Light control module making a clicking sound with key on
You don't need a wiring diagram ,what you need is a scan tool that will pull codes from the LCM , an LCM Parameter Identification (PID) Index ! Checking codes first !
LCM Diagnostic Trouble Code (DTC) Index
DTC
Description
DTC Caused By
Action
B1312
Lamp Headlamp Input-Short to B+
LCM
REFER to Section 417-01 .
B1334
Decklid Ajar-Short to Gnd
LCM
REFER to Section 501-14B .
B1340
ESC Tone Input Request Short to Ground
LCM
REFER to Section 501-14B .
B1342
ECU-Defective
LCM
REPLACE the LCM. REFER to Section 419-10 . TEST the system for normal operation.
B1352
Ignition Key-In-Ckt Failure
LCM
GO to Pinpoint Test C .
B1359
Ignition Run/Acc Circuit Failure
LCM
REFER to Section 211-05 .
B1462
Seat Belt SW_Ckt Failure
LCM
GO to Pinpoint Test B .
B1485
Brake Pedal Input Circuit Short to Batt.
LCM
REFER to Section 417-01 .
B1555
Ignition Run/Start Circuit Failure
LCM
REFER to Section 211-05 .
B1569
High-Beam-Short to B+
LCM
REFER to Section 417-01 .
B1577
Park Lamp Input-Short to B+
LCM
REFER to Section 417-01 .
B1581
Panel Dim Increase Input Circuit Short to B+
LCM
REFER to Section 413-00 .
B1585
Dim Panel Decrease Input Circuit Short to B+
LCM
REFER to Section 413-00 .
B1676
Battery Voltage Out of Range
LCM
REFER to Section 414-00 .
B1687
Dome Lamp Input Short to B+
LCM
GO to Pinpoint Test D .
B1689
Autolamp Delay Input Circuit Failure
LCM
REFER to Section 417-01 .
B1691
Autolamp Delay Input Circuit Short to B+
LCM
REFER to Section 417-01 .
B1695
Autolamp ON/OFF Short to B+
LCM
REFER to Section 417-01 .
B1873
Turn Signal/Hazard Power Feed Short to Ground
LCM
REFER to Section 417-01 .
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