P1698

Tests 1 - 2:

Tests 3 - 5:

Tests 6 - 9:

Test 10:

SYMPTOM
P1698 - NO BUS MESSAGE FROM TRANSMISSION CONTROL MODULE

WHEN MONITORED
Equipped with automatic transmission, the ignition key ON, engine running, transmission in Drive, vehicle road speed and battery voltage greater than 10 volts.

SET CONDITION
No bus messages from the TCM for 10 seconds, two trips required

POSSIBLE CAUSES
- CCD bus (+) circuit open to PCM
- CCD bus (-) circuit open to PCM
- CCD bus (+) open to TCM
- CCD bus (-) open to TCM
- Fused B+ circuit to TCM open
- Fused ignition switch output (RUN/START) circuit open
- Ground circuit open
- Wiring harness intermittent problem
- TCM