Test Point 12 - Permanent Power Supply

TEST POINT 12 - Permanent power supply EZK control unit (V)

Possible Causes, Elimination, Remarks
a) Permanent positive (B +); If B + is not present the fault memory is erased

Test procedure:
- At the control unit plug, connect the voltmeter with terminals 18 (-) and 35 (+) by means of the test leads.

Display: battery voltage
No display: check according to wiring diagram




b) Power supply through EZK relay
- At the control unit plug, connect the voltmeter by means of the test leads to terminals 18 (-) and 29 (+). Switch on the ignition.

Display: battery voltage
No display: check according to wiring diagram