GE JS998 Series - Element Failures Troubleshooting; Bake Element Not Working Troubleshooting

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Bake Element Does Not Work
Enter the service mode and
turn the bake element on.
Is the bake element on?
No
Is 240 VAC present from the MPB
relay K11 COM TO K8 NO contacts?
Yes
No
Is 240 VAC present from the MPB
relay K11 COM contact to K8 COM?
Yes
Is -14.0 VDC present from the MLB
connectors J3, pin 6 to J5, pin 2?
No
Yes
Is -14.0 VDC present from the MPB
connectors J1, pin 6 to J3, pin 2?
Repair the faulty
wiring from the
MLB and MPB.
No Yes
Replace
the MPB.
Is 4.2 VDC present from
the MPB connectors J1,
pin 1 to J3, pin 2?
No
Repair the faulty
wiring from the
MLB to MPB.
No
Is 240 VAC
present at the
bake element
connectors?
Replace the bake element.
Repair the faulty wiring from the
MPB to the bake element.
Yes
No
Replace
the MPB.
Is 240 VAC present from the MPB
relay K11 COM contact to K7 NC?
Repair the faulty wiring from the
MPB relay K8 COM to K7 NC.
No
Yes
Is 240 VAC present from the MPB
relay K11 COM contact to K7 COM?
Yes
Is 4.6 VDC present from
the MLB connectors
J3, pin 7 to J5, pin 2?
Replace
the MLB.
Is 4.6 VDC present from
the MPB connectors
J1, pin 7 to J3, pin 2?
Is 4.2 VDC present from
the MLB connectors J3,
pin 1 to J5, pin 2?
Replace
the MLB.
No
Is 240 VAC present from the
MPB relay K11 NO contact
to K7 COM?
Yes
Is 4.6 VDC present from the MLB
connectors J3, pin 11 to J5, pin 2?
Yes
Is 4.6 VDC present from the MPB
connectors J1, pin 11 to J3, pin 2?
Repair the faulty
wiring from the
MLB and MPB.
No
Yes
Replace
the MPB.
Repair the faulty
wiring from the
MLB to MPB.
No
Replace R1 or repair the faulty
wiring from the L1 or L2 input.
Replace
the MLB.
No
Yes
No
No
Yes Yes Yes
Replace
the MLB.
No