Customer Care
20753 15 Volt Supply Low Voltage
Caused by: Problem with the controller’s internal 15V supply
for brake light circuit
.
1.
Verify that the brake relay is properly
plugged into the vehicle harness. If yes
proceed to step 2.
2.
Unplug relay from harness. Place
pos. probe of meter on the 85
terminal. Place neg. probe of meter
on 86 terminal. Verify 1-50 ohms
resistance. If not replace the relay.
(Shorted) If good, go to step 3.
3.
Place pos. probe of meter on the red
wire terminal of the relay harness. Place
neg. probe on the purple wire terminal.
Depress brake pedal. Should observe
12 – 15 VDC. If good, replace relay. If
bad go to step 4.
4.
Check continuity between the 86 terminal
on the harness and pin #22 (Purple wire) of
the controller
23 pin
connector 1st. Check
continuity between 85 terminal of harness
and pin #1 (Red wire) of the controller
23 pin
connector 2nd. If continuity is not found,
replace the harness. If a short is found
between 85 and 86 with the controller
23 pin
connector
unplugged, replace the harness.
If continuity is good in the harness;
Try a known
good controller if error is gone, warranty
controller. Error remains
,
reinstall controller and
contact Customer Care.
Relay
Fastener
Harness Plug
A
B
Page
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