Dtc B1718: Steering Lock Unit Communication Error - Suzuki Grand Vitara 2011 Manual

DTC B1718: Steering Lock Unit Communication Error

Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: For Diesel Engine Model".
Circuit Description
When the verification code in the ECM is registered in immobilizer control system, the ID code is registered in both
ECM and keyless start control module at the same time. This DTC is detected only in case that the ID code cannot be
registered in both ECM and keyless start control module when the verification code in the ECM is registered in
immobilizer control system.
NOTE
• Troubleshoot DTC B1716 first if both DTC B1716 and B1718 are detected at the same time.
• After replacing ECM, be sure to perform "Procedure after ECM Replacement: For Diesel Engine
Model". After replacing the keyless start control module, be sure to perform "Procedure after ECM
Replacement: For Diesel Engine Model".
Detecting Condition and Trouble Area
DTC detecting Condition
• While registering the verification code in the ECM in
immobilizer control system, the keyless start control
module sent a signal to ECM indicating that the ID code
could not be registered.
• The ID code could not be registered in the keyless start
control module or ECM.
Troubleshooting
Step
1 Was "Immobilizer Control System Check" performed?
2 Registration of ECM
1) Register ECM to immobilizer control system referring to
"Procedure after ECM Replacement: For Diesel Engine
Model".
Was registration of ECM to immobilizer control system
completed?
3 DTC check
Is DTC other than B1718 detected?
4 DTC check for keyless start control module
1) Check Keyless start control module for DTC referring to
"DTC Check in Section 10E".
Is DTC detected?
Immobilizer Control System: For Diesel Engine Model 10C-52
Action
Trouble Area
• Wire circuits between steering lock unit and keyless
start control module faulty
• Steering lock unit
• CAN communication circuit
• Steering angle sensor (ESP
• 4WD control module
• Keyless start control module (if equipped)
®
• ABS/ESP control module
• Combination meter
• BCM
• ECM
Yes
Go to Step 2.
Recheck ECM for DTC.
If DTC B1718 is still
detected, go to Step 3.
Go to applicable DTC
diag. flow.
Go to applicable DTC
diag. flow.
S6JB0AA324033
® model)
No
Go to "Immobilizer
Control System Check:
For Diesel Engine
Model".
Go to Step 3.
Go to Step 4.
Go to Step 5.