Bus and Diagnostic Communication

P1625
No Bus Data From TRIONIC or TCM.
See Fault Tracing 3:5 Bus and Diagnostic Communication.






Fault Symptoms
No bus communication with TC/ABS.

Condition
The following conditions are applicable:
Trionic:
^ No bus communication for 3 seconds.
^ TC/ABS has been present on the bus at some time previously.

Diagnostic Help
Some of the following symptoms can perhaps be observed:
^ Speedometer does not work
^ Traction Control does not work
^ Cruise Control does not work
^ ABS lamp on







Checking The Wiring Harness
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.