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Fault Code Retrieval 5000TQ/early 200TQ
I don't know if you resolved your fault code retrieval problem but here is
If I remember correctly from an earlier conversation we had some months ago,
the early MAC11 (single knock sensor) MC motor in your 200TQ. Your
technique of inserting
the fuse in the fuel pump relay should work ok for fault code retrieval.
Before the code
retrieval, you are supposed to drive the vehicle and rev the engine above
and get the manifold pressure above 1.0 bar during this test drive. (i.e.
stomp on the throttle)
to exercise all the components in the system.
After your test drive you need to keep the engine running otherwise any
fault codes will be erased if you turn off the ignition. You should
insert the fuse
into the fuel pump relay for about 4 seconds and then remove it. Inserting
fuse into the fuel pump relay actually grounds pin 31 at the MAC11 ECU
is the same terminal that turns the "check engine" light on and off.
The first fault code should blink out on the "check engine" light
on the dash at that point. If you have no fault codes show up then you will
code 4444 flashed out meaning all is ok. (at least the computer thinks
everything is ok).
If you do have a fault code show up then inserting the fuse again for 4
retrieve the next fault code if there is more than one stored. The
will be cancelled if you raise the engine speed above 2000 RPM during the
code retrieval process or if you turn off the key (no duh!)
If you have a no start condition then you can crank the engine over for at
5 seconds and then leave the ignition key "on" and retrieve any fault
stored during the start procedure.
You can also run the "output" tests that can turn on the Fuel pump, mixture
frequency valve, the Wastegate frequency valve, the cold start valve
(don't leave the fuel pump running or don't run this test too long
or you could flood the engine!), and the carbon canister solenoid test.
These output tests will cycle these components on and off in the above
sequence to verify they are functioning. The ignition key should be turned
on, but the
engine should not be started . Insert the fuse as before for 4 seconds and
hear the fuel pump running to begin the output test sequence. Inserting the
for 4 seconds will change to the next output test in the sequence.