Engine Will Not Start When Below 40 Degrees F

Tests 1571 - 1575:

Tests 1576 - 1578:

SYMPTOM
* ENGINE WILL NOT START WHEN BELOW 40 DEGREES F

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 defective
- Fuel heater defective