TEST OR INSPECTION
Remove pump house panel S (WP 0540). Check for 22 to 28 VDC between high
amperage cable 1413766 (red) from glow plug control relay, terminal to a known good
If 22 to 28 VDC are present, go to Step 6.
Turn battery disconnect switch to OFF position (WP 0007). Check for continuity across
glow plug control relay circuit breaker from terminal to terminal.
If there is no continuity across circuit breaker, replace glow plug control relay
circuit breaker (WP 0391).