P1902

P1902

No Bus Data From TWICE












Fault symptoms
No bus communication with the TWICE.

Condition
The following conditions are applicable:

Trionic:
- Engine has started
- No communication for 10 seconds

TCM:
- The automatic transmission input shaft speed exceeded 200 rpm once during the present driving cycle.
- No communication for 6 seconds.

Diagnostic help
Some of the following symptoms may be observed:
- Additional diagnostic trouble codes in Trionic (P1901, P1623 or P1622).
- Additional diagnostic trouble code in the TCM (P1921)
- Engine fails to start.
- Cruise Control does not work.
- Radio does not work.
- Central locking system does not work.
- Remote control does not work.

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.