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

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DTC U0001:88/U0100:00/U0101:00/U012B:00/U0131:00/U0151:00/U0155:00 [DSC HU/CM]

DTC	U0001:88	CAN communication: module communication error
	U0100:00	CAN communication: communication error to PCM
	U0101:00	CAN communication: communication error to TCM
	U012B:00	CAN communication: communication error to EVP control unit
	U0131:00	CAN communication: communication error to EPS control module
	U0151:00	CAN communication: communication error to SAS control module
	U0155:00	CAN communication: communication error to instrument cluster
DETECTION CONDITION		U0001:88 Open or short circuit in CAN system wiring harness is detected. U0100:00 Communication error to PCM is detected. U0101:00 Communication error to TCM is detected. U012B:00 Communication error to EVP control unit is detected. U0131:00 Communication error to EPS control module is detected. U0151:00 Communication error to SAS control module is detected. U0155:00 Communication error to instrument cluster is detected.
FAIL-SAFE FUNCTION		Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		CAN communication line malfunction CAN communication line malfunction with PCM CAN communication line malfunction with TCM CAN communication line malfunction with EVP control unit CAN communication line malfunction with EPS control module CAN communication line malfunction with SAS control module CAN communication line malfunction with instrument cluster Instrument cluster malfunction
SYSTEM WIRING DIAGRAM		—

Diagnostic Procedure

Perform inspection according to the diagnostic procedure in MULTIPLEX COMMUNICATION SYSTEM. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW.)

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