Charge does not stop when trigger pressed UK AC charging.

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michael8554

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Aug 10, 2023
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133
Location
Wiltshire UK
I've tried two granny chargers on my 2011 UK MIEV, and neither stops the charging when the trigger on the plug is pressed.
But the triggers do stop the charging on my 2014 Outlander PHEV.
Looking at the wiring diagrams (Regular Charging Control System):
For 2011, Pin 4 of the plug (the PP signal) goes to CNCT on the EV-ECU, and to earth via an unspecified value resistor.
I measure 800ohms to earth on Pin 4.
For 2015 onwards Pin 4 goes directly to the On Board Charger/DC-DC Converter, no resistor.
So no-arcing disconnect doesn't seem to happen on my car - any ideas ?
 
According to wiki :
https://en.wikipedia.org/wiki/SAE_J1772

CP (pin 4 per standard, but pin 3 on car side)
The vehicle can request a certain charging function by setting the resistance between the CP and PE pins; 2.7 kΩ announces a Mode 3 compatible vehicle (vehicle detected) which does not require charging. 880 Ω says the vehicle is ready to be charged,

PP (pin 5 per standard, but connecting to pin 4 on car side)
The proximity pin, PP (also known as plug present), as shown in the SAE J1772 example pinout, describes the switch, S3, as being mechanically linked to the connector latch release actuator. During charging, the EVSE side connects the PP–PE loop via S3 and a 150 Ω R6; when opening the release actuator a 330 Ω R7 is added in the PP–PE loop on the EVSE side which gives a voltage shift on the line to allow the electric vehicle to initiate a controlled shut off prior to actual disconnection of the charge power pins

On the vehicle side PP pin 4 goes to the EV-ECU and via a 2.7kOhm resistor to ground to form a voltage divider when the plug is connected. You should be able to measure a voltage change on pin 103 (C-111, EV-ECU) when the actuator on the plug is pressed.
 
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