Hyundai Elantra (CN7): IMS(Integrated Memory System) / Memory power seat unit

Hyundai Elantra (CN7) 2021-2026 Service Manual / Body Electrical System / IMS(Integrated Memory System) / Memory power seat unit

Components and components location

Components

Connector Pin Information

Pin no	Connector A	Connector B	Connector C
1	-	B (+)	Slide switch signal (Forward)
2	Reclining motor (Forward)	GND(Power)	Reclining switch signal (Forward)
3	Height motor (Up)	B (+)	Front tilt switch signal (Up)
4	Slide motor (Forward)	-	Height switch (Up)
5	-	GND	Reclining limit switch signal (Forward)
6	Reclining motor (Backward)		B_CAN (High)
7	Tilt motor (Up)		B_CAN (Low)
8	Tilt motor (Down)		-
9	Height motor (Down)		Driver lumber motor (Mid)
10	Slide motor (Backward)		Seat slide sensor
11			Seat tilt sensor
12			-
13			Seat position sensor power
14			IGN 1
15			Seat slide switch (Backward)
16			Seat recline switch (Backward)
17			Tilt switch (Down)
18			Height switch (Down)
19			Reclining limit switch signal (Backward)
20			GND
21			-
22			IMS Switch
23			Driver lumber motor (Def)
24			Reclining sensor
25			Height sensor
26			-
27			-
28			B(+)

Schematic diagrams

Circuit Diagram

Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the driver seat assembly. (Refer to Body - "Front Seat Assembly")

3.	Loosening the IMS unit mounting screws.

4.	Disconnect IMS module connectors (A) and then remove the IMS unit.

Installation

1.	Install the memory power seat unit.

2.	Install the driver seat assembly.

3.	Connect the negative (-) battery terminal.

❮Schematic diagrams

Components

Memory power seat switch❯

Components and components location Components Repair procedures Removal1.Disconnect the negative (-) battery terminal.2.Remove the driver door trim.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Compressor oil

Repair procedures Oil Specification1.The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed.2.Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the model of compressor.

Hyundai Elantra (CN7) 2021-2026 Service Manual: Heater & A/C Control Unit (DATC)

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