Suzuki SX4 Service Manual page 1651

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Description
When the ignition knob switch is pushed, the key indicator light lights up in blue if you carry the remote controller
registered in the keyless start control module and it lights in red if you carry the remote controller which has not been
registered in the keyless start control module or if you carry no remote controller.
Troubleshooting
Step
1
Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lights in combination meter other than key
indicator light light up?
2
Keyless start control module power and ground circuit
check
1) Check keyless start control module power and ground
circuit for condition referring to "Keyless Start Control
Module Power and Ground Circuit Check".
Is it in good condition?
3
Steering lock unit ignition knob switch check
1) Check ignition knob switch of steering lock unit for
operation referring to "Steering Lock Unit Inspection".
Is it in good condition?
4
Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from keyless start control
module, steering lock unit and combination meter.
3) Check for open, short and high resistance in following
circuits.
• Ignition knob switch signal circuit
• Keyless start control module and combination meter
CAN communication circuit
Is each circuit in good condition?
5
Keyless start system operation check
1) With remote controller of which ID code is registered in
keyless start control module carried with you, try to turn
ignition knob switch.
Can it be turned to any position other than "LOCK" position?
Action
Keyless Start System:
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Replace combination
meter.
10E-24
No
Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
Repair circuit.
Replace steering lock
unit.
Repair circuit.
Substitute a known-
good keyless start
control module and
recheck.

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