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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC C1001:97 [FORWARD SENSING CAMERA (FSC)]

Description	Forward sensing camera (FSC) poor visibility
Detection condition	With the LDWS switch on or the high beam control (HBC) system operating, the forward sensing camera (FSC) detects that its field of view is obstructed for a certain period of time.
Fail-safe	Inhibits the lane departure warning system (LDWS). Inhibits the high beam control (HBC) system.
Possible cause	Windshield is dirty Forward sensing camera (FSC) lens is dirty Forward sensing camera (FSC) malfunction Frosted windshield Nighttime, roads without street lights or reflective objects
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY WINDSHIELD DIRT Verify if the windshield is dirty. Is the windshield dirty?	Yes	Clean the windshield, then go to Step 3.
		No	Go to the next step.
2	VERIFY FORWARD SENSING CAMERA (FSC) LENS DIRT Verify if the forward sensing camera (FSC) lens is dirty. Is the forward sensing camera (FSC) lens dirty?	Yes	Clean the forward sensing camera (FSC) lens, then go to the next step.
		No	Go to the next step.
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear the DTC for the forward sensing camera (FSC) using the M-MDS. (See CLEARING DTC [FORWARD SENSING CAMERA (FSC)].) Drive the vehicle at 20 km/h or more for 3 min or more with the LDWS switch on. Retrieve the forward sensing camera (FSC) DTCs using the M-MDS. (See DTC INSPECTION [FORWARD SENSING CAMERA (FSC)].) Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the forward sensing camera (FSC). (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [FORWARD SENSING CAMERA (FSC)].)
		No	DTC troubleshooting completed.

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