Subaru Impreza 2002 Service Manual page 497

ABS
C: INSPECTION
Step
1 CHECK SUBARU SELECT MONITOR.
2 CHECK LATERAL G SENSOR.
1)Turn the ignition switch to OFF.
2)Remove the lateral G sensor from vehicle.
3)Connect the connector to lateral G sensor.
4)Turn the ignition switch to ON.
5)Measure the voltage between lateral G sen-
sor connector terminals.
Connector & terminal:
(B257) No. 2 (+) — No. 3 ( − − − − )
3 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal:
(B257) No. 2 (+) — No. 3 ( − − − − )
4 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal:
(B257) No. 2 (+) — No. 3 ( − − − − )
5 CHECK LATERAL G SENSOR.
1)Turn the ignition switch to OFF.
2)Connect the select monitor connector to data
link connector.
3)Turn the select monitor into {BRAKE CON-
TROL} mode.
4)Set the display in the {Current Data Display
& Save} mode.
5)Read the lateral G sensor output voltage.
6 CHECK LATERAL G SENSOR.
1)Remove the console box.
2)Remove the lateral G sensor from vehicle.
(Do not disconnect the connector.)
3)Read the select monitor display.
7 CHECK LATERAL G SENSOR.
Read the select monitor display.
LATERAL G SENSOR
Check
Do you have a SUBARU
SELECT MONITOR?
Is the voltage 2.5±0.2 V when
lateral G sensor is horizontal?
Is the voltage 3.5±0.2 V when
lateral G sensor is inclined for-
wards to 90°?
Is the voltage 1.5±0.2 V when
lateral G sensor is inclined
backwards to 90°?
Is the indicated reading
2.5±0.2 V when the vehicle is
in horizontal position?
Is the indicated reading
3.5±0.2 V when lateral G sen-
sor is inclined forwards to 90°?
Is the indicated reading
1.5±0.2 V when lateral G sen-
sor is inclined backwards to
90°?
ABS-6
Yes
Go to step 5. Go to step 2.
Go to step 3. Replace the lateral
G sensor.
Go to step 4. Replace the lateral
G sensor.
Lateral G sensor is Replace the lateral
normal. G sensor.
Go to step 6. Replace the lateral
G sensor.
Go to step 7. Replace the lateral
G sensor.
Lateral G sensor is Replace the lateral
normal. G sensor.
No