Subaru 2009 IMPREZA Service Manual page 2381

ABS
8. G Sensor
A: REMOVAL
1) Disconnect the ground cable from the battery.
2) Remove the console box.
<Ref. to EI-48, REMOVAL, Console Box.>
3) Disconnect the connector from G sensor.
4) Remove the G sensor from the body.
CAUTION:
• Do not drop or bump the G sensor.
• The G sensor integrated with the bracket. Do
not disassemble.
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
Do not drop or bump the G sensor.
Tightening torque:
Refer to "COMPONENT" for tightening
torque. <Ref. to ABS-3, ABS WHEEL SPEED
SENSOR & G SENSOR, COMPONENT, Gen-
eral Description.>
C: INSPECTION
Step
1 CHECK G SENSOR.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Set the Subaru Select Monitor to the {Brake
Control System} mode.
4) Set the display in the {Current Data Display
& Save} mode.
5) Read the G sensor output value.
2 CHECK G SENSOR.
1) Remove the console box.
2) Remove the G sensor from vehicle. (Do not
disconnect the connector.)
3) Read the Subaru Select Monitor display.
3 CHECK G SENSOR.
Read the Subaru Select Monitor display.
G Sensor
ABS00463
Check
Is the value –1.2 — 1.2 m/s
when the vehicle is in horizontal
position?
Is the value 8.1 — 11.2 m/s
when G sensor is inclined for-
ward to 90°?
Is the value –8.1 — –11.2 m/s
when G sensor is inclined back-
ward 90°?
ABS-18
Yes
2
Go to step 2. Repair the harness
connector between
the G sensor and
ABSCM&H/U. Or
replace G sensor.
2
Go to step 3. Repair the harness
connector between
the G sensor and
ABSCM&H/U. Or
replace G sensor.
2
G sensor is nor- Repair the harness
mal. connector between
the G sensor and
ABSCM&H/U. Or
replace G sensor.
No