Checking Fuel Heater

Tests 1 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
* CHECKING THE FUEL HEATER

POSSIBLE CAUSES
- Fuel heater ground circuit open
- Fuel heater relay ground circuit open
- Fuel heater relay output circuit open
- Fused B+ circuit open
- Fused ignition switch output circuit open
- Fuel heater relay
- Fuel heater