Page 36 - Workshop Manual - Aumark (BJ1051)

01-30
Introduction-How to Troubleshoot the Vehicle

(c) Voltage check
• When a circuit is energized, you
can determine if its loop is
open-circuited by checking its
sensor voltage.
Take this circuit as an example. All
connectors are still connected.
Sequentially measure voltages to ground
of pins 1 of connectors Aand B at 5V
output pin of the control module
respectively.
• voltages to ground of pins 1 of
connectorsC
If the measurement results are as
follows:
5 V: voltage to ground of pin 1 of
connector A
01 5 V: voltage to ground of pin 1 of
connector B
0 V: voltage to ground of pin 1 of
connector C
Then you can judge that there is an open
circuit between pins 1 of connectors B
and C.
3. Short-circuit check
(a) A harness ground short circuit is shown
Short circuit in the left figure. In step (b), continuity
sensor
between it and ground is checked in
order to locate short circuit.

Page 36