Suzuki 2006 SX4, Service Manual

Page: 570 / 1478

4E-22 ABS:
DTC C1033: Wheel Speed Sensor Deviation
S6RW0C4504016
Wiring Diagram
Refer to “Wiring Diagram” under “DTC C1021 / C1022 / C1025 / C1026 / C1031 / C1032 / C1035 / C1036: Wheel
Speed Sensor Circuit / Sensor or Encoder”.
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC Detecting Condition Trouble Area
• Three or more sensor signals seem to be effected by
temporary failure suspicion at the same time.
• One wheel or more are controlled by ABS for more than
specified time.
• Wheel speed sensor
• Wheel speed sensor circuit
• Wheel encoder
• ABS control module
• Tire (flat tire)
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 Check DTC for ABS
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ABS.
Is DTC C1021, C1022, C1025, C1026, C1031, C1032,
C1035 and/or C1036 detected together?
Go to “DTC C1021 /
C1022 / C1025 / C1026
/ C1031 / C1032 /
C1035 / C1036: Wheel
Speed Sensor Circuit /
Sensor or Encoder” and
recheck. Go to Step 3.
3 Check tire condition
1) Check that tire pressure is specifications.
Are they in good condition?
Go to Step 4. Replace tire or adjust
tire pressure and
recheck.
4 Wheel speed sensor circuit check
1) Disconnect ABS hydraulic unit / control module
connector and all wheel speed sensor connectors with
ignition switch turned OFF.
2) Check for proper connection to ABS hydraulic unit /
control module connector and terminals of wheel speed
sensor.
3) If OK then check all wheel speed sensors circuit for
open, short and high resistance.
Are wheel speed sensor circuits in good condition?
Go to Step 5. Repair circuit and
recheck.
5 Wheel speed sensor check
1) Inspection all wheel speed sensors referring to “Front
and Rear Wheel Speed Sensor Inspection”.
Are they in good condition?
Go to Step 6. Clean or replace.
6 Wheel speed sensor encoder check
1) Inspection all wheel speed sensor encoders referring to
“Front Wheel Speed Sensor Encoder On-Vehicle
Inspection” and “Rear Wheel Speed Sensor Encoder
On-Vehicle Inspection”.
Are they in good condition?
Go to Step 7. Clean or replace wheel
hub assembly.
7 Wheel speed sensor signal check
1) Inspection all wheel speed sensors referring to “Front
and Rear Wheel Speed Sensor On-Vehicle Inspection”.
Are they in good condition?
Substitute a known-
good wheel hub
assembly and recheck.
If DTC detected,
substitute a known-
good ABS hydraulic unit
/ control module and
recheck. Replace wheel speed
sensor and recheck.