Injection Warning Light Remains On After Engine Start - Suzuki GRAND VITARA 2005 Service Manual

10C-9 Immobilizer Control System:

Injection Warning Light Remains ON after Engine Start

Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: ".
Circuit Description
When ECM has any DTC(s), injection warning light remains ON after engine starts.
Troubleshooting
Check ECM for DTC(s) referring to "DTC Check: in Section 1A" and then, go to applicable DTC diag. flow.
DTC B1701: Transponder Code Error 1/DTC B1710: Transponder Code Error 3
Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: ".
Detecting Condition and Trouble Area
Detecting Condition
Inconsistent transponder data from transponder while
registering ignition key.
Troubleshooting
Step
1 Diagnostic Trouble Code (DTC) Check
1) Check ICM for DTC referring to "Diagnostic Trouble
Code (DTC) Check: ".
Is any DTC other than B1701 and B1710 detected?
2 Registration of the spare ignition key
1) Register the spare ignition key referring to "Registration
of the Ignition Key: ".
Is ignition key registered?
DTC B1702: ECM Communication Error 1
Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: ".
Detecting Condition and Trouble Area
Detecting Condition
Communication error between ICM and ECM or battery
voltage is lower than specified value
NOTE
• When ICM detects DTC B1702 although engine has started, battery may be defective. In such case,
check battery, referring to "Battery Inspection: in Section 1J". Also, recharge or replace battery if
necessary. After that, recheck DTC.
• When DTC B1702 and B1709 are detected at the same time, CAN communication circuit may be
faulty. Check if DTC related to CAN failure is detected by ECM, BCM, ABS control module and/or
®
ESP control module. If it is detected, perform applicable DTC diag. flow.
Action
Trouble Area
• Transponder in ignition key faulty
• ICM faulty
Yes
Go to corresponding
flowchart for DTC other
than B1701 and B1710.
Replace ignition key
which cannot be
registered.
Trouble Area
• Battery voltage is low
• Related fuse(s) blown
• ICM power and ground circuit faulty
• ECM power and ground circuit faulty
• CAN communication circuit faulty
• ICM faulty
• ECM faulty
S5JB0BA304007
S5JB0BA304008
No
Go to Step 2.
Substitute a known-
good ICM and recheck.
S5JB0BA304019