Troubleshooting
Error Location Type Description
Cause Solution
Short circuit of
motor wiring.
Check wiring to the motor
to ensure no bare wires are
touching and that no wires
are shorted to ground.
Motor wil l not
rotate.
Remove pump gear
housings from motor
and check that motor shaft
rotates freely in direction
indicated on motor housing.
Damaged gear
train.
Check pump gear trains
for damage and repair or
replace as necessary.
A4NM
MCM
High Motor Current
Chemical pump is
stuck.
Repair or replace chemical
pump.
A7DA Heater A
Unexpected Current
A
Shorted TCM If error cannot be cleared
or reg enerates consistently,
replace module.
A7DB Heater B
Unexpected Current
B
Shorted TCM If error cannot be cleared
or reg enerates consistently,
replace module.
A7DH Hose
Unexpected Current
Hose
Shorted TCM If error cannot be cleared
or reg enerates consistently,
replace module.
333024F 15
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