Subaru B9 TRIBECA WX 2007 Manual page 289

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Step
1 CHECK IGNITION SWITCH CIRCUIT
1) Turn the ignition switch to OFF.
2) Disconnect the ECM harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B135) No. 19 (+) — Chassis ground (–):
F: DTC 21
Malfunction of the cruise control command switch.
Refer to DTC 11 for diagnostic procedure.
<Ref. to CC(diag)-15, DTC 11, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
G: DTC 22
DIAGNOSIS:
Open or short circuit in vehicle speed sensor system.
TROUBLE SYMPTOM:
Cruise control cannot be set. (Cancelled immediately.)
Step
1 CHECK ABS WARNING LIGHT.
1) Turn the ignition switch to ON.
2) After the initial operation of combination
meter is completed, check if the VDC warning
light continues to illuminate.
2 CHECK LAN COMMUNICATION CIRCUIT
ERROR DISPLAY
Check if the communication error is displayed
on the odo/trip meter in combination meter.
Check
Is the voltage 10 V or more?
Check
Does the VDC warning light
continue to illuminate?
Is the error code "Er xx" dis-
played on odo/trip meter?
CC(diag)-22
Yes No
Check poor con- • Check fuse No.
tact of ECM con- 12 (in fuse & relay
nector. box).
• Check the har-
ness for open or
short circuit
between ignition
switch and ECM.
Yes No
Check the Go to step 2.
VDCCM. <Ref. to
VDC(diag)-2,
Basic Diagnostic
Procedure.>
Check the LAN Replace the ECM.
communication cir- <Ref. to
cuit. <Ref. to FU(H6DO)-33,
LAN(diag)-2, Basic Engine Control
Diagnostic Proce- Module (ECM).>
dure.>