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Section 4 – Troubleshooting Information Electrical System
4.2 Electrical System
4.2-1 All Controls Inoperative
1. Control Module CM1 display is broadcasting an
error message.
Check Control Module display screen and follow
instructions to clear error.
2. Battery charger plugged into external power
source.
Disconnect charger cord.
(if equipped with Delta Q Charger) Check continuity
between wire #B+ and wire #37 on Delta Q
Charger to test the N.C. contact in Battery Charger
Cutoff Relay L1CR
(if equipped with other charger) Check continuity
between wire #08C and wire #37 on other Charger
to test the N.C. contact in the Battery Charger
Cutoff Relay L1CR.
Replace charger if contact is not closed when
unplugged from external power source
Check continuity of wire #37 from Battery Charger
Cutoff Relay L1CR to Control Module CM1 pin
#P4-10
Use HMI Diagnostic menu to make sure Input P4-10
signal is present.
3. Batteries disconnected or faulty.
Connect batteries and test each battery for proper
supply voltage
4. Dirty or loose battery terminals. Clean and tighten connections.
5. Battery charge low.
Check each cell with a hydrometer. Reading should
be 1.275 (fully charged).
Recharge if low reading.
Replace if reading difference between cells is
0.050.
6. Main battery cables open or defective. Check continuity. Replace if defective.
7. Fuse F1 defective or open. Replace fuse.
8. Main battery disconnect switch S1 open or
defective.
Close switch.
Check continuity between wire #03 and wire #03A
on switch.
Check continuity between wire #98A and wire
#98B on switch.
Replace switch if no continuity between either one
of the switch poles.
9. Loose or broken wires from fuse F1 to Battery to
Main Disconnect S1
Check continuity to #03A. Replace if defective.
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