4AT(diag)-41
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
7
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND ATF TEMPERATURE
SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Lift up the vehicle.
5) Drain the automatic transmission fluid.
CAUTION:
Do not drain ATF until it cools down.
6) Remove the oil pan, and disconnect the
control valve connector.
7) Measure the resistance of harness between
ATF temperature sensor and transmission con-
nector.
Connector & terminal
(T4) No. 11 — (AT2) No. 4:
Is the resistance less than 1
:? Go to step 8.
Repair the open
circuit of harness
between ATF tem-
perature sensor
and transmission
connector.
8
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND ATF TEMPERATURE
SENSOR.
Measure the resistance of harness between
ATF temperature sensor and transmission con-
nector.
Connector & terminal
(T4) No. 15 — (AT2) No. 9:
Is the resistance less than 1
:? Go to step 9.
Repair the open
circuit of harness
between ATF tem-
perature sensor
and transmission
connector.
9
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND ATF TEMPERATURE
SENSOR.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 11 — Transmission ground:
Is the resistance 1 M
: or
more?
Go to step 10.
Repair the short
circuit of harness
between ATF tem-
perature sensor
and transmission
connector.
10
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND ATF TEMPERATURE
SENSOR.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 15 — Transmission ground:
Is the resistance 1 M
: or
more?
Replace the con-
trol valve body.
<Ref. to 4AT-56,
Control Valve
Body.>
Repair the short
circuit of harness
between ATF tem-
perature sensor
and transmission
connector.
Step
Check
Yes
No