Glow Plug Module - Communication Error

Test 1 - Test 2:

Test 3 - Test 6:

SYMPTOM
P1482-GLOW PLUG MODULE - COMMUNICATION ERROR

POSSIBLE CAUSES
- Engine control module
- Glow plug control signal circuit open
- Glow plug control signal circuit shorted to ground
- Glow plug control signal circuit shorted to voltage
- Glow plug module
- Intermittent condition