Electric Door Lock Control ECU Output Voltage
Parts inspection
Door control or Door control computer with receiver
-
Using electrical tester with mini test leads, inspect
voltage and continuity on the following terminals.
Carry out “Disconnected connector” first.
-
Probable
Terminal Number
Item
Inspection Condition
Standard
10~14V
Cause
Area
Tester + ? Tester -
1 ? body earth
V
Always
Door control switch (manual
operation)
No continuity -
Yes continuity
OFF - LOCK
5 ? body earth
Continuity
Using key plate, door key
cylinder
Yes continuity -
LOCK and hold - Other than No continuity
that
Vehicle
Door control switch (manual
No continuity - side
operation)
Yes continuity
OFF - Unlock
6 ? body earth
Continuity
Using key plate, door key
cylinder
Yes continuity -
No continuity
UNLOCK and hold -
Other than that
7 ? 8
Continuity Always
Continuity Always
Yes continuity
Yes continuity
10 ? body earth
Door control switch (manual
0V - 10~14V -
0V
7 ? body earth
8 ? body earth
V *1
V *1
operation)
Control
relay or
control
OFF - LOCK
Door control switch (manual
operation)
0V - 10~14V -
0V
computer
OFF - UNLOCK
*1: Use bar graph indication to check output voltage.
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