Whirlpool Cabrio Service Manual page 13

FOR SERVICE TECHNICIAN'S USE ONLY
 If +5VDC is still missing, unplug dryer or
disconnect power and replace the ACU.
 If +5VDC returns, unplug dryer or
disconnect power and check harnesses
and connections between the ACU and user
interface (UI). If acceptable, replace the UI.
8. ACU +12VDC – with voltmeter set to DC,
connect black probe to ACU P5-3 (ground)
and red probe to P5-8 (+12VDC). Plug in
dryer or reconnect power.
 If +12VDC is present, go to step 9.
 If +12VDC is not present, unplug dryer
or disconnect power and replace the ACU.
9. Unplug dryer or disconnect power.
10. Reassemble all parts and panels.
11. Perform steps under "Service Test Mode",
page 6, to verify repair.
TEST #2: Supply Connections
This test assumes that proper voltage is present
at the outlet, and for U.S. installations, a visual
inspection indicates that the power cord is
securely fastened to the terminal block (electric
dryer) or wire harness connection (gas dryer).
ELECTRIC DRYER (U.S. Installations):
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the top right
corner of the back of the dryer. See figure 3.
Figure 3 - Remove the cover plate.
3. With an ohmmeter, check for continuity
between the neutral (N) terminal of the plug
and the center contact on the terminal block.
See figure 4a.
 If there is no continuity, replace the power
cord and test the dryer.
 If there is continuity, go to step 4.
4. In a similar way, check which terminal of
the plug is connected to the left-most contact
on the terminal block and make a note of
it. This will be L1 (black wire) in the wiring
diagram. See figure 4a.
 When this is found, go to step 5.
DO NOT REMOVE OR
Remove
Screw
Cover Plate
DESTROY
 If neither of the plug terminals have
continuity with the left-most contact of the
terminal block, replace the power cord and
retest dryer.
Power Cord
N Plug
COM
Figure 4a - Plug-to-terminal connections
for electric dryer.
5. Access the machine electronics without
disconnecting any wiring to the ACU.
6. With an ohmmeter, check for continuity
between the L1 terminal of the plug (found
in step 4) and P9-2 (black wire) on the ACU.
 If there is continuity, go to step 7.
 If there is no continuity, check that wires to
the terminal block are mechanically secure.
If so, replace the main wire harness and
test the dryer.
7. Check for continuity between the neutral
(N) terminal of the plug and P8-3 (white wire)
on the ACU.
 If there is continuity, go to step 8.
 If there is no continuity, and the mechanical
connections of the wire are secure, replace
the main wire harness.
8. Visually check that ALL connectors are
fully inserted into the ACU.
9. Visually check that ALL connectors are
fully inserted into the UI.
10. Reassemble all parts and panels.
11. Plug in dryer or reconnect power.
12. Perform steps under "Service Test Mode",
page 6, to verify repair.
ELECTRIC DRYER (Canadian Installations):
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the top right
corner of the back of the dryer. See figure 3.
3. Access the machine electronics without
disconnecting any wiring to the ACU.
Terminal Block
L1
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