P1698

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 9:

SYMPTOM
P1698 - NO BUS MESSAGE FROM TRANS 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
- Fused B(+) circuit less than 10.0 volts
- Fused ignition switch output circuit open
- PCM ground circuit(s) open
- PCM internal PCI bus open
- PCM PCI bus circuit open
- Wiring harness intermittent problem