Diesel Data: Automotive Repair
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1 Communication With Scan Tool Is Not Possible

PROBLEM
No communications can be made with scan tool.

DESCRIPTION
When no communications can be made with the scan tool, it is likely that the diagnostic line is defective or that the transaxle control module is not functioning.

PROBABLE CAUSE OF TROUBLE
- Defective diagnostic line
- Defective transaxle control module power circuit
- Defective scan tool or scan tool harness
- Defective transaxle control module ground circuit
- Defective transaxle control module





DIAGNOSTIC CHART
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