9-3 SE Hatchback (9400) L4-2.0L Turbo (B205) HO (2000)
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The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness.
Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO
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See: No Communication With TCM/Cars With Trionic T5 or Motronic Engine Management System/Rectifying the Lead - II
YES -
See: No Communication With TCM/Cars With Trionic T5 or Motronic Engine Management System/Final Check
Rectifying the Lead - I
Rectifying The Lead
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Repair or replace the fault lead.
After performing this procedure See: No Communication With TCM/Cars With Trionic T5 or Motronic Engine Management System/Final Check
Rectifying the Lead - II
Rectifying The Lead