6MT(diag)-27
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
MANUAL TRANSMISSION AND DIFFERENTIAL (DIAGNOSTICS)
12
CHECK DCCD RELAY.
Connect the battery positive lead to terminal
No. 27 and the negative lead to terminal No. 28,
then measure the resistance between DCCD
relay terminals.
Connector & terminal
(B220) No. 25 — No. 26:
Is the resistance less than 1 Ω? Go to step
13.
Replace the DCCD
relay.
13
CHECK DCCD CONTROL MODULE RELAY
DRIVE CIRCUIT.
1) Connect all connectors.
2) Turn the ignition switch to ON.
3) Measure the voltage between DCCD con-
trol module and chassis ground.
Connector & terminal
(B380) No. 7 (+) — Chassis ground (–):
Is the voltage less than 1 V?
Go to step
14.
Go to step
17.
14
CHECK IGNITION POWER SUPPLY CIRCUIT
OF DCCD CONTROL MODULE.
Measure the voltage between DCCD control
module and chassis ground.
Connector & terminal
(B380) No. 13 (+) — Chassis ground (–):
(B380) No. 14 (+) — Chassis ground (–):
Is the voltage 8 V or more?
Go to step
15.
Go to step
17.
15
CHECK CENTER DIFFERENTIAL.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON.
4) Run the Subaru Select Monitor.
5) Press the mode change switch to enter the
manual mode.
6) Release the parking brake.
7) Press the C.DIFF +/– switch to enter the
lock position.
8) Read the data of «C-Diff. Indicate Current»
and «C-Diff. Real Current» using Subaru Select
Monitor.
Are «C-Diff. Indicate Current»
and «C-Diff. Real Current» both
approximately 3.6 — 4.0 A?
Go to step
16.
Go to step
17.
16
CHECK CENTER DIFFERENTIAL.
1) Using Subaru Select Monitor, operate the
C.DIFF +/– switch so that «C-Diff. Indicate Cur-
rent» becomes 1.6A.
2) Read the data of «C-Diff. Real Current»
using Subaru Select Monitor.
Is «C-Diff. Real Current» about
the same as «C-Diff. Indicate
Current»?
Go to step
18.
Go to step
17.
17
CHECK POOR CONTACT OF HARNESS
CONNECTORS.
Is there poor contact of the har-
ness connector?
Repair the poor
contact.
Go to step
18.
18
CHECK DTC.
1) Clear the memory. <Ref. to 6MT(diag)-13,
Clear Memory Mode.>
2) Read the DTC using the Select Monitor.
<Ref. to 6MT(diag)-12, Read Diagnostic Trou-
ble Code (DTC).>
Is P1875 displayed?
Check the poor
contact.
Go to step
19.
19
CHECK DTC.
Are DTCs other than P1875
displayed?
Perform the diag-
nosis according to
DTC.
The center differ-
ential circuit is cur-
rently operating
properly.
Step
Check
Yes
No