Limp Home Mode

WARNING: This page is about a different variant/trim than selected.

Features a fail-safe function that prevents dangerous situations in the event of a transaxle failure. The vehicle will be driven in limp home mode if the transaxle malfunctions. In this mode, the transaxle operates at a minimal functionality level (fixed shifting, limited shifting, reverse, neutral), making it possible for the vehicle to reach a service center.

Information

Limp Home Mode: Limited shifting

Mechanical limp home mode: Fixed shifting (failure of mechanical parts, solenoid valves, TCM, CAN communication)

TROUBLE SYMPTOM AND SUSPECTED AREA DESCRIPTION

Trouble symptom	Suspected area	Fault diagnosis list	Remedy
Automatic transaxle delay	Clutch/Brake damage	Asynchronous error	Clutch/Brake
	Oil pressure control faulty		Solenoid valve, Valve body
	Oil pressure supply faulty		Electric Oil Pump (EOP)
			Automatic transaxle fluid cleanliness (Debris)
			Automatic transaxle fluid level
Automatic transaxle or driveline vibration	Clutch/Brake damage	Asynchronous errors	Clutch/Brake
	Oil pressure control faulty	Speed sensor errors	Solenoid valve, Valve body
	Oil pressure supply faulty		Electric Oil Pump (EOP)
	Speed sensor faulty		Automatic transaxle fluid cleanliness (Debris)
	Automatic transaxle harness faulty		Automatic transaxle fluid level
	Damage to the vehicle connectors and wiring		Speed sensor and connector
			Automatic transaxle harness and connector
			Vehicle connectors and wiring
Fixed gear (Shift not possible)	Solenoid valve faulty	Solenoid valve errors	Clutch/Brake
	TCM S/W reprogram	TCM checksum error	Solenoid valve, Valve body
		Asynchronous error	Electric Oil Pump (EOP)
			Automatic transaxle fluid cleanliness (Debris)
			Automatic transaxle fluid level
			Speed sensor and connector
			Automatic transaxle harness and connector
			Vehicle connectors and wiring
Vehicle moves, but drivetrain in lmp mode	Inhibitor switch faulty	Inhibitor switch faulty	Inhibitor switch and wiring
	Oil pressure supply faulty	Electric Oil Pump (EOP) faulty	Electric Oil Pump (EOP) (Hall IC, 3P Power Control Circuit)
		Oil Pump Unit (OPU) faulty	Oil Pump Unit (OPU)
		Electric Oil Pump (EOP) Relay faulty	Electric Oil Pump (EOP) relay
			Vehicle connectors and wiring
			Power
HEV not driving (E/C limp home)	CAN communication faulty	CAN communication faulty	CAN communication line
	Engine clutch solenoid valve faulty	Engine clutch solenoid valve faulty	Controller
	HSG, Motor, Battery etc part faulty		Power line
			Engine clutch solenoid valve
			High voltage battery etc faulty
Poor acceleration	Oil pressure supply faulty	Electric Oil Pump (EOP)/Oil Pump Unit faulty	Electric Oil Pump (EOP) (Hall IC, 3P Power Control Circuit)
		Electric Oil Pump (EOP) relay faulty	Oil Pump Unit (OPU)
		Power line faulty	Electric Oil Pump (EOP) relay
			Vehicle connectors and wiring
			Power