Keyless Start System Symptom Diagnosis - Suzuki SX4 Service Manual

Keyless Start System Symptom Diagnosis

Door Lock Function of Keyless Start System
NOTE
Before performing trouble diagnosis procedure for door lock function of keyless start system, check
that power door lock system operates properly referring to "Power Door Lock System Operation
Inspection in Section 9F". If power door lock system does not operate properly, go to "Power Door
Lock System Symptom Diagnosis in Section 9F".
Condition
All doors can not be
locked / unlocked by all of
door request switches
All doors can not be
locked / unlocked by any
one of door request
switch
Possible cause
Circuit fuse(s) blown
Remote controller battery dead
Remote controller faulty
Wiring or grounding faulty
Antennas or keyless start control
module faulty
BCM faulty
Request switch faulty
Wiring or grounding faulty
Antennas or keyless start control
module faulty
BCM faulty
Keyless Start System:
Correction / Reference Item
Replace fuse(s) and check for short circuit.
Replace battery.
Check remote controller for operation referring
to "Remote Controller Inspection".
Repair circuit.
Check input and output signals of keyless start
control module referring to "Inspection of
Keyless Start Control Module and Its Circuits".
Check input and output signal of BCM referring
to "Inspection of BCM and Its Circuits in
Section 10B".
Check request switch for operation referring to
"Front Door (Driver and Passenger Side), Rear
End Door / Trunk Lid Request Switch
Inspection".
Repair circuit.
Check input and output signals of keyless start
control module referring to "Inspection of
Keyless Start Control Module and Its Circuits".
Check input and output signal of BCM referring
to "Inspection of BCM and Its Circuits in
Section 10B".
10E-14
S7RW0AA504010