Suzuki 2006 SX4 Service Manual page 1468

10E-24 Keyless Start System:
DTC Detecting Condition and Trouble Area
DTC detecting condition
No communication is available between keyless start
control module and steering lock unit.
DTC Confirmation Procedure
1) Clear DTC referring to "DTC Clearance".
2) Turn ignition knob switch pushing ignition knob switch.
3) Check DTC referring to "DTC Check".
DTC Troubleshooting
Step
1 Was "Keyless Start System Check" performed?
2 Steering lock unit circuit check
1) Disconnect connector from keyless start control module.
2) Check for proper connection to "Steering lock unit power
supply", "Steering lock unit signal" and "Steering lock unit
ground" terminals of keyless start control module
connector.
3) If OK, check for open, short and high resistance in
following circuits.
• Steering lock unit power supply circuit
• Steering lock unit signal circuit
• Steering lock unit ground circuit
Is each circuit in good condition?
3 Steering lock unit power supply voltage check
1) Connect connector to keyless start control module.
2) Measure voltage between "Steering lock unit power
supply" terminal of steering lock unit connector and
vehicle body ground.
Is voltage 4 – 6 V?
• Steering lock unit and its circuit
• Keyless start control module
Action
Trouble area
Yes
Go to Step 2.
Go to Step 3.
Replace steering lock
unit.
No
Go to "Keyless Start
System Check".
Repair circuit.
Substitute a known-
good keyless start
control module and
recheck.