EPS Control Module Inspection

Measure the voltage of the EPS control module using a tester.

Fig 1: Identifying EPS Control Module Connector Terminals

G11278872

Courtesy of MAZDA MOTORS CORP.

Terminal Voltage Table (Reference)

Terminal	Connected to	Test condition	Specification (Reference)	Inspection item
1A	Battery	Under any condition	B+	Inspect the battery. (See BATTERY INSPECTION ). Inspect related wiring harness.
2A	IG1 relay	Ignition off	1.0 V or less	Inspect the IG1 relay. (See RELAY INSPECTION ). Inspect related wiring harness.
2A	IG1 relay	Ignition ON (engine off)	B+
2B	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2C	CAN related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.