Suzuki Wagon R Manual page 2741

1A-4 HEATER AND VENTILATION
On-Board Diagnostic System (Z13DT Engine Model)
NOTE:
• The on-board diagnostic system is available only for Z13DT engine model with the supplementary
heater system.
• The SUZUKI scan tool cannot be used.
For Z13DT Engine Model with the supplementary heater system, the on-board diagnostic system is available.
The supplementary heater controller detects malfunctions related to the supplementary heater system. When
the controller detects some malfunction, the diagnostic information as diagnostic trouble code (DTC) is stored in
the memory of the controller. By performing the DTC check procedure, the diagnostic information can be known.
For the procedure, refer to "Diagnostic Trouble Code (DTC) Check (Z13DT Engine Model)" and "Diagnostic
Trouble Code (DTC) Table (Z13DT Engine Model)" in this section.