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This relay is fitted to protect the engine and abs ecus from voltage surges and when it goes faulty it can cause all sorts of malfunctions including difficult starting,poor idling,stalling and abs system shutdown.As the problems are usually intermittent and do not show up on diagnostics they are very hard to trace.
The relay is located in the ecu compartment at the passenger side rear of the engine bay and is a tall silver relay with one or two fuses on top under a clear plastic cover.First check the fuses and if they are ok try cleaning the contacts on the bottom plug as corrosion here has been known to cause the problems,if this does not help replace the relay.
Geo.
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