The information on this page is illustrative. It is not to be used for training purposes or as guidance or instruction. It is also incomplete. A full version of this content can be found in our PicoScope 7 Automotive software, which is downloadable from here.
The purpose of the test is to check the operation and integrity of the Proximity Pilot (PP) line on an Electric Vehicle (EV) having a Type 1 coupling (IEC 62196-2) with the Electric Vehicle Supply Equipment (EVSE).
The PP line comprises a circuit designed to indicate to the OBC the connection status of the EVSE charging cable.
A connection is made between the vehicle and EVSE by pushing a Type 1 charging cable connector into the vehicle's charging port.
The two are disconnected by:
The PP line functionality can be checked by disconnecting the PP line between the OBC and the vehicle charging port and measuring the change in resistance between the PP line (on the vehicle charging port side of the connector) and the vehicle chassis earth.
To complete this test you may need to disconnect connections at the OBC end of the circuit or locate a more accessible connector using the manufacturer's technical information.
In all circumstances, do not carry out a resistance measurement with the Proximity Pilot line intact as there is the potential for harm to the vehicle or your test equipment.
The modes of PP line operation for each connection status are described as follows:
Symptoms and fault diagnosis
If the charging does not start when the EVSE charging cable is connected to the vehicle, there may be a high resistance in the PP line circuit within the charging cable connector. This is because the OBC expects to see approximately 142 ohms on this line before it commands, via a separate circuit, the EVSE to start charging.
This help topic is subject to changes without notification. The information within is carefully checked and considered to be correct. This information is an example of our investigations and findings and is not a definitive procedure. Pico Technology accepts no responsibility for inaccuracies. Each vehicle may be different and require unique test settings.
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