No Response From Transmission Control Module - Body Control System

Test 1 - 3:

Test 4 - 7:

Test 8:

SYMPTOM
NO RESPONSE FROM TCM

POSSIBLE CAUSES
- Fused ignition switch output (Run/ST) circuit open
- Fused ignition switch output (start) circuit open
- Ground circuit open
- Fused B(+) circuit to TCM open
- Other Bus problems present
- PCI Bus circuit open
- TCM (PCI Bus circuit)