Toyota ZZT230 series Repair Manual page 37

IN-32
1
Fig.
Sensor
1
1
8£4063
Fig. 2
8 ......
Fi g .
3
Sensor
INTRODUCTION
-
Prepare a test male terminal and insert it in the female ter-
(d)
NOTI C E: minal, then pull it out.
When testi n g a gol d -pl a ted femal e termi n al , al w ays
gol d -pl a t e d mal e termi n al .
HINT:
When the test terminal is pulled out more easily than others,
there may be poor contact in that section.
CHECK OPEN CI R CUI T
6.
ECU
For the open circuit in the wire harness in Fig. 1 , perform �(a)
Continuity Check" or "(b) Voltage Check" to locate the section.
2
Z\1004
(a) Check the continuity.
(1 ) Disconnect connectors "A" and "C" and measure
the resistance between them.
ECU
In the case of Fig. 2,
Between terminal 1 of connector "Nand terminal 1
of connector "C"
Between terminal 2 of connector �A" and terminal 2
Z17005
of connector "C"
�
Therefore, it is found out that there is an open circuit
between terminal 1 of connector "A" and terminal 1
of connector "C".
Disconnect connector "B" and measure the resis­
{2)
tance between the connectors.
ECU
In the case of Fig.
Between terminal 1 of connector "N and terminal 1
of connector "81"
Between terminal
�=
1 of connector "C"
Therefore, it is found out that there is an open circuit
between terminal 1 of connector "82" and terminal
1 of connector "C".
HOW TO TROUBLESHOOT ECU CONTROLLED
SY
TEMS
--7
No continuity {open)
--7
Continuity
3,
--7
1 Continuity
of connector "82" and terminal
--7
No continuity {open)
a
use