PCM Messages Not Received

Test 145 - 147:

Test 148 - 149:

SYMPTOM
PCM MESSAGE NOT RECEIVED

TEST NOTE
All symptoms listed above are diagnosed using the same tests. The title for the tests will be SBEC MESSAGES NOT RECEIVED BY MIC.

WHEN MONITORED
Monitored when ignition is ON.

SET CONDITION
No PCM messages received for 6 seconds.

POSSIBLE CAUSES
- PCM DEF internal PCI bus open
- PCM PCI bus circuit open
- Fused B(+) circuit less than 10.0 volts
- Fused ignition switch output circuit open
- PCM ground circuit(s) open