DTC Check
DTC CheckUsing SUZUKI Scan Tool
1. Turn ignition switch to OFF position.
2. Connect SUZUKI scan tool to data link connector (DLC) (1) located on underside of instrument panel at driver's seat side.
Special Tool
(A): SUZUKI scan tool
3. Light over sunload sensor vertically with an incandescent light of approximately 100 W apart from about 100 mm (3.94 in.).
NOTE: If sunload sensor is not lighted over with an incandescent light, DTC B1504 is detected even though there is not any malfunction.
4. Turn ignition switch to ON position.
5. Read DTC displayed on SUZUKI scan tool.
NOTE: To know how to use SUZUKI scan tool, refer to operator's manual for SUZUKI scan tool.
6. After completing the check, turn ignition switch to OFF position and disconnect SUZUKI scan tool from data link connector (DLC).
Not Using SUZUKI Scan Tool
NOTE: In case of malfunction of temperature selector, blower speed selector and air flow selector, DTC can not be checked by the following procedure. Use SUZUKI scan tool for DTC check.
1. Light over sunload sensor vertically with an incandescent light of approximately 100 W apart from about 100 mm (3.94 in.).
NOTE: If sunload sensor is not lighted over with an incandescent light, DTC of sunload sensor is detected as current DTC even though there is not any malfunction.
2. Set the following selectors to specified positions below respectively with ignition switch off position.
^ Temperature selector (1) is maximum cool position
^ Blower speed selector (2) is OFF position
^ Air flow selector (3) is AUTO position
3. While pressing A/C switch (4) and air intake selector (5) simultaneously, turn ignition switch to ON position.
4. Wait for about 5 seconds (start of diagnosis).
5. Read flashing pattern of "FRE" (6) and "REC" (7) indicator lights which represents DTC and write it down.
NOTE:
^ When 2 or more current DTCs are detected, only DTC having the highest priority is indicated. For priority, refer to DTC Table:Automatic Type. Therefore, after troubleshooting the malfunction, DTC check has to be performed again to see if any other DTC(s) is detected. DTC Table
^ Pressing "A/C" switch alternates display of current DTC and history DTC. "A/C" indicator light (8) remains off when display is in current DTC mode and it lights up when display is in history DTC mode.
^ When a history DTC is indicated while 2 or more history DTCs are detected, it is possible to have other history DTC(s) stored in HVAC control module displayed by pressing the air intake selector.
Example: When inside air temperature sensor circuit malfunction (Open) is set.
Example: When VSS signal failure (Data error) is set
6. After completing above check, turn ignition switch to "OFF" position.