Suzuki GRAND VITARA JB416, Service Manual

Page: 224 / 474

4E-1 ABS:
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: ”.
• Diagnostic information stored in ABS (ESP
®
) control
module memory can be cleared as well as checked by
using SUZUKI scan tool. Before using scan tool, read
its Operator’s (Instruction) Manual carefully to have
good understanding as to what functions are available
and how to use it.
• 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 “Precaution for CAN Communication
System: in Section 00 in related manual” 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 (ESP
®
) 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.
• When disconnecting ESP
®
hydraulic unit / control
module connector (1), pull up lock lever (2) of
connector.
When connecting, set the connector on ESP
®
hydraulic unit / control module assembly and pull
down the lock lever (2) until it locks.
• Communication of ECM, TCM (for A/T model), BCM,
ABS (ESP
®
) control module (if equipped), 4WD
control module (if equipped), keyless start control
module (if equipped), steering angle sensor (if
equipped) and combination meter is established by
CAN (Controller Area Network).
Therefore, be sure to read “Precautions for Installing
Mobile Communication Equipment: in Section 00 in
related manual” before inspection and handle CAN
communication line.
Precautions in On-Vehicle Service
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When connector is connected to ABS (ESP
®
) hydraulic
unit / control module assembly, do not disconnect
connectors of sensors with ignition switch ON.
Otherwise, DTC will be set in ABS (ESP
®
) control
module.
Precautions in Hydraulic Unit Operation Check
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ABS (ESP
®
) hydraulic unit / control module assembly
function is checked by correct wheel lock / release
condition when brake pressure is pressurized /
depressurized using SUZUKI scan tool. The hydraulic
unit operation check referring to “Hydraulic Unit
Operation Check: ” should be performed to confirm the
correct brake pipe connection in the following cases.
• ABS (ESP
®
) hydraulic unit / control module assembly
was replaced.
• Brake pipe and/or hose were replaced.
[A]: Disconnect C: Pull down to disconnect
[B]: Connect D: Pull up to connect
2
1
C
D
[A] [B]
I4RH01450001-01
A: Disconnect C: Pull up to disconnect
B: Connect D: Pull down to connect
2
1
[A] [B]
C
D
I6JB01450001-02