Exterior Lighting System

LIGHTING (EXT): LIGHTING SYSTEM: TERMINALS OF ECU; 2013 MY Corolla [07/2012 -]

1. CHECK DAYTIME RUNNING LIGHT RELAY

(a) Disconnect the E91 relay connector.





(b) Measure the voltage between the specified terminals of the wire harness side connectors and body ground.

Standard Voltage:





* *1: for TMC Made

* *2: except TMC Made

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Measure the resistance between the specified terminals of the wire harness side connectors and body ground.

Standard Resistance:





If the result is not as specified, there may be a malfunction on the wire harness side.

(d) Reconnect the E91 relay connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





* *1: w/ Automatic Light Control Sensor

* *2: except TMC Made

If the result is not as specified, the ECU may have a malfunction.

(f) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





* *1: for TMC Made

* *2: except TMC Made

* *3: w/ Automatic Light Control Sensor

If the result is not as specified, the ECU may have a malfunction.

(1) Waveform 1









(2) Waveform 2









HINT
If the ambient light becomes brighter, width A becomes narrower.