Suzuki GRAND VITARA JB416, Service Manual

Page: 469 / 474

Keyless Start System: 10E-13
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC referring to “DTC Clearance: in related manual”.
2) Turn ignition key knob by pushing ignition key knob.
3) Check DTC referring to “DTC Check: ”.
Troubleshooting
DTC detecting condition Trouble area
Keyless start control module cannot receive data
sent by CAN from BCM • CAN communication circuit
• Keyless start control module
• BCM
Step Action Yes No
1 Was “Keyless Start System Check” performed? Go to Step 2. Go to “Keyless Start
System Check: in
related manual”.
2 DTC check of keyless start control module
Is DTC No. 33 detected?
Go to “DTC No. 33:
Control Module
Communication Bus
Off: ”. Go to Step 3.
3 DTC check of BCM
1) Check BCM for DTC referring to “DTC Check: in
Section 10B in related manual”
Is DTC U1073, DTC U1100 or DTC U1101 detected?
Go to applicable DTC
diag flow. Go to Step 4.
4 CAN communication circuit check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Disconnect connectors from BCM and keyless start
control module.
3) Check CAN communication circuit between BCM and
keyless start control module for open, short and high
resistance.
Is each CAN communication circuit in good condition?
Go to Step 5. Repair circuit.
5 CAN communication circuit check
1) Disconnect connectors of all control modules
communicating by means of CAN.
2) Check CAN communication circuit between control
modules other than Step 4 for open, short and high
resistance.
Is each CAN communication circuit in good condition?
Go to Step 6. Repair circuit.
6 DTC check of ECM
1) Connect connectors of disconnected control modules
communicating by means of CAN.
2) Check ECM for DTC.
Is DTC P1678 detected?
Check BCM power and
ground circuit. If circuit
is OK, substitute a
known-good BCM and
recheck. Go to Step 7.