940se OBD diagnostic problem

  • Thread starter Thread starter Bilko
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Bilko

1993 2.0l model... my father-in-law's car.

Car wouldn't start so decided to read the ECU codes for a clue.

When he ran the OBD diagnostics, he got a 1-1-1 on port 6 but when he tried
on port 2 he got nothing -- no flashes at all. The red LED lights up when
the button is pressed but there are no subsequent flashes.

Anyone came across this before.... is this symptomatic of a faulty ECU?
 
Bilko said:
1993 2.0l model... my father-in-law's car.

Car wouldn't start so decided to read the ECU codes for a clue.

When he ran the OBD diagnostics, he got a 1-1-1 on port 6 but when he tried
on port 2 he got nothing -- no flashes at all. The red LED lights up when
the button is pressed but there are no subsequent flashes.

Anyone came across this before.... is this symptomatic of a faulty ECU?
Click to expand...

i would say...the ecu isnt powered up...main relay?

Tim..
 
Tim.. said:
i would say...the ecu isnt powered up...main relay?
Click to expand...

But surely if the ECU returns flashes for the port 6 (ignition) diagnostic,
it must be powered up?
 
Bilko said:
1993 2.0l model... my father-in-law's car.

Car wouldn't start so decided to read the ECU codes for a clue.

When he ran the OBD diagnostics, he got a 1-1-1 on port 6 but when he tried
on port 2 he got nothing -- no flashes at all. The red LED lights up when
the button is pressed but there are no subsequent flashes.

Anyone came across this before.... is this symptomatic of a faulty ECU?

--

Thanks

Bilko
Click to expand...

This happened to my brother in his 1990 740 Turbo - the car quit on the
highway with no warning. The ignition returned 1-1-1, and there was no
response from the fuel. The ECU was dead. Of course if the ECU wasn't
getting power, you'd have a similar situation.
 
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