220
Step Action Value(s) Yes No
8
Replace ECM
Is the replacement complete?
Go to Step
(9)
-
9
Remove all test equipment except the DST.
Connect any disconnected components, fus-
es, etc.
Using the DST clear DTC information from
the ECM.
Turn the ignition OFF and wait 30 seconds.
Start the engine and run to full operating
temperature
Observe the MIL
Observe engine performance
After operating the engine within the test pa-
rameters of DTC 523821check for any stored
codes.
Does the engine operate normally with no stored
codes?
System OK
Go to OBD
System
Check
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