ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR
(a) Disconnect the K3 automatic light control sensor connector. |
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(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
K3-1 (CLTB) - K3-2 (CLTE) | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V |
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
K3-2 (CLTE) - Body ground | Always | Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the K3 automatic light control sensor connector. |
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(d) Connect an oscilloscope to the automatic light control sensor connector.
(e) Check the waveform. OK:
HINT: The communication waveform changes according to the surrounding brightness. If the result is not as specified, the automatic light control sensor may be malfunctioning. | |
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