MG PTC Cabin Air Heater - Revision history

Larsrengersen: Control info added

2026-02-27T18:27:36Z

Control info added

← Older revision		Revision as of 18:27, 27 February 2026
Line 25:		Line 25:
	* no timers, counters or CRC are needed, but there is a '''delay of about 3 seconds''' until settings are applied		* no timers, counters or CRC are needed, but there is a '''delay of about 3 seconds''' until settings are applied
	* Bytes 2E and 2F contain the control messages, 3A has the responses		* Bytes 2E and 2F contain the control messages, 3A has the responses
	*		*Control is in byte 0+1 of 0x2E Scaling = x25 Little endian So if you want 20% power you need to send decimal 500 which is hex 01F4 So then Byte 0 = 0xF4 and Byte 1 = 0x01 Byte 4 looks to be on/off with 0x96 = ON and 0x00 = Off but it does not fully turn off. I kept seeing a current draw on the bench power supply of 0,07A at 300V. When requesting power 0% this does drop to 0A.
			*Feedback Message 0x3A Byte 5 and 6 contain the actual consumption in W as little endian. So if Byte 5 = CF and Byte 6 = 04 that is 04CF in hex which is 1,2 kW.
			*Below about 250V it stops working. Then 0x3A sends 00 00 00 08 00 00 00 20
			*Above 150 degrees it stops working. Then 0x3A sends 00 00 00 00 01 00 00 20

	==Connectors==		==Connectors==

2026-02-24T13:52:49Z

LIN Control

← Older revision		Revision as of 13:52, 24 February 2026
Line 23:		Line 23:
	==LIN Control==		==LIN Control==

	* no timers counters or CRC needed		* no timers, counters or CRC are needed, but there is a '''delay of about 3 seconds''' until settings are applied
	* Bytes 2E and 2F contain the control messages, 3A has the responses		* Bytes 2E and 2F contain the control messages, 3A has the responses
	*		*

2026-02-24T13:41:14Z

LIN Control details added as per https://youtu.be/HSuqpAJ16A8

← Older revision		Revision as of 13:41, 24 February 2026
Line 20:		Line 20:
	\|No		\|No
	\|}		\|}

			==LIN Control==

			* no timers counters or CRC needed
			* Bytes 2E and 2F contain the control messages, 3A has the responses
			*

	==Connectors==		==Connectors==

2026-02-23T15:43:40Z

added connector part numbers

2026-02-16T11:09:16Z

Overview: dimensions added

← Older revision		Revision as of 11:09, 16 February 2026
Line 6:		Line 6:

	Heater is controlled by LIN.		Heater is controlled by LIN.

			Dimensions are WxLxD 160 x 220 x 33mm for the active part with the control box adding another 30mm in length.

	==Part Numbers==		==Part Numbers==

2026-02-05T16:22:28Z

Add information about HV connection.

← Older revision		Revision as of 16:22, 5 February 2026
Line 20:		Line 20:

	==Connectors==		==Connectors==
	~~Low Voltage/Control~~		[[File:MG PTC Connector.png\|MG PTC Connector Pinout\|right]]

			=== Low Voltage/Control ===
	Unidentified - see image		Unidentified - see image

	Pinout		==== Pinout ====
	{\| class="wikitable"		{\| class="wikitable"
	\|+		\|+
Line 35:		Line 36:
	\|0.35		\|0.35
	\|Green/White		\|Green/White
	\| +		\| + fused with 5A
	\|-		\|-
	\|3		\|3
Line 47:		Line 48:
	\|GND		\|GND
	\|}		\|}
	~~[[File:MG PTC Connector~~.~~png~~\|~~left~~\|~~alt=MG PTC Connector Pinout~~\|~~MG PTC Connector Pinout]]~~
			=== High Voltage ===

			==== Pinout ====
			{\| class="wikitable"
			!Pin
			!Cross Section
			!Colour
			!Function
			\|-
			\|1
			\|3.00
			\|Orange
			\| HV+ fused with 40A
			\|-
			\|2
			\|3.00
			\|Orange
			\|HV-
			\|}
	[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]		[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]
	[[Category:Heater Air]]		[[Category:Heater Air]]

2024-12-20T18:13:58Z

2024-12-20T16:17:06Z

2024-12-07T16:23:11Z

← Older revision		Revision as of 16:23, 7 December 2024
Line 27:		Line 27:

	Pinout		Pinout
	~~[[File:MG PTC Connector.png\|alt=MG PTC Connector Pinout\|thumb\|MG PTC Connector Pinout]]~~
	{\| class="wikitable"		{\| class="wikitable"
	\|+		\|+
Line 50:		Line 49:
	\|GND		\|GND
	\|}		\|}
			[[File:MG PTC Connector.png\|left\|alt=MG PTC Connector Pinout\|MG PTC Connector Pinout]]
	[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]		[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]

2024-12-07T16:05:43Z

@@ Line 2: / Line 2: @@
 [[Category:MG]]
 [[Category:HVAC]]
-==Overview>==
+==Overview==
 PTC Air heater assembly found in MG EVs (ZS, MG4, MG5).
 ==Part Numbers==
@@ Line 20: / Line 22: @@
 ==Connectors==

← Older revision		Revision as of 18:13, 20 December 2024
Line 49:		Line 49:
	[[File:MG PTC Connector.png\|left\|alt=MG PTC Connector Pinout\|MG PTC Connector Pinout]]		[[File:MG PTC Connector.png\|left\|alt=MG PTC Connector Pinout\|MG PTC Connector Pinout]]
	[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]		[[File:Mg ptc connector image.jpeg\|alt=MG PTC Connector\|thumb\|MG PTC Connector]]
			[[Category:Heater Air]]

← Older revision		Revision as of 16:17, 20 December 2024
Line 1:		Line 1:
	~~[[Category:OEM]]~~		[[Category:MG]]
	[[Category:MG]]
	~~[[Category:HVAC~~]]
	[[File:Mg zc ptc air heater.webp\|alt=MG ZS PTC Air Heater\|thumb\|MG ZS PTC Air Heater]]		[[File:Mg zc ptc air heater.webp\|alt=MG ZS PTC Air Heater\|thumb\|MG ZS PTC Air Heater]]