Subaru Legacy 2005 Service Manual page 2298

Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
9 CHECK HARNESS CONNECTOR BETWEEN
TCM AND MANUAL MODE SWITCH.
Measure the resistance of harness between
manual mode switch connector and chassis
ground.
Connector & terminal
(B116) No. 5 — Chassis ground:
10 CHECK INPUT SIGNAL TO BODY INTE-
GRATED MODULE.
1) Connect all the connectors.
2) Turn the ignition switch to ON (engine
OFF).
3) Check the signal voltage for body inte-
grated module.
Connector & terminal
(B281) No. 15 (+) — Chassis ground (
11 CHECK INPUT SIGNAL TO BODY INTE-
GRATED MODULE.
1) Shift and hold the select lever to up side.
2) Check the signal voltage for body inte-
grated module.
Connector & terminal
(B281) No. 15 (+) — Chassis ground (
12 CHECK BODY INTEGRATED MODULE.
1) Turn the ignition switch to ON.
2) Shift and hold the select lever to down side.
3) Read the TIP UP SW data of body inte-
grated module using Subaru Select Monitor.
<Ref. to LAN(diag)-14, OPERATION, Subaru
Select Monitor.>
13 CHECK BODY INTEGRATED MODULE.
Check DTC of body integrated module.
14 CHECK MANUAL MODE SWITCH GROUND
CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from manual
mode switch.
3) Measure the resistance of harness
between manual mode switch connector and
chassis ground.
Connector & terminal
(B116) No. 10 (+) — Chassis ground:
15 CHECK MANUAL MODE SWITCH.
Measure the resistance between manual mode
switch terminals.
Connector & terminal
(B116) No. 10 — No. 9:
16 CHECK MANUAL MODE SWITCH.
1) Shift and hold the select lever to down side.
2) Measure the resistance between manual
mode switch terminals.
Connector & terminal
(B116) No. 10 — No. 9:
Check
Is the resistance more than 1
MΩ?
Is the voltage 1.5 — 8 V?
−
):
Is the voltage less than 1 V?
−
):
Is ON displayed?
Is DTC of CAN communication
displayed?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
4AT(diag)-126
Yes
Go to step 10. Repair the short
circuit of harness
between manual
mode switch con-
nector and TCM
connector.
Go to step 11. Replace the body
integrated module.
Go to step 19. Replace the body
integrated module.
Go to step 13. Go to step 14.
Perform the diag- Check the TCM.
nosis according to
DTC.
Go to step 15. Repair the open
circuit of harness
between manual
mode switch and
chassis ground.
Go to step 16. Replace the guide
plate assembly.
Go to step 17. Replace the guide
plate assembly.
No