Volkswagen Golf Service & Repair Manual: Performing battery test with Midtronics -MCR340V- battery tester

Volkswagen Golf Service & Repair Manual / Electrical system, general information / Starter- current supply- CC / Checking battery / Performing battery test with Midtronics -MCR340V- battery tester

Prerequisites:

WARNING

Before working on the battery, read through the warning and safety regulations carefully, and comply with them → Chapter.

It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/jump starting.

These batteries must be renewed.

–	Read general description → Chapter.

–	Perform visual check → Chapter.

–	Open bonnet or cover for other installation location of battery.

–	Determine whether battery type is “Standard” or “AGM”.

–	Remove covers from battery positive and negative terminals.

–	Use wing covers or other kinds of cover before you use equipment in engine compartment or interior.

–	Close all doors.

Note

Battery temperature must be at least 10°C.

For additional information, refer to the → operating manual INC 940.

Perform test:

WARNING

It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/jump starting.

These batteries must be renewed.

–	Switch off ignition and all electrical consumers.

–	Check magic eye on batteries with magic eye → Chapter.

–	Switch tester on.

–	Connect red terminal “+” of tester to positive terminal.

–	Connect black terminal “-” of tester to negative terminal.

Note

Ensure test clamps have a good contact!

–	Select “In vehicle” or “Outside vehicle”.

–	Select “Warranty test”.

Note

Use the print function of the Midtronics -MCR340- tester if the test results are required for handling warranty applications.

–	Select battery type “Standard ” or “AGM”.

–	Make a note of the DIN value of the battery as shown on the battery sticker. If there is no DIN value on the sticker, make a note of the SAE value.

–	Enter DIN value in tester and perform battery test → operating manual MCR340V.

–	If you are using SAE value, access “Miscellaneous” menu and change from “DIN” to “SAE” → operating manual MCR340V.

Note

Always use DIN value from battery sticker! Otherwise, test result will be falsified.

Assessing test results

Results of battery test:

Battery test results	Measures
Battery OK	None
Good - charge	Charge battery → Chapter.
Use Incharge	Charge battery → Chapter.
Renew battery	Renew battery → Electrical system; Rep. gr.27
Battery cell defective	Renew battery → Electrical system; Rep. gr.27

General description

WARNING Danger of injury. Before working on the battery, read through the warning and saf ...

Dealing with problems with Midtronics -MCR340V- battery tester

Under certain circumstances, the display may show errors or messages according to status. The most frequent display messages are listed below, ...

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