Renault Megane 1996-2003

Bad Earth on Block

Non-start turns over no spark or fuel pump run (relay may buzz) check ECU earth bolts onto engine block. Volt drop between earth and pins 1 and 2 on ECU, meter should read less than 0.5v when switched on, see meter.

This is a bad connection the voltage is trying to go through the meter.

Volt Drop ECU Pins 1 and 2 to Earth

EOBD/OBD Socket Location Index