Suzuki 2006 SX4, Service Manual

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4E-14 ABS:
EBD Warning Light (Brake Warning Light) Comes ON Steady
S6RW0C4504010
Wiring Diagram
Referring to “Wiring Diagram” under “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Circuit Description
EBD warning lamp (brake warning lamp) is controlled by ABS control module and BCM through lamp driver module in
combination meter.
If EBD system is in good condition, ABS control module turns EBD warning lamp ON at the ignition switch ON, keeps
it ON for 2 seconds and then turns it OFF.
EBD warning lamp is turned ON continuously at the following conditions.
• EBD system is an abnormality
• Connector of ABS control module is disconnected
• Parking brake switch is ON
• Brake fluid level is lower than minimum level
The information of parking brake switch and brake fluid level are transmitted from BCM to lamp driver module in
combination meter through CAN communication line.
Troubleshooting
3 CAN communication line circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check for proper connection to CAN communication line
wire.
4) If OK then check CAN communication line circuit
between control modules for open, short and high
resistance.
Is each CAN communication line circuit in good condition?
Substitute a known-
good combination meter
and recheck. If warning
light remains ON,
substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck. Repair circuit and
recheck.
Step Action Yes No
Step Action Yes No
1 Parking brake and brake fluid level check
1) Make sure that:
• Parking brake is completely released.
• Brake fluid level is upper than the minimum level.
Are the check results OK?
Go to Step 2. Release parking brake
completely and/or
replenish brake fluid.
2 ABS warning light operation check
1) Turn ignition switch to ON position.
Does ABS warning light come on steady?
Perform “ABS Warning
Light Comes ON
Steady” previously
outlined. Go to Step 3.
3 Parking brake switch circuit and brake fluid level switch
circuit check
1) Release parking brake completely, and replenish brake
fluid.
2) Disconnect BCM connectors with ignition switch turned
OFF.
3) Measure resistance between each terminal of “E04-5”,
“L01-6” and vehicle body ground.
Are resistance
∞Ω
?
Go to Step 4. Check each applicable
circuit for short to
vehicle body ground. If
OK then check parking
brake switch and/or
brake fluid level switch.