumination of radio receiver

Toyota Corolla (E120): Turning on light switch does not light up night time illumination of radio receiver

Wiring diagram

Inspection procedure

Inspection procedure

1 Inspect radio receiver assy(ill+, ill–)

  1. Check that the voltage between terminals at each condition, as shown in the chart.

Standard:

Repair or replace harness or connector

Repair or replace harness or connector

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    Inspection procedure
    1 Inspect dlc3 terminal voltage(tc terminal) Turn the ignition switch to on.  measure voltage between terminals tc and cg of dlc3. Ok: voltage: 10 – 14 v 2 Check harness and connector(dlc3 – body ground) Check for open and short circuit in harness and connector betw ...

    Circuit description
    The ignition switch provides circuit power and the ecm provides the circuit ground that illuminates the mil. Mil operation is checked visually: it should be illuminated when the ignition is first turned on. If the mil is off all of the time or on all of the time, use the procedure below to ...

    Inspection procedure
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