Suzuki Liana RH413, Service Manual

Page: 503 / 1302

ABS: 4E-1
Brakes
ABS
Precautions
Precautions in Diagnosing Troubles
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To ensure that the trouble diagnosis is done accurately
and smoothly, observe the following and follow “ABS
Check”.
• If the vehicles was operated in any of the following
ways, ABS warning lamp may light momentarily but
this does not indicate anything abnormal in ABS.
– The vehicle was driven with parking brake pulled.
– The vehicle was driven with brake dragging.
– The vehicle was stuck in mud, sand, etc.
– Wheel spin occurred while driving.
– Wheel(s) was rotated while the vehicle was jacked
up.
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• Be sure to use the trouble diagnosis procedure as
described in “ABS Check”. Failure to follow it may
result in incorrect diagnosis. (Some other diagnosis
trouble code may be stored by mistake in the memory
of ABS control module during inspection.)
• When disconnecting ABS hydraulic unit / control
module connector (1), pull down lock lever (2) of
connector.
When connecting, set the connector on ABS hydraulic
unit / control module assembly and pull up the lock
lever (2) until it locks.
• Inspect the vehicle for any mechanical conditions
related the brake system.
– Brake reservoir fluid level correct.
– Inspect master for fluid for contamination.
– Inspect brake master / modulator for leaks.
– Inspect brake components at all wheels.
– Verify no brake drag exists (brake switch
adjustment).
– Verify even brake apply (no pull or lead).
– Inspect for worn / damaged brake pads.
– Inspect for worn / damaged wheel bearings.
– Inspect wheel speed sensors / wiring.
– Inspect harness connectors / wheel speed sensor
rotors for damage.
– Inspect tires for tread depth / wear.
– Road test the vehicle to verify the complaint.
Precautions in On-Vehicle Service
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When connector is connected to ABS hydraulic unit /
control module assembly, do not disconnect connectors
of sensors with ignition switch ON. Then DTC will be set
in ABS control module.
[A]: Disconnect C: Pull down to disconnect
[B]: Connect D: Pull up to connect
2
1
C
D
[A]
[B]
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