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

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DTC C1001:92 [FORWARD SENSING CAMERA (FSC)]

Description	Poor functioning of forward sensing camera (FSC)
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 poor 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 fogging Forward sensing camera (FSC) lens fogging Forward sensing camera (FSC) malfunction Heavy rain, dense fog, snow, backlight No traffic lane lines or traffic lane lines are faded/patchy
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY WINDSHIELD FOGGING Verify if the windshield is fogged. Is the windshield fogged?	Yes	Use the defroster to clear the fogging from the windshield, then go to Step 3.
		No	Go to the next step.
2	VERIFY FOGGING ON FORWARD SENSING CAMERA (FSC) LENS AREA Verify if there is any fogging on the forward sensing camera (FSC) lens. Is the forward sensing camera (FSC) lens fogged?	Yes	Use the defroster to clear the fogging on 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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