Suzuki sq-416-420-625 Service Manual page 363

5E1-22 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
INSPECTION
STEP
1 Is G sensor installed floor securely?
2 1) Ignition switch OFF.
2) Remove G sensor with bracket.
3) Check for proper connection to G sensor.
4) If OK then check G sensor referring to item
INSPECTION of G sensor.
Is it in good condition?
3 1) Disconnect connectors from ABS hydraulic unit/
control module assembly (See Fig. 1) and G sensor.
2) Check for proper connection to ABS control module
at terminals "A14" and "A4".
3) If OK, then turn ignition switch ON and measure
voltage between "B/W" terminal of sensor
connector and body ground.
Is it 10 – 14 V?
4 Measure voltage between "O/W" terminal of sensor
connector and body ground.
Is it 0 V?
5 1) Ignition switch OFF.
2) Check that "O/W" circuit is free from open
or short to ground and "O/G" circuit.
Is it in good condition? (See Fig. 2)
Fig. 1
1. ABS hydraulic
unit / control
module connector
ACTION
Fig. 2
YES
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
"O/G" circuit open.
If circuit is OK, substi-
tute a known-good
ABS hydraulic
unit/control module
assembly.
NO
Tighten sensor or
bracket screw
securely. If not,
using new screw.
Replace G sensor.
"B/W" circuit open.
"O/W" circuit
shorted to power
circuit.
"O/W" circuit open
or shorted to
ground or "O/G"
circuit.