4AT(diag)-36
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
33
CHECK COMBINATION METER.
Check the “N” range indicator light. <Ref. to IDI-
4, INSPECTION, Combination Meter System.>
Is the “N” range indicator light
OK?
Go to step
42
.
Replace the com-
bination meter
assembly. <Ref. to
IDI-16, Combina-
tion Meter.>
34
CHECK HARNESS CONNECTOR BETWEEN
TCM AND INHIBITOR SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
inhibitor switch.
3) Measure the resistance of harness between
TCM connector and chassis ground.
Connector & terminal
(B55) No. 11 — Chassis ground:
Is the resistance 1 M
:
or
more?
Go to step
42
.
Repair the ground
short circuit in “N”
range circuit.
35
CHECK HARNESS CONNECTOR BETWEEN
TCM AND INHIBITOR SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM and
inhibitor switch.
3) Measure the resistance of the harness
between TCM and inhibitor switch connector.
Connector & terminal
(B55) No. 10 — (T7) No. 4:
Is the resistance less than 1
:
? Go to step
36
.
Repair the open
circuit of harness
between TCM and
inhibitor switch
connector, and
poor contact of the
connector.
36
CHECK INPUT SIGNAL FOR TCM.
1) Turn the ignition switch to OFF.
2) Connect the connector to TCM and inhibitor
switch.
3) Turn the ignition switch to ON.
4) Set the select lever to the “D” range.
5) Measure the voltage between TCM and
chassis ground.
Connector & terminal
(B55) No. 10 (+) — Chassis ground (–):
Is the voltage less than 1 V?
Go to step
37
.
Go to step
42
.
37
CHECK INPUT SIGNAL FOR TCM.
1) Shift the select lever to other than “D” range.
2) Measure the voltage between TCM and
chassis ground.
Connector & terminal
(B55) No. 10 (+) — Chassis ground (–):
Is the voltage 8 V or more?
Go to step
42
.
Replace the TCM.
<Ref. to 4AT-63,
Transmission Con-
trol Module
(TCM).>
38
CHECK BODY INTEGRATED UNIT.
Read the data of “Shift Position” using Subaru
Select Monitor. <Ref. to LAN(diag)-15, OPERA-
TION, Subaru Select Monitor.>
Is “4” displayed?
Go to step
39
.
Check body inte-
grated unit.
39
CHECK BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
Is DTC of CAN communication
displayed?
Perform the diag-
nosis according to
DTC.
Go to step
40
.
40
CHECK COMBINATION METER.
Check the “D” range indicator light. <Ref. to IDI-
4, INSPECTION, Combination Meter System.>
Is the “D” range indicator light
OK?
Go to step
42
.
Replace the com-
bination meter
assembly. <Ref. to
IDI-16, Combina-
tion Meter.>
Step
Check
Yes
No
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