P0600 - Serial Communication Link Malfunction

The Automatic Transaxle (A/T) circuits are monitored to the Powertrain Control Module (PCM). The test fails when the PCM continuously receives incorrect voltage from the Transmission Control Module (TCM).

Possible Causes:
- The circuits between the PCM and the TCM is open
- The circuits between the PCM and the TCM is shorted to VPWR
- The circuits between the PCM and the TCM is shorted to GND

Diagnostic Aids:
Check the harnesses and connectors.