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

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DTC U3000:04/U3000:09/U3000:42/U3000:49 [FORWARD SENSING CAMERA (FSC)]

Description	Forward sensing camera (FSC) internal malfunction
Detection condition	U3000:04 Forward sensing camera (FSC) detects an error in the image-related circuit in the forward sensing camera (FSC) with the ignition switched ON (engine off or on). U3000:09 Forward sensing camera (FSC) detects an internal temperature sensor malfunction in the forward sensing camera (FSC) with the ignition switched ON (engine off or on). U3000:42 Forward sensing camera (FSC) detects a NVRAM error in the forward sensing camera (FSC) with the ignition switched ON (engine off or on). U3000:49 Forward sensing camera (FSC) detects a malfunction in the forward sensing camera (FSC) with the ignition switched ON (engine off or on).
Fail-safe	U3000:04 Inhibits the lane departure warning system (LDWS). Inhibits the high beam control (HBC) system. U3000:09 Inhibits the lane departure warning system (LDWS). Inhibits the high beam control (HBC) system. U3000:42 Inhibits the lane departure warning system (LDWS). Inhibits the high beam control (HBC) system. U3000:49 Inhibits the lane departure warning system (LDWS). Inhibits the high beam control (HBC) system.
Possible cause	Forward sensing camera (FSC) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY IF MALFUNCTIONING LOCATION IS FORWARD SENSING CAMERA (FSC) DEPENDING ON REPEATABILITY Clear the DTC for the forward sensing camera (FSC) using the M-MDS. (See CLEARING DTC [FORWARD SENSING CAMERA (FSC)].) Retrieve the forward sensing camera (FSC) DTCs using the M-MDS. (See DTC INSPECTION [FORWARD SENSING CAMERA (FSC)].) Is the same DTC displayed?	Yes	Replace the forward sensing camera (FSC), then go to the next step. (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)
		No	Go to the next step.
2	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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