Subaru IMPREZA GD 2007 Series Manual page 3075

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
MANUAL TRANSMISSION AND DIFFERENTIAL (DIAGNOSTICS)
Step
1 CHECK YAW RATE & LATERAL G SENSOR
POWER SUPPLY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the yaw rate
& lateral G sensor.
3) Turn the ignition switch to ON. (engine OFF)
4) Measure the voltage between yaw rate &
lateral G sensor harness connector and chassis
ground.
Connector & terminal
(B230) No. 3 (+) — Chassis ground (–):
2 POWER OUTPUT CHECK OF THE DRIVER'S
CONTROL CENTER DIFFERENTIAL CON-
TROL MODULE.
Measure the voltage between the driver's con-
trol center differential control module connector
and chassis ground.
Connector & terminal
(B380) No. 22 (+) — Chassis ground (–):
3 CHECK DRIVER'S CONTROL CENTER DIF-
FERENTIAL CONTROL MODULE POWER
SUPPLY VOLTAGE.
Measure the voltage between the driver's con-
trol center differential control module harness
connector and chassis ground.
Connector & terminal
(B381) No. 5 (+) — Chassis ground (–):
(B381) No. 6 (+) — Chassis ground (–):
4 CHECK THE YAW RATE & LATERAL G SEN-
SOR GROUND CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of the driver's
control center differential control module.
3) Measure resistance between the harness
connectors of the driver's control center differ-
ential control module and yaw rate & lateral G
sensor.
Connector & terminal
(B380) No. 11 — (B230) No. 6:
5 CHECK THE YAW RATE & LATERAL G SEN-
SOR GROUND CIRCUIT.
Measure the resistance between the driver's
control center differential control module con-
nector and chassis ground.
Connector & terminal
(B380) No. 11 — Chassis ground:
6 CHECK HARNESS BETWEEN DRIVER'S
CONTROL CENTER DIFFERENTIAL CON-
TROL MODULE AND YAW RATE & LATER-
AL G SENSOR.
Measure resistance between the harness con-
nectors of the driver's control center differential
control module and yaw rate & lateral G sensor.
Connector & terminal
(B380) No. 1 — (B230) No. 5:
Check
Is the voltage 12 V or more?
Is the voltage 12 V or more?
Is the voltage 12 V or more?
Is the resistance less than 1 Ω? Go to step 5.
Is the resistance 1 MΩ or
more?
Is the resistance less than 1 Ω? Go to step 7.
6MT(diag)-40
Yes No
Go to step 4. Go to step 2.
Go to step 3.
Repair the open or
short circuit
between the
driver's control
center differential
control module and
yaw rate & lateral
G sensor.
Repair the poor Check the harness
contact. connectors
between the
driver's control
center differential
control module
power supply cir-
cuit, battery, and
driver's control
center differential
control module,
and replace or
charge the battery.
Repair the open
circuit of the har-
ness between the
driver's control
center differential
control module and
yaw rate & lateral
G sensor.
Go to step 6.
Repair the short
circuit of the har-
ness between the
driver's control
center differential
control module and
yaw rate & lateral
G sensor.
Repair the open
circuit of the har-
ness between the
driver's control
center differential
control module and
yaw rate & lateral
G sensor.